Hydraulic Valves

ZAYTRAN Flow Control Valves

Style

Model and Size

Flow

Control Method

Features

Applications

TV

1600-1" 2400-1½" 3200-2" 4800-3"

Adjustable

Manual

Manual adjustment with low torque at full pressure is provided by a balanced spool. The multi-turn handle provides a precise and repeatable readout of the valve opening from fully closed to fully opened.

Cylinder, test stand, and large motor circuits that require precise control of high volume flow.

TVA

3200-2"

High/Low

Hydraulic Pilot

Two pre-set flows are selected via hydraulic pilot operation.

Circuits that require two pre-set flows for large motors, cylinders and speed control.

TVS

3200-2" 4800-3"

Variable

Servo Valve** W/Feedback Transducer

High flow volume is continuously monitored and may be controlled by transducer feedback of the spool position.

Fine control of large cylinders. Often used on injection molding and die casting shot control.

TVSR

3200-2" 4800-3"

Variable

Servo Valve**

A rapid and precise flow is delivered in response to the servo control valve.

Flow or pressure may be controlled via a customer supplied transducer.

ZAYTRAN On-Off Valves

Style

Model and Size

Flow

Control Method

Features

Applications

TVD

1600-1"

On or Off

Cam

A biased spool provides positive shut-off.

Coolant control. Usually transfer line or deep hole drilling. Also for flow throttling on low pressure circuits.

TVDP

1600-1" 2400-1½" 3200-2" 4800-3"

On or Off

Hydraulic Pilot Operated Open & Closed

Positive turn-on and shut-off are assured by a balanced spool and ground seat.

High flow control circuits in die casting and press circuits that require fast valve response.

TVRNC

1600-1" 2400-1½" 3200-2" 4800-3"

On or Off

Hydraulic Pilot Operated Open, Normally Closed

Positive turn-on and shut-off are assured by a biased spool.

Accumulator and other circuits that require positive shut-off when no pilot pressure is available.

TVT

2400-1½"

On or Off

Solenoid Valve** Operated

Fast, high-flow response is developed under control of a directional valve.

Remote on-off operation of high flow circuits via directional control valve.

ZAYTRAN Check Valves

Style

Model and Size

Flow

Control Method

Features

Applications

TVPC

3200-2"

Pilot Check

Hydraulic Pilot of Check To Open

Positive shut-off is provided in the check direction, with minimum pressure drop in the free flow direction.

Locking circuits where reverse flow must be prevented in presses and casting equipment.

TVPCD

3200-2"

Pilot Check

Hydraulic Pilot of Check To Open

Same as above. However, the check is decompressed.

Locking circuits where reverse flow must be allowed at times

** = Servo or Solenoid control valves are not supplied by ZAYTRAN. However, the ZAYTRAN valves have standard porting patterns for ease of application with no external control plumbing.