MODEL

RPIT

Anti Shock, pilot operated, balanced poppet relief valve

SERIES 3 / CAPACITY: 380 L/min. / CAVITY: T-16A

Pilot-operated, anti shock relief cartridges limit maximum system pressure and also limit the rate of pressure rise.

The valve opens and then ramps closed at a constant speed, independent of settings and flows. The adjust screw

U.S. Patent # 6,039,070

Pressure Ramp Up Time 300 - 500 ms

Adjustment - Number of Clockwise Turns to Increase Setting 4.5

Locknut Hex Size 15 mm

Locknut Torque 9 - 10 Nm

Seal kit - Cartridge Buna: 990-316-007

Seal kit - Cartridge Viton: 990-316-006

(L)CONTROL

L Standard Screw Adjustment

C Tamper Resistant - Factory Set

(A)ADJUSTMENT RANGE

/AP Stainless Steel, Passivated

TECHNICAL FEATURES

All 2-port relief cartridges (except pilot reliefs) are physically and functionally interchangeable (same flow path, same cavity for a given frame size).

Will accept maximum pressure at port 2; suitable for use in cross port relief circuits.

Not suitable for use in load holding applications.

When pressure at the inlet (port 1) exceeds the threshold setting, the valve opens to tank (port 2). The pilot section moves forward at a steady rate, increasing the

setting by compressing the pilot spring. Maximum setting is achieved when the pilot section reaches a mechanical stop.

Valve provides protection for pumps and motors from pressure transients due to sudden load changes, especially variable displacement pumps, since the

displacement mechanism is sometimes too slow to catch these pressure transients.

Valve provides protection for hydrostatic drives by reducing the jerk caused by sudden reversals. The valve is suitable for cross-port applications.

NOTES