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SUN HYDRAULICS CORP
DRAYLAN
Directional

Cartridge

$171.40

SUN HYDRAULICS CORP

MATERIAL:  DRAYLAN

SUMMARY:  Cartridge

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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 T-21A
Series 1
Capacity .5 gpm2 L/min.
Maximum Operating Pressure 5000 psi350 bar
Maximum Valve Leakage at Reseat 20 drops/min.20 drops/min.
Reseat >85% of setting>85% of setting
Valve Hex Size 7/8 in.22,2 mm
Valve Installation Torque 30 - 35 lbf ft41 - 47 Nm
Adjustment Screw Internal Hex Size 5/32 in.4 mm
Locknut Hex Size 9/16 in.15 mm
Locknut Torque 80 - 90 lbf in.9 - 10 Nm
Model Weight .30 lb0,15 kg
Seal kit - Cartridge Viton: 990-021-006

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