Enardo 860 and 960 Series Spring-Loaded Pressure/Vacuum Relief Valve Owner's manual

Brand: Enardo

Model: 860 and 960 Series Spring-Loaded Pressure/Vacuum Relief Valve

Type: Owner's manual

Enardo 860 and 960 Series Spring-Loaded Pressure/Vacuum Relief Valve is designed to handle higher pressure settings than standard dead weight-loaded valves. Ideal for pipe-away or vent-to-atmosphere applications. The valve maintains a tight seal until system pressure or vacuum exceeds the set pressure, allowing vapors to pass through the valve orifice and relieve pressure buildup. Suitable for hazardous locations, available with carbon steel, stainless steel, or aluminum housings.

860 and 960 Series Spring-Loaded Pressure/

Vacuum Relief Valve (ATEX Approved)

Table of Contents

Introduction .................................................................. 1

Specifications .............................................................. 2

Product Identification and Marking .............................. 4

Principle of Operation .................................................. 4

Installation ................................................................... 5

Maintenance ................................................................ 7

Weight Information ....................................................10

Valve Repair .............................................................. 10

Parts Ordering ........................................................... 10

Parts List ................................................................... 11

WARNING

Failure to follow these instructions or

to properly install and maintain this

equipment could result in an explosion,

re and/or chemical contamination

causing property damage and personal

injury or death.

Enardo spring-loaded pressure/vacuum

relief valve must be installed, operated

and maintained in accordance with

federal, state and local codes, rules

and regulations, and Emerson Process

Management Regulator Technologies

Tulsa, LLC (Emerson) instructions.

Failure to correct trouble could result in

a hazardous condition. Call a qualied

service person to service the unit.

Installation, operation and maintenance

procedures performed by unqualied

person may result in improper adjustment

and unsafe operation. Either condition may

result in equipment damage or personal

injury. Only a qualied person shall install

or service the spring-loaded pressure/

vacuum relief valve.

Figure 1. Model 860 Spring-Loaded Pressure/

Vacuum Relief Valve

Figure 2. Model 960 Spring-Loaded Pressure/

Vacuum Relief Valve

Introduction

Scope of the Manual

This Instruction Manual provides instructions

for installation, maintenance and parts ordering

information for the 860 and 960 Series spring-loaded

pressure/vacuum relief valve (SL-PVRV).

Instruction Manual

D103813X012

October 2017

860 and 960 Series

North America Only

Specications

The Specications section on this page provides specications for the 860 and 960 Series spring-loaded

pressure/vacuum relief valve. Specication is stamped on the nameplate attached to the relief valve. Refer to

Product Identication and Marking section for the nameplate details.

Available Construction

See Figure 3

Inlet Connection Sizes

2 through 6 in. / 50 through 150 mm

Pressure Ranges

(1)(2)

0.5 to 15.0 psi

0.5 to 32.0 oz./sq. in.

1.0 to 55.0 in. w.c.

2.0 to 138 mbar

Vacuum Pressure Ranges

(1)(2)

0.5 to 15.0 psi

0.5 to 32.0 oz./sq. in.

1.0 to 55.0 in. w.c.

2.0 to 138 mbar

Construction Materials

Housing: Aluminum, Stainless steel or

Carbon steel

Seat / Pallet: Polyphenylene Sulde (PPS) or 316

Stainless steel (standard above 5 psi)

Pallet Seal: Buna-N, FEP Teon

or Viton

Hardware: Zinc plated carbon steel or

Stainless steel

Weights: Zinc plated carbon steel, Stainless steel

or Lead

Gaskets: Buna-N, Teon

or Viton

Certication

EN 13463-1

EN 13463-5

1. The pressure limits in this Instruction Manual and any applicable standard or code limitation should not be exceeded.

2. Pressure or vacuum setting has an increment of 0.5 psi, 0.5 oz./sq. in., 0.5 in. w.c. or 2.2 mbar.

Teon

and Viton

are marks owned by E. I. du Pont de Nemours and Company.

Figure 3. Pressure/Vacuum Relief Valve Model Number

MODEL 860 SPRING-LOADED PRESSURE/VACUUM RELIEF VALVE MODEL NUMBER

860 - X - - / -

MODEL 960 SPRING-LOADED PRESSURE/VACUUM RELIEF VALVE MODEL NUMBER

960 - - - / -

Inlet

Connection

Size

(2 through

6 in.)

Outlet

Connection

Size

(3 through

8 in.)

Housing

Material

1 = Aluminum

2 = Stainless

Steel

3 = Carbon

Steel

Pallet and Seat

Ring Material

1 = Advanced

Composite-

Polyphenylene

Sulde (PPS)

2 = 316 Stainless Steel

3 = Other

Pallet Seal

Material

1 = FEP Teon

2 = Buna-N

3 = Viton

4 = Other

Pressure Settings

p = psig

z = oz./sq. in.

n = in. w.c.

0.5 to 15.0 psi

(0.5 psi

increments)

0.5 to

32.0 oz./sq. in.

(0.5 oz./sq. in.

increments)

1.0 to

55.0 in. w.c.

(0.5 in. w.c.

increments)

Vacuum Settings

p = psig

z = oz./sq. in.

n = in. w.c.

0.5 to 15.0 psi

(0.5 psi

increments)

0.5 to

32.0 oz./sq. in.

(0.5 oz./sq. in.

increments)

1.0 to

55.0 in. w.c.

(0.5 in. w.c.

increments)

Options

O = No Options

A = Special Coating

B = Stainless steel

Weights

C = Optional Weight

Material

D = Optional Hardware

E = Optional Gasket

Material

G = Steam Jacket

or Trace

H = Other

Inlet

Connection

Size

(2 through

6 in.)

Housing

Material

1 = Aluminum

2 = Stainless

Steel

3 = Carbon

Steel

Pallet and Seat

Ring Material

1 = Advanced

Composite-

Polyphenylene

Sulde (PPS)

2 = 316 Stainless

Steel

3 = Other

Pallet Seal

Material

1 = FEP Teon

2 = Buna-N

3 = Viton

4 = Other

Pressure Settings

p = psig

z = oz./sq. in.

n = in. w.c.

0.5 to 15.0 psi

(0.5 psi

increments)

0.5 to

32.0 oz./sq. in.

(0.5 oz./sq. in.

increments)

1.0 to

55.0 in. w.c.

(0.5 in. w.c.

increments)

Vacuum Settings

p = psig

z = oz./sq. in.

n = in. w.c.

0.5 to 15.0 psi

(0.5 psi

increments)

0.5 to

32.0 oz./sq. in.

(0.5 oz./sq. in.

increments)

1.0 to

55.0 in. w.c.

(0.5 in. w.c.

increments)

Options

O = No Options

A = Special Coating

B = Stainless steel Weights

C = Optional Weight

Material

D = Optional Hardware

E = Optional Gasket

Material

G = Steam Jacket

or Trace

H = Other

860 and 960 Series

North America Only

Product Description

The 860 and 960 Series spring-loaded pressure/

vacuum relief valves are designed to handle higher

pressure settings than standard dead weight-

loaded valves.The 860 Series is used for pipe-away

aplications while 960 Series is used for vent-to-

atmosphere applications. Enardo spring-loaded line

are designed for pressures up to 15 psig for tanks with

higher maximum allowable working pressures.

With proper installation, usage and preventative

maintenance, the 860 and 960 Series can supply

many years of pressure/vacuum relief with continuous

sealing abilities that exceed the most stringent industry

standards (1 SCFH at 90% set point per valve).

Spring-loaded pressure/vacuum relief valves have the

option of weight-loaded pallets in either the vacuum or

pressure portion of the valve. The following is the list

of the available spring-loaded pressure/vacuum relief

valve models. See Figure 4.

• Model 860: Pressure/Vacuum Relief Valve -

Pipe-Away

• Model 861: Top Mount Pressure or Side Mount

Vacuum Relief Valve - Pipe-Away

• Model 960: Pressure/Vacuum Relief Valve -

Vent-to-Atmosphere

• Model 961: Pressure Relief Valve -

Vent-to-Atmosphere

• Model 962: Top Mount Vacuum Relief Valve - End

of Line

• Model 963: Side Mount Vacuum Relief Valve

Figure 4. 860 and 960 Series Spring-Loaded Pressure/Vacuum Relief Valve Available Models

MODEL 860 MODEL 861 MODEL 960

MODEL 961 MODEL 962 MODEL 963

860 and 960 Series

North America Only

Product Identication and Marking

Hazardous Locations

Enardo spring-loaded pressure/vacuum relief valves

are available with outer housings of carbon steel,

stainless steel or aluminum, as indicated in Figure 5.

Nameplate

A nameplate is attached to the valve and contains the

following information:

• Model Number – Ex. SL-PVRV, 860- 3X4-42X-X/X

• Conn. Flange Size and Rating – Ex. 4 in.

• Serial Number

• Tag Number (Optional)

• Notied Body Number – Ex. 0575

• Cat. No. (Category Number) –

Ex. II 1 G c T6 or II 2 G c T6

• Year

• Cert. No. (Certicate Number) – Ex. 19407X

• Pressure

- Setting – Ex. Z4.0

- Flow Rate SCFH (Air) – Ex. 55000

• Vacuum

- Setting – Ex. Z0.5

- Flow Rate SCFH (Air) – Ex. 25000

Principle of Operation

The Enardo spring-loaded pressure/vacuum relief valve

maintains a tight seal, until system pressure or vacuum

exceeds the set pressure of the valve. Set pressure is

established by the force of a spring or a set of multiple

springs acting on the valve pallet. When the system

pressure is above the set pressure, the pallet starts to

lift, breaking the seal between the seat and pallet. This

allows vapors to pass through the valve orice and

relieve pressure buildup. The valve reseals upon relief

and remains sealed.

Relieving vapors near the set pressure in a continuous

manner may cause the pallet to utter or oscillate inside

the valve chamber. This is common to products of this

model. Operating the valve with utter or oscillation may

cause premature valve damage or wear over time. The

utter zone typically begins at the set point and ends at

the ow rate associated with 10% overpressure. The

Enardo Valve Sizing Program displays the utter zone.

Contact your local Sales Ofce with any questions or

additional assistance.

Figure 5. ATEX Certified Markings

OUTER HOUSING OF STAINLESS STEEL,

CARBON STEEL OR COATED ALUMINUM

OUTER HOUSING OF UNCOATED ALUMINUM

860 and 960 Series

North America Only

3. After the valve has been properly aligned, install nuts

and bolts. Tighten the bolts down in a cross-hatched

pattern. Ensure the valve is securely fastened.

Installing Pressure/Vacuum Relief Valves

with Weight-loaded Pallets

Note

The following steps 1 to 7 apply only to

valves that have a weight-loaded vacuum

or pressure pallet. These steps do not

apply to pallets that are spring-loaded on

both the pressure and vacuum sides.

Installation

CAUTION

Ensure the tank is at atmospheric pressure

before opening. A pressure build-up inside

the tank can cause a spray to be emitted

from the valve if opened under pressure.

Springs are energy storage devices and

are dangerous if handled improperly.

Never loosen any nuts or cap screws

until all spring preload has been relieved.

Always use appropriate safety equipment

including safety glasses or shields any

time you are working with a spring-

loaded valve.

Installing Pressure/Vacuum Relief Valves

with Only Spring-Loaded Pallets

1. Attach the valve to the appropriate mating ange

using a proper gasket. To ensure proper function,

install the valves to a level horizontal surface so

the pallet will move vertically. For Models 860,

960 and 962, the valve shipped from factory has

certain studs installed.

2. Orient valve in desired direction. Models 860 and

861 require the pipe-away connection ange to be

properly oriented before the base is bolted down.

Figure 6. Pressure and Vacuum Flow

PRESSURE FLOW

VACUUM FLOW

Pressure Flow

Vacuum Flow

Pressure Flow

Vacuum Flow

860 and 960 Series

North America Only

4. Reinsert uncovered valve pallets back into the

unit. Make sure the lower stem on the pallet is

centered into the valve seat. If the pallet appears

to be off center to the valve chamber, or if there

is difculty positioning the lid or guide, carefully

inspect the pallet to ensure it is inserted properly.

5. To adjust valve settings higher than minimum,

use the weights included with the shipment to

increase the pressure setting. Weights are packed

separately within the unit shipping package and are

labeled “PRESSURE” and/or “VACUUM”. If weights

are shipped with the unit, they should be installed

onto the pallets in the valve chamber in which they

are labeled. Gently slide the weights onto the pallet

stem and down on top of the valve pallet.

1. If the valve has a weight-loaded vacuum, loosen

fasteners on top of the valve and remove the lid,

hood or guide.

2. Remove valve pallets from the unit.

3. Separate the protective cardboard coverings from

the pallets. Be careful not to damage the pallet

seal surface.

860 and 960 Series

North America Only

6. Replace any lid, hood or guide that was previously

removed, and fasten securely. When tightening

down lids, make sure the O-ring in the lid has full

contact with the sealing surface.

7. Attach the valve to the appropriate mating ange

using proper gasket. To ensure proper function,

install the valve to a level horizontal surface so the

pallet will move vertically. Units that are tilted during

usage may suffer premature damage or wear.

For more details on using weights to adjust the pallet

setting, refer to the Weight Information section.

Note

Before using your new Enardo pressure/

vacuum relief valve, make sure that your

valve is properly set for the appropriate

pressure and vacuum settings. Early or

delayed relief could be dangerous and/or

expensive depending on the application.

Spring–loaded valves are set at the

factory. Additional adjustment should not

be required and is not recommended.

Maintenance

WARNING

Ensure the tank is at atmospheric pressure

before opening or removing a valve.

Pressure build-up inside the tank can

cause a spray to be emitted from the valve

if opened under pressure.

Springs are energy storage devices and

are dangerous if handled improperly.

Never loosen any nuts or screws until

all spring preload has been relieved.

Instructions for removing spring preload

are provided in this section. Always use

appropriate safety equipment including

safety glasses or shields any time you are

working with a spring-loaded valve.

Determine if the pressure/vacuum relief valve

assembly is an 860 Series pipe-away in-

line conguration or a 960 Series vent-to

atmosphere conguration.

860 Series Pipe-Away

See Figure 8 for reference.

1. Remove the cylindrical cap(s) from the lid(s) by

removing the small screws.

2. Turn the spring plunger clockwise to remove all

spring preload. Note the number of turns the

plunger has been turned to facilitate reassembly.

3. Remove the hex bolts holding the lid to the body

and lift off the lid.

CAUTION

If the lid shows signs of any remaining

spring preload, do not continue with

the disassembly until this condition is

corrected. If the cap screws seem to be

under a load or if the lid starts to rise as

the cap screws are loosened, the spring

is still under load.

4. The valve contains a single spring or a multiple

nested spring arrangement. Inspect the springs and

other internal parts for signs of deterioration and/or

corrosion. Replace any worn or damaged parts.

860 and 960 Series

North America Only

Figure 7. 860 and 960 Series Common Valve Configurations

PIPE-AWAY SPRING-LOADED PRESSURE/VACUUM RELIEF VALVE

VENT-TO-ATMOSPHERE SPRING-LOADED PRESSURE/VACUUM RELIEF VALVE

MODEL 860

MODEL 861

MODEL 860

MODEL 963

MODEL 960

MODEL 961

MODEL 960

MODEL 962

860 and 960 Series

North America Only

5. Remove any valve pallets and weights from the

unit if so equipped. Keep in mind that these will be

reinstalled, so keep track of the chamber from which

they were removed.

6. Inspect the pallets for any damage and/or buildup

that may affect its sealing characteristics or its ability

to move properly inside the valve. If necessary, gently

clean the pallet and seal with a suitable solvent and

nonabrasive cloth.

7. Clean the removed parts with a suitable solvent.

8. Inspect the valve seats installed in the unit. The

sealing surfaces should be smooth and free of nicks

or buildup. Check the guides for anything that may

keep the valve pallet from moving properly inside

the valve. If necessary, gently clean the seats with a

suitable solvent and nonabrasive cloth.

9. If lid is available on the valve, clean any buildup that

may exist in or around the guide hole located in the

center of the part.

10. If the valve is tted with a screen of some type,

clear away any blockage that may impede

proper ow.

11. Reassemble the valve in reverse order

from disassembly.

12. Make sure the lower stem on the pallet is centered

into the valve seat. If the pallet appears to be off

center to the valve chamber, or if there is difculty

positioning the lid or guide, the pallet may be

inserted improperly.

13. Adjust the spring preload by returning the spring

plunger to its factory set location as noted earlier

or install on a pressure test stand and adjust to the

desired setting.

960 Series Vent to Atmosphere

See Figures 8 and 9 for reference.

1. For 4 and 6 in. valves, remove the cylindrical cap(s)

from the lid(s) by removing the small screws.

2. Remove the hood by removing the wing nuts or

screws holding it in place. Hood can be removed

without releasing spring preload, but do not

remove the hex nuts until the spring preload has

been removed.

3. Follow steps 2 to 13 from the 860 Series Pipe-

Away Maintenance section on page 7.

Figure 8. 960 Series Pressure/Vaccum Relief Valves

2 AND 3 IN. RELIEF VALVES

HEX NUTS

TYPICAL

4 PLACES

SCREWS

TYPICAL

4 PLACES

4 AND 6 IN. RELIEF VALVES

SCREWS

TYPICAL

3 PLACES

ENLARGED HOLES

WITH HEX NUTS

TYPICAL 3 PLACES

WING NUTS

TYPICAL

3 PLACES

860 and 960 Series

North America Only

Weight Information

Note

Spring-loaded valves can have a weight-

loaded component.

The Enardo pressure/vacuum relief valve can achieve

various pressure and vacuum settings in units of

ounces per square inch (oz./sq. in.) or inches of water

column (in. w.c.) when weights are used. Standard

Enardo weight-loaded valve pallets installed without

weights or springs reach minimum settings of

1/2 oz./sq. in. or 1 in. w.c. The pallets’ setting is stamped

into the seal support located on the bottom side of the

pallet. The pallet’s setting of 1/2 oz./sq. in. or 1 in. w.c. is

etched into the support.

When a valve requires a setting higher than the

1/2 oz./sq. in. or 1 in. w.c. basic pallet setting, use weights

to increase the pallet’s set pressure. Enardo weights also

come in units of ounces per square inch (oz./sq. in.) or

inches of water column (in. w.c.). The individual setting

of each weight is either etched or imprinted into the

weight. Emerson offers several different sizes of pressure/

vacuum relief valves. To ensure that the right weight is

placed on the right pallet, keep in mind that the weights

and pallets that go together will have the same outside

diameter. Standard Enardo weights allow the user to

stack in increments of 1/2 oz./sq. in. or 1/2 in. w.c.

Your Enardo pressure/vacuum relief valve shipment

includes prepackaged weight kits used to achieve the

proper settings for the valve you ordered. The package

labeled “PRESSURE” goes on the pallet in the pressure

chamber. The package labeled “VACUUM” goes on

the pallet in the vacuum chamber. All of the weights in

these packages should be installed. If one or neither of

these packages is included with your order, then they are

not needed.

If the pressure and vacuum weights are mixed together,

sort and reorganize the weights.

When installing weights for the Enardo pressure/vacuum

relief valve, check the required settings for the valve

located on the tag attached to the unit. Then add weights

to the pallet to achieve the required setting. For example,

if the relief valve’s setting is 6 oz./sq. in., add weights with

the total setting of 5-1/2 oz./sq. in. to the valve; the pallet

alone achieves 1/2 oz. setting. Therefore, the weights to

be added must total the remaining balance of the required

setting, which in this example is 5-1/2 oz. Hence, the

valve pressure setting is the sum of the settings of the

pallet and the weights.

Valve Repair

On occasion, valve housings or internal components

can be damaged due to accidents, improper usage

or wear. With Enardo’s modular design and unique

replaceable seat, many repairs to damaged valves

can be made on site instead on a remote repair site.

This feature causes minimal downtime if there is an

equipment breakdown or malfunction.

A damaged valve may require replacement of the

entire pressure or vacuum assembly, or it may require

a single component, such as a valve seat or pallet. All

Enardo seats and pallets are tested for their sealing

capabilities before they are shipped from the plant.

Enardo assemblies and components can be quickly

and easily installed. Once installed, the valve is ready

for continued dependable operation.

Contact your local Sales Ofce with any questions

or additional assistance you may need for repairing

your valve.

Parts Ordering

When corresponding with your local Sales Ofce about

this equipment, always reference the equipment serial

number stamped on the nameplate.

When ordering replacement parts, specify the

complete 7-character part number of each required

part as found in the following parts list.

Figure 9. Weights on Pallet

860 and 960 Series

North America Only

8 Hex Bolt (as required)

20 - 1/4 X 0.88 in. (2 and 3 in. Valves)

316 Stainless steel 2035903

A307 Zinc plated 2035805

20 - 1/4 X 1.00 in. (4 and 6 in. Valves)

316 Stainless steel 2035906

A307 Zinc plated 2035806

9 Flat Washer, 1/4 in. (as required)

316 Stainless steel 2012510

F436 Zinc plated 2000208

10 Gasket

3 in. body for 2 and 3 in. valves

Buna N (1/16 in.) 8550801

Ethylenepropylene (EPDM) (3/32 in.) 8550812

Teon

(1/16 in.) 8550807

Viton

(1/16 in.) 8550803

6 in. for 4 and 6 in. valves

Buna N (1/16 in.) 8590801

Ethylenepropylene (EPDM) (3/32 in.) 85908XX

Teon

(1/16 in.) 8550803

Viton

(1/16 in.) 8590802

11 Stud, 16 - 3/8 x 1.5 in. (2 required)

A193-B7 Zinc plated 2006834

316 Stainless steel 2010434

12 Hex Bolt, 16 - 0.375 x 0.875 in.

(2 and 3 in. valves) (2 required)

A307 Zinc plated 2000505

316 Stainless steel 2013205

13 Flat Washer, 3/8 in. (as required)

F436 Zinc plated 2000204

316 Stainless steel 2012504

14 Hex Nut, 16 - 3/8 in. (2 required)

A563 Zinc plated 2000402

316 Stainless steel 2013302

15 PVRV, Extension screen

2 and 3 in. valves

Zinc plated carbon steel 8553801

316 Stainless steel 8554505

4 and 6 in. valves

Zinc plated carbon steel 8553802

316 Stainless steel 8554506

16 Seat Retainer

2 and 3 in. valves

3003-H14 Aluminum 8591001

A1011 Carbon steel 8591002

304L Stainless steel 8591003

316 Stainless steel 8591012

4 and 6 in. Valves

3003-H14 Aluminum 8591004

A1011 Carbon steel 8591005

304L Stainless steel 8591006

316 Stainless steel 8591010

17 Bolt, Hex 16 - 3/8 x 0.50 in. (6 required)

A307 Zinc plated 2000515

316 Stainless steel 2013209

18 Stud

11 - 5/8 in. x 2.75 in. (2, 3 and 4 in. valves) (2 required)

A193-B7 Zinc plated 2007204

316 Stainless steel 2010804

10 - 3/4 in. x 3.25 in. (4 and 6 in. valves) (4 required)

A193-B7 Zinc plated 2007206

316 Stainless steel 2010906

19 Plug, 1/4 in. Hex Head

Zinc plated carbon steel 2023805

316 Stainless steel 2030705

20 Nameplate, PVRV, ATEX, T304 Stainless steel (as required) 8551005

21 Drive Screw, #4

18-8 Stainless steel (as required) 2001401

22 Adapter (as required)

2 in. valves 85520XX

3 in. valves 85520XX

4 in. valves 85917XX

6 in. valves 85917XX

Parts List

Models 860, 861 and 963

Key Description Part Number

1 Upper body, SL-PVRV, Machined

3 in.

Flat faced 85902XX

Raised faced 85902XX

4 in.

Flat faced 85902XX

Raised faced 85902XX

6 in.

Flat faced 85902XX

Raised faced 85902XX

8 in.

Flat faced 85902XX

Raised faced 85902XX

2 Lower body, SL-PVRV, Machined

2 in.

Flat faced 85901XX

Raised faced 85901XX

3 in.

Flat faced 85901XX

Raised faced 85901XX

4 in.

Flat faced 85901XX

Raised faced 85901XX

6 in.

Flat faced 85901XX

Raised faced 85901XX

3 Webbed seat, PVRV, Machined (2 required)

2 and 3 in. valves

Polyphenylene Sulde (PPS) 8553701

A351 CF8M Stainless steel 8553703

4 and 6 in. valves

Polyphenylene Sulde (PPS) 8553702

A351 CF8M Stainless steel 8553704

4 O-ring (2 required)

244, 2 and 3 in. valves

Buna 2001202

Viton

2012702

Teon

/Silicon 2020901

Silicon 2051202

261, 4 and 6 in. valves

Buna 2001204

Viton

2012704

Teon

/Silicon 2020902

Silicon 2051204

5 Lid, SL-PVRV, Machined (as required)

2 in. valves 85906XX

3 in. valves 85906XX

4 in. valves 85906XX

6 in. valves 85906XX

6 Cap (as required)

3 in. for 2 and 3 in. valves

Aluminum 85907XX

Carbon steel 85907XX

316/316L Stainless steel 85907XX

6 in. for 4 and 6 in. valves

Aluminum 85907XX

Carbon steel 85907XX

316/316L Stainless steel 85907XX

7 Lid Gasket, (as required)

3 in. for 2 and 3 in. valves

Buna 8591601

Viton

8591602

Teon

/Goretex 8591603

6 in. for 4 and 6 in. valves

Aluminum 8591604

Carbon steel 8591605

316/316L Stainless steel 8591606

Key Description Part Number

Teon

and Viton

are marks owned by E. I. du Pont de Nemours and Company.

860 and 960 Series

North America Only

Teon

and Viton

are marks owned by E. I. du Pont de Nemours and Company.

Models 860, 861 and 963 (continued)

Key Description Part Number

23 Lid Assembly (as required)

3 in. for 2 and 3 in. valves 85993XX

6 in. for 4 and 6 in. valves 85993XX

24 Guide Shaft (as required)

2 and 3 in. valves

Aluminum 8594201

Carbon steel 8594202

Stainless steel 8594203

4 and 6 in. valves

Aluminum 8594204

Carbon steel 8594205

Stainless steel 8594206

25 Plunger (as required)

2 and 3 in. valves

Aluminum 8591201

Carbon steel 8591202

Stainless steel 8591203

4 and 6 in. valves

Aluminum 8591204

Carbon steel 8591205

Stainless steel 8591206

26 O-ring, 1.75 in. (as required) - - - - - - -

27 O-ring, 1 in. (as required) - - - - - - -

28 Jam Nut, 3/4 in. (as required)

Carbon steel 2035603

316 Stainless steel 2035703

29 Flat Washer, 3/4 in. (as required) - - - - - - -

30 Bearing, 0.75 x 0.63 x 0.75 in. (as required)

NF1012-12 Flanged, Nylon (PE) 2020602

EF101212 Flanged, SAE 841 Bronze 2053001

Models 960, 961 and 962

Key Description Part Number

1 Lower body, SL-PVRV

2 in. 85901XX

3 in. 85901XX

4 in. 85901XX

6 in. 85901XX

2 Webbed Seat, PVRV, Machined, (2 required)

2 and 3 in. valves

Polyphenylene Sulde (PPS) 8553701

A351 CF8M Stainless steel 8553703

4 and 6 in. valves

Polyphenylene Sulde (PPS) 8553702

A351 CF8M Stainless steel 8553704

3 O-ring (2 required)

224, 2 and 3 in. valves

Buna 2001202

Viton

2012702

Teon

/Silicon 2020901

Silicon 2051202

261, 4 and 6 in. valves

Buna 2001204

Viton

2012704

Teon

/Silicon 2020902

Silicon 2051204

4 Lid, SL-PVRV, Machined (as required)

2 in. valves 85906XX

3 in. valves 85906XX

4 in. valves 85906XX

6 in. valves 85906XX

5 Cap (as required)

3 in. for 2 and 3 in. valves

Aluminum 85907XX

Carbon steel 85907XX

316/316L Stainless steel 85907XX

5 Cap (as required) (continued)

6 in. for 4 and 6 in. valves

Aluminum 85907XX

Carbon steel 85907XX

316/316L Stainless steel 85907XX

6 Lid Gasket, (as required)

3 in. for 2 and 3 in. valves

Buna 8591601

Viton

8591602

Teon

/Goretex 8591603

6 in. for 4 and 6 in. valves

Aluminum 8591604

Carbon steel 8591605

316/316L Stainless steel 8591606

7 Hex Bolt (as required)

20 - 1/4 in. X 0.88 (2 and 3 in. valves)

316 Stainless steel 2035903

A307 Zinc plated 2035805

20 - 1/4 in. X 1.00 (4 and 6 in. valves)

316 Stainless steel 2035906

A307 Zinc plated 2035806

8 Flat Washer, 1/4 in. (as required)

316 Stainless steel 2012510

F436 Zinc plated 2000208

9 Gasket

3 in. body for 2 and 3 in. valves

Buna N (1/16 in.) 8550801

Ethylenepropylene (EPDM) (3/32 in.) 8550812

Teon

(1/16 in.) 8550807

Viton

(1/16 in.) 8550803

6 in. for 4 and 6 in. valves

Buna N (1/16 in.) 8590801

Ethylenepropylene (EPDM) (3/32 in.) 85908XX

Teon

(1/16 in.) 8550803

Viton

(1/16 in.) 8590802

10 Vent Mesh

3 in. for 2 and 3 in. valves

Aluminum 8551801

Carbon steel 8551803

316 Stainless steel 8551805

6 in. for 4 and 6 in. valves

Aluminum 8551802

Carbon steel 8551804

316 Stainless steel 8551806

11 Vent Shield

3 in. for 2 and 3 in. valves

Aluminum 8554301

Carbon steel 8554303

304L Stainless steel 8554305

6 in. for 4 and 6 in. valves

Aluminum 8554302

Carbon steel 8554304

304L Stainless steel 8554306

12 Hood

3 in. Spring Loaded for 2 and 3 in. valves

Aluminum 8591501

Carbon steel 8591502

304 Stainless steel 8591503

3 in. PVRV for 2 and 3 in. valves

Aluminum 8551501

Carbon steel 8551503

304 Stainless steel 8551505

6 in. Spring Loaded for 4 and 6 in. valves

Aluminum 8591504

Carbon steel 8591505

304 Stainless steel 8591506

6 in. PVRV for 4 and 6 in. valves

Aluminum 8591510

Carbon steel 8591511

304 Stainless steel 8591512

13 Vent Rod

3 in. PVRV (4 required)

2 and 3 in. valve, Aluminum 8552701

2 and 3 in. valve, 304L Stainless steel 8552703

Key Description Part Number

860 and 960 Series

North America Only

Key Description Part Number

Models 960, 961 and 962 (continued)

Key Description Part Number

13 Vent Rod (continued)

3 in. SL-PVRV (4 required)

2 and 3 in. valve, Carbon steel 8592701

2 and 3 in. valve, 304 Stainless steel 8592702

6 in. PVRV (6 required)

4 and 6 in. valve, Aluminum 8552702

4 and 6 in. valve, 304L Stainless steel 8552704

6 in. SL-PVRV (6 required)

4 and 6 in. valve, Carbon steel 8552703

4 and 6 in. valve, 304 Stainless steel 8592704

14 Helical Lock Washer, 3/8 in. (as required)

Zinc plated carbon steel 2021703

304 Stainless steel 2022801

316 Stainless steel 2021602

15 Upper Guide (as required)

3 in. for 2 and 3 in. valves

Aluminum 8553601

Zinc plated carbon steel 8553603

304L Stainless steel 8553605

6 in. for 4 and 6 in. valves

Aluminum 8599801

Zinc plated carbon steel 8599802

304L Stainless steel 8599803

16 Wing Nut, 16 - 3/8 in. (as required)

Zinc plated carbon steel 2001001

316 Stainless steel 2026201

17 Bearing (as required)

0.75 x 0.63 x 0.75 in. NF1012-12 Flanged,

Nylon 2020602

0.75 x 0.63 x 0.75 in. EF1012-12 Flanged,

SAE 841 Bronze 2053001

19 Flat Washer, 3/8 in. (as required)

F436 Zinc plated 2000204

316 Stainless steel 2012504

20 Hex Nut, 16 - 3/8 in. (as required)

A563 Zinc plated 2000402

316 Stainless steel 2013302

21 Extension Screen, PVRV (as required)

2 and 3 in. valves

Zinc plated carbon steel 8553801

316 Stainless steel 8554505

4 and 6 in. valves

Zinc plated carbon steel 8553802

316L Stainless steel 8554506

Aluminum 8554502

22 Seat Retainer

2 and 3 in. valves

3003-H14 Aluminum 85910XX

A1011 Carbon steel 85910XX

316 Stainless steel 85910XX

4 and 6 in. valves

3003-H14 Aluminum 85910XX

A1011 Carbon steel 85910XX

316 Stainless steel 85910XX

23 Hex Bolt, 16 - 3/8 x 0.50 in. (6 required)

A307 Zinc plated 2000515

316 Stainless steel 2013209

24 Stud, 11 - 5/8 x 2.75 in. (2 required)

A193-B7 Zinc plated 2007204

316 Stainless steel 2010804

25 Nameplate, PVRV, ATEX, T304 Stainless steel 8551005

26 Dive Screw, #4, 18-8 Stainless steel (4 required) 2001401

27 Adapter (as required)

2 in. 85520XX

3 in. 85520XX

4 in. 85917XX

6 in. 85917XX

28 Cover, PVV (as required)

3 in. for 2 and 3 in. valves

6061-T6 Aluminum 8552901

A36 Carbon steel 8552903

316 Stainless steel 8552905

6 in. for 4 and 6 in. valves

6061-T6 Aluminum 8591801

A36 Carbon steel 8591802

316 Stainless steel 8591803

29 Helical Lock Washer, 1/4 in.,

316 Stainless steel (as required) 2021607

30 Guide Shaft (as required)

2 and 3 in. valves

Aluminum 8594201

Carbon steel 8594202

Stainless steel 8594203

4 and 6 in. valves

Aluminum 8594204

Carbon steel 8594205

Stainless steel 8594206

31 Plunger (as required)

2 and 3 in. valves

Aluminum 8591201

Carbon steel 8591202

Stainless steel 8591203

4 and 6 in. valves

Aluminum 8591204

Carbon steel 8591205

Stainless steel 8591206

32 O-ring, 1.75 in. (as required) - - - - - - -

33 O-ring, 1 in. (as required) - - - - - - -

34 Flat Washer, 3/4 in. (as required) - - - - - - -

35 Jam Nut, 3/4 in. (as required)

Carbon steel 2035603

316 Stainless steel 2035703

Pallet Assembly

Key Description Part Number

1 Pallet Seal

3 in., 1 hole

0.01 in. thickness, Teon

8554822

0.02 in. thickness, Teon

8554823

0.03 in. thickness, Teon

8554824

1/32 in. thickness, Viton

8554825

1/32 in. thickness, Buna 8554826

1/16 in. thickness, Viton

8554833

1/16 in. thickness, Buna 8554834

6 in., 1 hole

0.01 in. thickness,

Teon

(For Stainless steel Pallet) 8554827

0.01 in. thickness, Teon

(For Polyphenylene Sulde [PPS] Pallet) 8554854

0.02 in. thickness, Teon

8554828

0.03 in. thickness, Teon

8554829

1/32 in. thickness, Viton

8554830

1/32 in. thickness, Buna 8554831

1/16 in. thickness, Viton

8554852

3 in., High Temperature

0.01 in. thickness, Teon

8554839

6 in., High Temperature

0.01 in. thickness, Teon

8554838

0.02 in. thickness, Teon

8554837

3 in., 10 hole

0.01 in. thickness, Teon

8554856

6 in., 10 hole

0.01 in. thickness, Teon

8554857

2 Upper Stem - - - - - - -

Teon

and Viton

are marks owned by E. I. du Pont de Nemours and Company.

860 and 960 Series

North America Only

Pallet Assembly (continued)

Key Description Part Number

3 Spring, Stainless steel (as required)

3 in.

0.5 psi E8590901

1 psi E8590902

2 psi E8590903

4 psi E8590904

8 psi E8590905

6 in.

0.5 psi E8590906

1 psi E8590907

2 psi E8590908

4 psi E8590909

8 psi E8590910

4.87 to 8.55 psi E8590911

8.55 to 15.01 psi E8590912

- 860, 861, & 963 Exploded Drawing

960, 961, & 962 Exploded Drawing

Figure 10. Models 860, 861 and 963 Assembly Drawing

Key Description Part Number

4 Lower Stem - - - - - - -

5 Pallet Disc - - - - - - -

6 Seal Support - - - - - - -

7 Bolt (as required) - - - - - - -

8 Hex Nuts (as required) - - - - - - -

9 O-ring - - - - - - -

10 SL Pallet Disc Support - - - - - - -

11 Plunger Plate - - - - - - -

860 and 960 Series

North America Only

Figure 11. Models 960, 961 and 962 Assembly Drawing

- 860, 861, & 963 Exploded Drawing

960, 961, & 962 Exploded Drawing

860 and 960 Series

North America Only

Figure 12. Pallet Assembly Drawing

NOTE: NUMBER AND

CONFIGURATION OF

SPRINGS WILL VARY

NOTE: BOLTS MAY

NOT BE PRESENT

OR CONFIGURATION

MAY VARY

860 and 960 Series

Facebook.com/EmersonAutomationSolutions

LinkedIn.com/company/emerson-automation-solutions

Twitter.com/emr_automation

[email protected]

Enardo.com

The Emerson logo is a trademark and service mark of Emerson

Electric Co. All other marks are the property of their prospective owners.

Enardo™ is a mark owned by Regulator Technologies Tulsa, LLC, a

business of Emerson Automation Solutions.

The contents of this publication are presented for informational purposes

only, and while every effort has been made to ensure their accuracy,

they are not to be construed as warranties or guarantees, express or

implied, regarding the products or services described herein or their use

or applicability. We reserve the right to modify or improve the designs or

specications of such products at any time without notice.

Emerson Process Management Regulator Technologies

Tulsa, LLC does not assume responsibility for the selection, use or

maintenance of any product. Responsibility for proper selection, use

and maintenance of any Emerson Process Management Regulator

Technologies Tulsa, LLC product remains solely with the purchaser.

North America Only

Emerson Automation Solutions

Americas

McKinney, Texas 75070 USA

T +1 800 558 5853

+1 972 548 3574

Tulsa, OK 74146 USA

T +1 918 662 6161

Europe

Bologna 40013, Italy

T +39 051 419 0611

Asia Pacic

Singapore 128461, Singapore

T +65 6770 8337

Middle East and Africa

Dubai, United Arab Emirates

T +971 4 811 8100

Enardo 860 and 960 Series Spring-Loaded Pressure/Vacuum Relief Valve Owner's manual

Enardo 860 and 960 Series Spring-Loaded Pressure/Vacuum Relief Valve Owner's manual

Enardo 860 and 960 Series Spring-Loaded Pressure/Vacuum Relief Valve Owner's manual

Related papers

Other documents