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Model

DRAYLAN

Control
Adjustment Range
Seal Material
Material/Coating

2-way, pilot-to-shift directional valve with drain to port 4 - normally open

Cavity: T-21A | Capacity:

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Model

DRAYLAN

Control
Adjustment Range
Seal Material
Material/Coating

Technical specifications

The normally-open, direct-acting 2-way directional cartridge with external drain is a pilot unloading valve used to sense pressure in one circuit to switch or unload a valve in a different circuit. When pressure at port 1 exceeds the setting of the valve, the spool shifts to block port 2 from port 3.

  • The pilot area (port 1) and the spring chamber drain (port 4) are positively sealed.
  • There is spool leakage between the work ports (ports 2 and 3)of less than 20 drops/min (1,4 cc/min).
  • The valve is designed to not modulate and is the equivalent of a hydraulic pressure switch.
  • Incorporates the Sun floating style construction to minimize the possibility of internal parts binding due to excessive installation torque and/or cavity/cartridge machining variations.
  • Cavity
  • Series
  • Capacity
    .5 gpm
  • Maximum Operating Pressure
    5000 psi
  • Maximum Valve Leakage at Reseat
    20 drops/min.
  • Reseat
    >85% of setting
  • Valve Hex Size
    7/8 in.
  • Valve Installation Torque
    30 - 35 lbf ft
  • Adjustment Screw Internal Hex Size
    5/32 in.
  • Locknut Hex Size
    9/16 in.
  • Locknut Torque
    80 - 90 lbf in.
  • Model Weight
    .30 lb
  • Seal kit - Cartridge
  • Seal kit - Cartridge
  • Seal kit - Cartridge

Model CAD Files

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Symbol CAD Files

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  • How big is a drop of hydraulic oil?  
  • Where would I use a DR__ instead of a DP__?
  • I used a DP** in a circuit but it hangs. What happened?
  • Direct acting or pilot operated - what do I use?

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