Powell Valves Resilient Seated Butterfly Valve User manual
- Type
- User manual
2503 Spring Grove Avenue, Cincinnati, OH 45214 • 800.888.2583 • ww w.powellvalves.com
2
Resilient Seated Buttery Valve Manual Version A
Date June 30, 2020
TABLE OF CONTENTS
1. General Design and Information 3
1.1 Valve Design 3
2. Introduction and Safety Information 4
2.1 Introduction 4
2.2 Safety Information 4
3 General Precautions 5
3.1 Material Selection 5
3.2 Pressure/Temperature Rating 5
3.3 Hydrostatic Test 5
4 Storage and Preparation 6
4.1 Storage 6
4.2 Preparation 6
5 Installation 7
5.1 Pre-Installation Inspection 7
5.2 Regular Inspection 7
5.3 Dead-End Service 7
5.4 Installation Procedure 8
6 Operation 9
6.1 Lever Operation 9
6.2 Gear Operation 9
6.3 Motor and Pneumatic Operation 9
7 Removal 10
Appendix A - Valve Seat Material Selection Guide 11
2503 Spring Grove Avenue, Cincinnati, OH 45214 • 800.888.2583 • www.powellvalves.com
WAFER STYLE
LUG STYLE
1. GENERAL DESIGN AND INFORMATION
1.1 VALVE DESIGN
- Direct Mount
- Available in Wafer and Lug Styles (shown below)
- Integral ISO mounting pad for easy valve
operation; no bracket needed
- Multiple seat materials available (Valve Seat Material
Selection Guide Available in Appendix A)
- 2” through 12” standard with lever (shown below)
- 14” and larger standard with gear (see catalog)
- Seat face negates the need for ange gaskets
- Upper and Lower Bearings to maximize valve life
- Support shaft seal: bonding of elastomer to
phenolic backing ring protects against
distortion, a common cause of shaft leakage
- One-piece stem ensures dependability and
positive disc positioning
- Disc has precision prole that provides bubble tight
shuto and assures minimum required torque
- O-Ring ensures dependability and positive disc positioning
3
Resilient Seated Buttery Valve Manual Version A
Date June 30, 2020
2503 Spring Grove Avenue, Cincinnati, OH 45214 • 800.888.2583 • ww w.powellvalves.com
4
Resilient Seated Buttery Valve Manual Version A
Date June 30, 2020
2. INTRODUCTION AND SAFETY INFORMATION
2.1 INTRODUCTION
This manual has been prepared to serve as a guide to ensure continuous satisfactory service and assist in restoring a valve to
proper working condition.
The safety information, valve features, material selection, storage, installation, operation, and removal of Powell
Resilient Seated Buttery Valves is covered in this manual.
Technical information such as valve dimensions, weights, bolting size and quantities, required torque to operate the valves,
available gear and lever information, and details for ordering can be found in the product catalog.
2.2 SAFETY INFORMATION
The following general safety notices supplement the specic warnings and cautions appearing elsewhere in this manual.
They are recommended precautions that must be understood and applied during operation and maintenance of the
equipment covered herein.
- Always wear eye shields, gloves and overalls. Wear protective footwear and headgear.
- Do not attempt to disassemble a valve while there is pressure in the line. Make sure both upstream and
downstream pressures are relieved. Disassemble with caution in the event all pressures have not been relieved.
- To prevent valve distortion, inecient operation, or early maintenance problems, support piping on each side of
the valve.
- Do not touch surface of valve in a high temperature application.
- Valves are not to be used with unstable uids.
2503 Spring Grove Avenue, Cincinnati, OH 45214 • 800.888.2583 • www.powellvalves.com 5
Resilient Seated Buttery Valve Manual Version A
Date June 30, 2020
3. GENERAL PRECAUTIONS
3.1 MATERIAL SELECTION
The possibility of material deterioration in service and the need for periodic inspection is dependednt on the service
uid. Carbide phase conversion to graphite, oxidation of ferrite materials, and decrease in ductility of carbon steels at low
temperature (even in applications above 29°F) and susceptibility to inter-granular corrosion of austenitic materials or grain
boundary attack of nickel-base alloys are among the factors to consider. The user is responsible to determine if the used
materials are suitable for the application.
3.2 PRESSURE-TEMPERATURE RATING
The Pressure-Temperature rating, published in Appendix A, is considered an appropriate guide to the maximum
temperature and pressure the resilient seated buttery valves may withstand. For reference, a client can ask the valve
distributor or manufacturer for assurance of suitability when buttery valves are subjected to the following conditions:
- Valves are left closed for long periods of service under high-temperature or high-pressure service conditions.
- Valves are operated frequently for long periods with high-temperature or high-pressure service conditions.
3.4 HYDROSTATIC TEST
Before delivery, all valve bodies are tested at 1.5 times the working pressure in the open position. After installation, the
pipeline system may be subject to a system test, which does not to exceed the pressure mentioned above.
2503 Spring Grove Avenue, Cincinnati, OH 45214 • 800.888.2583 • ww w.powellvalves.com
6
Resilient Seated Buttery Valve Manual Version A
Date June 30, 2020
4. STORAGE AND PREPARATION
4.1 STORAGE
4.1.1 Temporary Storage
If valves are to be stored before installation, the following should be observed:
- Keep the valves wrapped and protected as shipped from the manufacturer.
- Do not remove the plastic bag or protective end covering until the valve is ready for installation. This will reduce
the possibility of foreign material damaging internal valve components.
- Valves stored outdoors should be positioned such that water does not accumulate in the valve body.
4.1.2 Long Term Storage
If the valves are to be stored longer than one year, they should be prepared in the following manner:
- Do not remove the protective end covering.
- Valve which will remain in storage for an extended period of time should have a preservative applied to the
external surface.
4.2 PREPARATION
1. Remove the plastic bag or valve end protection (if any).
2. Prior to shipment from the manufacturer, a preservative may have been applied to the inner body of the
valve. This preservative may be removed with a solvent.
3. The inside of the valve should be inspected and blown out with compressed air. Adjacent piping must be
clean and free from debris to prevent damage to the valve.
4. To prevent valve distortion, inecient operation or early maintenance problems, support piping on each
side of the valve.
5. Make sure the valve is positioned such that there is sucient space so that the handle is easily and safely
reached.
6. The valve can be installed in any position without regard for the direction of the ow, unless marked in the
ow direction.
2503 Spring Grove Avenue, Cincinnati, OH 45214 • 800.888.2583 • www.powellvalves.com 7
Resilient Seated Buttery Valve Manual Version A
Date June 30, 2020
5. INSTALLATION
5.1 PRE-INSTALLATION INSPECTION
Powell recommends that customers always inspect their valves before attempting installation, in order to ensure
the item is undamaged and meets the correct specications:
- Check to guarantee valve has not been damaged during shipment.
- Remove the protective covering on the valve ends and clean it with compressed air or a clean rag.
Along with inspecting the valve, it is important for the customer to make certain the pipeline is clean and ready for
the installation of the valve:
- All foreign material (dirt, welding chips, rust, etc.. ) should be removed from the inside of the pipeline.*
- The pipe ange and gasket surface should be clear of all unwanted material
* Foreign material can scratch and damage the internals of the valve when carried by the uid
5.2 REGULAR INSPECTION
The valve should be visually inspected when initially used and whenever the valve is used after long periods of dormancy:
- It is important to regularly check the tightness of bolting. (See Installation section Table 1 for bolting torque)
- Conrm there is no damage to the seat, seat retainer, or body end surfaces.
5.3 DEAD END SERVICE
Lug Style valves may be used for dead end service up to 75 psi.
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Resilient Seated Buttery Valve Manual Version A
Date June 30, 2020
5.4 INSTALLATION PROCEDURE
1. Valve should be fully closed before installing.
2. The set screw on the side of the valve body has been factory set at the correct position.
DO NOT ADJUST THE SET SCREW.
3. The valve is bi-directional and may be oriented in either direction.
4. The Valve Seat acts as the end ange seal. No ange gaskets are required.
5. See gures below.
6. Valve may be lifted into position by strap or sling suitable for the weight of the valve by securely attaching
around body neck area. Chains or cables may only be used if valve is protected from damage. Care
must be exercised when attaching the lifting strap and lifting to prevent damage to the valve stem,
actuator, any other valve component, or any injury to operator or other nearby personnel/equipment.
7. There may not be any piping component adjacent to the valve that would interfere with the valve disc during
opening or closing operations since the disc extends beyond the valve ends when the valve is opened.
Figure 1 - Valve Installation Notes:
- There should be enough room for the valve to
slip into place, being careful to not damage the
sealing surface.
- Ensure valve is closed when installing so as to
prevent any damage to the disc or seating areas.
- Bolts should be tightened to the recommended
torque in Table 1 for a complete seal.
Table 1 - Bolting Torque
Bolt Diameter Torque (Ft-lbs)
1/2” 55
5/8” 105
3/4” 180
7/8” 290
1” 440
1-1/8” 640
1-1/4” 820
2503 Spring Grove Avenue, Cincinnati, OH 45214 • 800.888.2583 • www.powellvalves.com 9
Resilient Seated Buttery Valve Manual Version A
Date June 30, 2020
6. OPERATION
6.1 LEVER ACTUATED OPERATION
- A valve is in the closed position when the lever is perpendicular to the centerline of the pipeline.
- A valve is in the open position when the lever is parallel to the centerline of the pipeline.
- The disc position is also shown by the indicator plate at the top of the valve.
- Valves are capable of mild throttling, and indicator plates are notched to hold the lever in the selected position.
- Full lever dimensional drawings can be found in the Powell Resilient Seated Buttery Catalog.
6.2 GEAR ACTUATED OPERATION
- Valves are equipped with position indicators to shown disc position.
- Gears are equipped with adjustable stops to properly align the open and closed position.
- Full gear dimensional drawings can be found in the Powell Resilient Seated Buttery Valve Catalog.
6.3 MOTOR AND PNEUMATIC ACTUATED OPERATION
Available upon request.
Valves must always be operated within the applicable pressure/temperature limits dened in Appendix A to avoid valve
damage and hazardous conditions.
Valve stems are marked with a line that indicates disc position in the event of removal of lever or gear.
2503 Spring Grove Avenue, Cincinnati, OH 45214 • 800.888.2583 • ww w.powellvalves.com
10
Resilient Seated Buttery Valve Manual Version A
Date June 30, 2020
7. REMOVAL
1. The pipeline is to be shut down and pressure relieved to ensure the valve is no longer under pressure and
it is recommended that uid also be drained from the system in the area of the valve. See Powell
“Handbook of Valve Information” section “First Consideration” for further precautions.
2. Rotate the stem until the valve is in the completely closed state (see section 6).
3. Loosen and remove the ange nuts as shown below in Figure 2.
4. Remove all ange studs.
5. Remove valve.
*WARNING*
Proper protection must be used in the removal of the valve if the line uid is hazardous or toxic, or valve
and piping must be decontaminated before removal.
Figure 2 - Valve Removal
2503 Spring Grove Avenue, Cincinnati, OH 45214 • 800.888.2583 • www.powellvalves.com 11
Resilient Seated Buttery Valve Manual Version A
Date June 30, 2020
APPENDIX A - VALVE SEAT MATERIAL SELECTION
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1
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2
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3
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4
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5
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6
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7
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8
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9
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10
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Powell Valves Resilient Seated Butterfly Valve User manual
- Type
- User manual
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