Created on 02/18/2016

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MODEL

DRAY

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

SERIES 1 / CAPACITY: 2 L/min. / CAVITY: T-21A

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.

TECHNICAL DATA

Maximum Operating Pressure 350 bar

Maximum Valve Leakage at Reseat 20 drops/min.

Reseat >85% of setting

Locknut Hex Size 15 mm

Locknut Torque 9 - 10 Nm

Seal kit - Cartridge Buna: 990-021-007

Seal kit - Cartridge Polyurethane: 990-021-002

Seal kit - Cartridge Viton: 990-021-006

(L)CONTROL

L Standard Screw Adjustment

C Tamper Resistant - Factory Set

(A)ADJUSTMENT RANGE

A 1000 - 3000 psi (70 - 210 bar), 1000 psi

(70 bar) Standard Setting

C 2000 - 6000 psi (140 - 420 bar), 2000

psi (140 bar) Standard Setting

(N)SEAL MATERIAL

N Buna-N

V Viton

MATERIAL/COATING

Standard Material/Coating

/AP Stainless Steel, Passivated

snhy.com/DRAY

TECHNICAL FEATURES

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.

PERFORMANCE CURVES

Model Code Example: DRAYLANCONFIGURATION OPTIONS