Dual Relief Valves 1DDR35

Product catalog summary

1DDR35 Series Dual Relief Valve Overview
The 1DDR35 Series Dual Relief Valve is a direct-acting, poppet-type valve designed to protect directional valves and actuators from shock or surge pressures. It is particularly useful in applications where changes in direction or sudden stops create excessive load conditions. The valve is of the cross-line type, allowing exhaust oil from one line to be transferred to the other, eliminating the need for a separate tank line and preventing cavitation when used with a closed center directional valve.

Specifications

Oil Temperature: 40°C
Viscosity: 40 cSt
Rated Flow: 30 litres/min (8 US GPM)
Max Pressure Setting: 350 bar (5000 psi)
Body Material: Standard aluminum (up to 210 bar), steel option available
Weight: 0.58 kg (1.28 lbs)
Seal Kit Number: SK243 (Nitrile), SK243V (Viton)
Recommended Filtration Level: BS5540/4 Class 18/13 (25 micron nominal)
Operating Temperature: -20°C to +90°C
Nominal Viscosity Range: 5 to 500 cSt

Features

Soft start and stop with fast-acting operation for maximum protection
Reduces plumbing requirements
Working parts are hardened and ground steel, with zinc-plated external surfaces

Ordering Information

Basic Code: 1DDR35 = Cartridge and Body
Adjustment Means: P = Leakproof Screw Adjustment, R = Handknob Adjustment, G = Tamperproof Cap
Port Sizes: 3W = 3/8’’ BSP, 6T = 3/8’’ SAE
Seals: S = Nitrile, SV = Viton

Pressure Range

10 = 7-100 bar, Standard setting 70 bar
20 = 35-210 bar, Standard setting 100 bar
40 = 50-400 bar, Standard setting 280 bar

Installation Notes

For single rod cylinders, anti-cavitation check valves and a separate tank line are necessary.
For applications above 210 bar, consult the technical department or use the steel body option.

Catalog excerpts

Body ONLY part numbers BSP, aluminium SAE, aluminium SAE, steel 3/8ԔB13988 3/8B11489 3/8ԔB11624 1DDR35 = Cartridge and Body S =Nitrile (For use with mostindustrial hydraulic oils) > SV =Viton (For high temperatureand most special fluid applications) P =Leakproof Screw Adjustment R =Handknob Adjustment G =Tamperproof Cap > 10 = 7-100 bar. Std setting 70 bar 3W =3/8蒒 BSP 6T =3/8Ғ SAE 20 =35-210 bar. Std setting 100 bar 40 =50-400 bar. Std setting 280 barStd setting made at 4.8 litres/min > We reserve the right to change specifications without notice

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Dual Relief Valves 1DDR35

Dual Relief Valves 1DDR35

Catalog excerpts

All Integrated Hydraulics catalogs and technical brochures