full20_33701Valve_CTRV

Choosing The Right Valve


Category: .
Choose your valve, that best matches cylinder, pump and application.

STEP 1 Select the hydraulic cylinder that best suits the application.
STEP 2 Select the series of hydraulic pump with adequate oil output and reservoir capacity to power cylinder.
STEP 3 Select pump within series with the valve option that best matches cylinder, pump and application.

CONSIDERATIONS:

  • Will the valve be used with single or double-acting cylinder?
  • Will the valve be mounted on the pump, away from the pump or directly into the hydraulic lines?
  • Will the valve be manually operated or is remote control preferred?
  • Is independent control of multiple cylinders, or hydraulic tools preferred?
  • What directional control and pressure control valve functions are needed for the application?

Basic valve types include manually operated, air or solenoid operated and pilot operated. Special application valves for pre-stressing and post-tensioning are also offered.

IN-LINE HYDRAULIC VALVES

Load Lowering Valve – Provides precision metering for controlled return of the cylinder pistion.

Sequence Valve – Used when a cylinder in a multiple cylinder application must advance before any other.

Pressure Reducing Valve – Permits independent pressure control to two or more clamping systems operated by a single power source.

Shut-off Valve – For fine metering of hydraulic oil. Several may be used to control multiple single-acting cylinders.

Check Valve – Permits flow of hydraulic oil in one direction only.

Pressure Relief Valve – Used at remote location in a hydraulic circuit where maximum pressure requirements are less than the setting of the basic overload valve in the pump. Protects a hydraulic system against over pressurization.

Metering Valve – Restricts surges by restricting flow to a certain level; when flow subsides, valve reopens automatically. For systems using large cylinders or extended lengths of hose.

Pressure Regulator Valve – Permits external adjustment of operating pressures at various values below the internal relief valve setting of the pump.

DIRECTIONAL CONTROL VALVES

2-WAY, 2-POSITION
(FOR CONTROL OF SINGLE-ACTING CYLINDERS):

POSITION 1 CENTER POSITION POSITION 2
Directional Control Valve (Pump to Port A) – Diagram
Oil goes from pump to cylinder; pressure is held from valve to cylinder when pump is shut off.
None. Directional Control Valve (Pump to Port A) – Diagram
Oil goes from cylinder to pump; pressure is released to reservoir when motor is turned off.

3-WAY, 2-POSITION
(FOR CONTROL OF SINGLE-ACTING CYLINDERS):

POSITION 1 CENTER POSITION POSITION 2
Directional Control Valve (Pump to Port A) – Diagram
Oil goes from pump to cylinder and holds when pump is shut off. Return line to reservoir is blocked.
None. Directional Control Valve (Pump and Port A to Tank) – Diagram
Cylinder retracts, oil returns to reservoir.

3-WAY, 3-POSITION
(FOR CONTROL OF SINGLE-ACTING CYLINDERS):

POSITION 1 CENTER POSITION POSITION 2
Directional Control Valve (Pump to Port A) – Diagram
Oil goes from pump to cylinder and holds when pump is shut off. Return line to reservoir is blocked.
Directional Control Valve (Pump to Tank; Port A blocked) – Diagram
Cylinder pressure is held; pump can remain running and oil returns to reservoir.
Directional Control Valve (Pump and Port A to Tank) – Diagram
All oil is open to reservoir through return line.

4-WAY, 2-POSITION
(FOR CONTROL OF SINGLE OR DOUBLE-ACTING CYLINDERS):

POSITION 1 CENTER POSITION POSITION 2
Directional Control Valve (Pump to Port A; Port B to Tank) – Diagram
Oil goes to the « extend » side of the cylinder. The oil from the « retract » side returns to reservoir. Cylinder holds with pump shut off.
None. Directional Control Valve (Pump to Port B; Port A to Tank) – Diagram
Oil goes to the « retract » side of the cylinder, oil from the « extend » side returns to reservoir.

4-WAY, 3-POSITION
(FOR CONTROL OF DOUBLE-ACTING CYLINDERS):

POSITION 1 CENTER POSITION POSITION 2
Directional Control Valve (Pump to Port A; Port B to Tank) – Diagram
Oil goes to the « extend » side of the cylinder, oil from the « retract » side returns to reservoir. Cylinder holds with pump shut off.
Directional Control Valve (Pump to Tank; Port A and Port B blocked) – Diagram
Holds pressure even if pump is running. Oil from pump goes through valve, back to reservoir.
Directional Control Valve (Pump to Port B; Port A to Tank) – Diagram
Oil goes to « retract » side of cylinder. Oil from « extend » side returns to the reservior.

TYPICAL CENTERS:

TANDEM CENTER CLOSED CENTER OPEN CENTER
Directional Control Valve (Pump to Tank; Port A blocked) – Diagram
Cylinder ports are blocked, oil from pump goes to reservoir. Used when pump remains running. Example: gasoline-driven pumps.
Directional Control Valve (Pump, Port A, Port B, and Tank bllocked) – Diagram
Generally used when running multiple valves in series from one pump.
Directional Control Valve (Pump to Port A; Port B to Tank) – Diagram
Open Center used when holding is not a requirement, as when running two separate hydraulic tools such as cutters and crimpers.

Choosing the Right Valve: Selection Information - Pump Mounted Valve – Diagram
Order No. Cylinder
Application *
Operation Valve Type Volt Advance/
Return
Advance/
Hold Return
Posi-Check® Feature Weight (lbs.)
9500 S.A. & D.A. Manual 4-way, 3 Pos. Tandem Center — No Yes No 4.2
9501 S.A. & D.A. Manual 4-way, 3 Pos. Closed Center — No Yes No 4.2
9502 S.A. Manual 3-way, 3 Pos. Closed Center — No Yes Yes 4.2
9504 S.A. & D.A. Manual 3/4-way, 2 Pos. — Yes Yes No 4.2
9506 D.A. Manual 4-way, 3 Pos. Tandem Center — No Yes Yes 5.1
9507 D.A. Manual 4-way, 3 Pos. Closed Center — No Yes Yes 5.0
9511 S.A. & D.A. Manual 4-way, 3 Pos. Open Center — Yes Yes No 4.2
9512 D.A. Solenoid 4-way, 3 Pos. Tandem Center 24 No Yes Yes 18.1
9513 D.A. Solenoid 4-way, 3 Pos. Tandem Center 115 No Yes Yes 18.1
9516 D.A. Solenoid 4-way, 3 Pos. Tandem Center 12DC No Yes Yes 18.1
9517 S.A. Manual 2-way, 2 Pos. — No Yes No 3.2
9519 D.A. Solenoid 4-way, 3 Pos. Tandem Center 230 No Yes Yes 18.1
9520 S.A. Manual 4-way, 3 Pos. Tandem Center — No Yes Yes 5.1
9522 D.A. Solenoid 4-way, 3 Pos. Open Center 230 Yes No No 15.5
9523 S.A. Pilot Operated Solenoid 3-way, 2 Pos. 230 Yes No No 8.2
9552 S.A. & D.A. Solenoid 3/4-way, 2 Pos. 230 Yes No No 14.6
9553 S.A. Pilot Operated Solenoid 3-way, 2 Pos. 24 Yes No No 8.2
9569 S.A. Solenoid 3-way, 2 Pos. 24 No Yes No 9.6
9570 S.A. Solenoid 3-way, 2 Pos. 230 No Yes No 9.6
9572 S.A. & D.A. Solenoid 3/4-way, 2 Pos. 24 Yes No No 14.6
9576 S.A. Manual 3-way, 3 Pos. Metering Tandem Center — No Yes No 8.5
9579 S.A. Solenoid 3-way, 2 Pos. 115 No Yes No 9.6
9582 S.A. Manual 3-way, 2 Pos. — No Yes No 2.5
9584 S.A. Manual 3-way, 2 Pos. — No Yes No 1.8
9589 S.A. Pilot Operated Solenoid 3-way, 2 Pos. 115 Yes No No 8.2
9590 D.A. Solenoid 4-way, 3 Pos. Open Center 115 Yes No No 15.5
9592 S.A. & D.A. Solenoid 3/4-way, 2 Pos. 115 Yes No No 14.6
9594 S.A. & D.A. Air 3/4-way, 2 Pos. — No Yes Yes 11.0
9599 S.A. Pilot Operated Solenoid 3-way, 3 Pos. Tandem Center 24 No Yes Yes 14.0
9605 S.A. Pilot Operated Solenoid 3-way, 3 Pos. Tandem Center 115 No Yes Yes 14.6
9609 S.A. Pilot Operated Solenoid 3-way, 3 Pos. Tandem Center — No Yes No 8.7
9610 S.A. Auto Pilot Operated 3-way, 2 Pos. — Yes No No 4.2
9610A S.A. Manual 2/3-way, 2 Pos. — No Yes No 4.4
9615 D.A. Solenoid 4-way, 3 Pos. Open Center 24 Yes No No 15.5
9628 S.A. & D.A. Manual Post Tensioning — Special No No 5.4
9632 S.A. & D.A. Manual Post Tensioning — Special No No 13.6
* “S.A.” represents single-acting cylinders, “D.A.” represents double-acting cylinders

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