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| | | 1AR SERIES RELIEF VALVE PILOT OPERATED (ISO CAVITY NUMBER: 7789-20-1-0-90) 1AR60 SLIDING SPOOL TYPE 1 _ | | |
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| | | APPLICATION To limit pressure in a system. Good for continuous duty and accurate pressure control with constant or varying flows. | | FEATURES High accuracy of pilot operated design. Hardened working parts give long, reliable, trouble-free life. Cartridge construction for installation into your own manifold. | | |
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| | | OPERATION When the inlet pressure exceeds the setting of the valve, the pilot section opens, causing a small flow across the orifice in the main spool. The subsequent pressure drop moves the spool against a light spring opening a ring of radial holes in the sleeve, allowing relief flow to tank. | | SPECIFICATIONS Figures based on: Oil Temp = 40°C Viscosity = 40 cSt | | |
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| | | | | | | | | | Rated Flow | 60 litres/min (16 US GPM) | | | | Max Setting | 350 bar (5000 psi) | | | | Cartridge Material | Working parts hardened and ground steel. External surfaces zinc plated | | | | Body Material | Standard aluminium (up to 210 bar*) Add Suffix '377' for steel option | | | | Mounting Position | Unrestricted | | | | Cavity Number | CVA20-01-0 (See Section 17) | | | | Torque Cartridge into Cavity | 45 Nm (33 lbs ft) | | | | Weight | 1AR60 0.18 kg (0.4 lbs) 1AR65 0.36 kg (0.8 lbs) 1AR66 0.48 kg (1.0 lbs) | | | | Seal Kit Number | SK613 (Nitrile) SK613V (Viton) | | | | Recommended Filtration Level | BS5540/4 Class 18/13 (25 micron nominal) | | | | Operation Temp | -20°C to +90°C (Standard seals) | | | | Leakage | 35 millilitres/min nominal | | | | Nominal Viscosity Range | 5 to 500 cSt | | | | | | | | | |
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| | | PRESSURE DROP | | |
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| | | FLOW-US GPM _10_ | | |
| | | 5 | | | 15 | | 20 | | |
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| | | 400 350 300 J 250 ; 200 : 150 100 50 | | |
| | | 6000 | | |
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| | | 5000 | | |
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| | | 4000 | | |
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| | | 3000 | | |
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| | | 2000 | | |
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| | | 1000 | | |
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| | | 0 | | |
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| | | 0 | | 15 | | 30 45 FLOW LITRES/MIN | | |
| | | 75 | | |
| | | 60 | | |
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| | | *For applications above 210 bar please consult our technical department or use the steel body option. Integrated Hydraulics Ltd Integrated Hydraulics Inc Collins Road, Heathcote Ind. Est., Warwick, CV34 6TF, UK. 7047 Spinach Drive, Mentor, Ohio 44060, USA Tel: +44 (0) 1926 881171 Fax: +44 (0) 1926 315729 Tel: (440) 974 3171 Fax: (440) 974 3170 Website: www.integratedhydraulics.com Website: www.integratedhydraulics.com | | |
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