Brand Hydraulics PLS755T4JRSH Owner's manual

Brand: Brand Hydraulics

Model: PLS755T4JRSH

Type: Owner's manual

Brand Hydraulics PLS755T4JRSH is a 4-way directional control valve with hydraulic kick out, designed primarily for log splitters. It features a manually adjustable handle that provides fine metering to either port. The valve has a rated flow of 0-18 gpm (0-68.1 lpm) and a rated pressure of 3000 psi (207 bar). It is made of cast iron and has Buna N O'Rings, an IOSSO plated steel spool, and a black nylon ball knob.

02-08 Page D-9

Certificate #02.002.1

ISO 9001:2000 WITH DESIGN

LS755T4JRSH

4 – WAY DIRECTIONAL CONTROL VALVE WITH

HYDRAULIC KICK OUT

“LS”

FEATURES:

STANDARD SINGLE HYDRAULIC KICK OUT with non-adjustable kick-out.

OPTIONAL SINGLE HYDRAULIC KICK OUT with adjustable kick-out.

OPTIONAL DOUBLE HYDRAULIC KICK OUT is not recommended for log splitters.

SMALL AND COMPACT to fit your design requirements.

FINE POSITIVE METERING in either direction with the manually adjustable handle.

PRECISION GROUND IOSSO PLATED SPOOL that assures long life.

SPECIFICATIONS:

Rated 0-18 gpm (0-68.1 lpm).

Rated for 3000 psi (207 bar).

Weighs 5-1/2 lbs. (2.5 kg).

30 – Micron filtration recommended.

Standard port sizes.

-Inlet/Outlet 3/4” NPT and work ports

1/2” NPT

MATERIALS:

Cast Iron Body

Buna N O’Rings

IOSSO Plated Steel Spool

Black Nylon Ball Knob

Page D-10

4-way Directional Control

LS – GENERAL INFORMATION:

The Brand, LS 4-way directional control valve is designed primarily for log splitters. The manual

adjustable handle provides fine metering to either port. Port flow is directly proportional to the movement

of the lever. The tank port must be plumbed directly back to tank.

SPOOL TYPE – The spool types we offer are tandem center 4-way (T4), open center 4-way (O4) and

closed center 4-way (C4). (See chart and schematics for more information on spool types).

HANDLE OPTION – Lever handle (J) pressurizes A port when the handle is pushed towards the valve

body (clevis below spool). Lever handle (L) pressurizes A port when the handle is pulled away from valve

body (clevis above spool). No actuator (M) J type spool.

ATTACHMENTS – Spring center hydraulic detent (SH) springs back to neutral from one position and

pressure release detent in the other direction when the cylinder completes its return stroke (P to A in detent

and 800-1000 psi (55 to 69 bar) kick-out). Spring center hydraulic detent (SHA) springs back to neutral

from one position and pressure release detent in the other direction with adjustable kick-out (P to A in

detent and 800 psi kick-out setting). Hydraulic detent in both directions (HHA) pressure release detent in

both directions and springs to center when out of detent (Not recommended for log splitters). Adjustable

relief (R) set to 2000 psi (138 bar) at factory.

LS – EXAMPLES OF COMMON MODEL CODES:

LS755C4JRSH……….... 3/4” NPT inlet/outlet, 1/2” NPT work ports, closed center 4-way spool, J-style

actuator, adjustable relief set at 2000 psi (138 bar), and spring center one

direction hydraulic detent in other direction with non-adjustable kick-out.

LS755C4JRSHA………..3/4” NPT inlet/outlet, 1/2” NPT work ports, closed center 4-way spool, J-style

actuator, adjustable relief set at 2000 psi (138 bar), and spring center one

direction hydraulic detent in other direction with adjustable kick-out.

LS755T4JRHHA……..... 3/4” NPT inlet/outlet, 1/2” NPT work ports, tandem center 4-way spool, J-style

actuator, adjustable relief set at 2000 psi (138 bar), and hydraulic detent in both

directions.

LS – CREATING A MODEL CODE FOR LS’S:

L S 7 5 5 __ __ __ __

LS – COMPLETE LIST OF OPTIONS AND ACCESSORIES:

LSJRHH-K…………..… Seal kit for LS with HHA spool action.

LSJRSH-K……………... Seal kit for LS with SHA spool action.

LSJRS-K………...……... Seal kit for LS with SH spool action.

LS-RK………..…….…... Kick-out assembly with spool for SH spool action.

SPOOL TYPE:

T4 – Tandem center 4-way

O4 – Open center 4-way

C4 – Closed center 4-way

HANDLE OPTION:

J – J-style lever handle (clevis below spool)

L – J-style lever handle (clevis above spool)

M – No actuator (J type spool)

SPOOL ACTION:

SH – Spring center / hydraulic detent (Non-adjustable)

SHA – Spring center / hydraulic detent (Adjustable)

HHA – Hydraulic detent in both directions

RELIEF:

Omit – No relief

R – Adjustable relief (2000 psi (138 bar)factory setting)

Page D-11

4-way Directional Control

A B

Tandem Center 4-way (T4) - Powers cylinder or

motor in both directions. Pump unloads to tank

when spool is in neutral. Cylinder or motor

blocked when spool in neutral.

Open Center 4-way (O4) - All of the ports are

connected to tank when the spool is in neutral.

Allows cylinder to move or motor to rotate

when spool is in neutral.

P T

Closed Center 4-way (C4)- All ports are blocked

in neutral. Blocks cylinder or motor in neutral.

Required for use with pressure compensated

pump.

P T

A B

Pressure Drop vs. Flow

1.0 3.0 6.0 9.0 12.0 15.0 18.0 20.0

Flow (gpm)

Pressure Drop (psi)

0.0

0.3

0.7

1.0

1.4

1.7

2.1

2.4

2.8

3.1

3.8 11.4 22.7 34.1 45.4 56.8 68.1 75.7

Flow (lpm)

Pressure Drop (bar)

P to A or B, and A or B to T

Neutral Flow (T4 Spool)

Pressure vs. Flow for LS Relief (R)

500

1000

1500

2000

2500

3000

3500

1.0 3.0 6.0 9.0 12.0 15.0 18.0 20.0

Flow (gpm)

Pressure (psi)

0.0

34.5

68.9

103.4

137.9

172.4

206.8

241.3

3.8 11.4 22.7 34.1 45.4 56.8 68.1 75.7

Flow (lpm)

Pressure (bar)

B505 Spring

Relief is set at 6 gpm

7.29" [185.2]

0.71" [18.1]

0.25" [6.4]0.25" [6.4]

8.23" [209.0]

1.00" [25.4]

2.44" [62.0]

1.06" [26.9]

2.12" [54.0]

3.94" [100.0]

1.20" [30.6] 2.24" [56.8]

5.44" [138.2]

9.10" [231.1]

ADJUSTABLE RELIEF (2000 PSI (138 BAR) FACTORY SETTING)

NOTE: KICK-OUT ON SH MODELS IS NON-ADJUSTABLE

AND HAS A KICK-OUT RANGE OF 800-1000 PSI (55-69 BAR)

2.19" [55.5]

B PORT

A PORT

3X Ø0.27" [Ø6.7]

LS – FLOW AND PRESSURE INFO:

SPOOL SCHEMATICS:

DIMENSIONAL DATA (LS755T4JRSH SHOWN): inches & [millimeters]

Brand Hydraulics PLS755T4JRSH Owner's manual

Brand: Brand Hydraulics

Model: PLS755T4JRSH

Type: Owner's manual

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Brand Hydraulics PLS755T4JRSH Owner's manual

Brand Hydraulics PLS755T4JRSH Owner's manual

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