Solenoid operated pilot relief assembly

Function

Function for XRGA: Normally Closed
Normally Closed
Function for XRGA: Normally Open
Normally Open
Port Designators [ + ]
Modifiers Ports
4, 4/S Ports 1 & 2: 1" Code 62; Port G: 1/4" NPTF;
4/M, 4/T Ports 1 & 2: 1" Code 62; Port G: 1/4" BSPP;
5, 5/S Ports 1 & 2: 1 1/4" Code 62; Port G: 1/4" NPTF;
5/M, 5/T Ports 1 & 2: 1 1/4" Code 62; Port G: 1/4" BSPP;
D, D/S Ports 1 & 2: 3/4" NPTF; Port G: 1/4" NPTF;
E, E/S Ports 1 & 2: 1" NPTF; Port G: 1/4" NPTF;
F, F/S Ports 1 & 2: 1 1/4" NPTF; Port G: 1/4" NPTF;
L, L/S Ports 1 & 2: SAE 12; Port G: 1/4" NPTF;
M, M/S Ports 1 & 2: SAE 16; Port G: 1/4" NPTF;
N, N/S Ports 1 & 2: SAE 20; Port G: 1/4" NPTF;
P, P/S Ports 1 & 2: 1" Code 61; Port G: 1/4" NPTF;
P/M, P/T Ports 1 & 2: 1" Code 61; Port G: 1/4" BSPP;
Q, Q/S Ports 1 & 2: 1 1/4" Code 61; Port G: 1/4" NPTF;
Q/M, Q/T Ports 1 & 2: 1 1/4" Code 61; Port G: 1/4" BSPP;
W, W/S Ports 1 & 2: 3/4" BSPP; Port G: 1/4" BSPP;
X, X/S Ports 1 & 2: 1" BSPP; Port G: 1/4" BSPP;
Y, Y/S Ports 1 & 2: 1 1/4" BSPP; Port G: 1/4" BSPP;
Technical Features [ + ]

This valve assembly provides 2 functions. It relieves from pressure (port 1) to tank (port 2) when pressure at port 1 exceeds the setting of the valve. The solenoid control allows the valve to be vented, dropping the pressure to a minimal level. This assembly is available in both normally open H option, normally closed C option, as well as an empty pilot control cavity. The normally open option means the pressure is at a low level until the solenoid is energized. The normally closed option means the pressure is at a high level until the solenoid is energized.

  • Not suitable for use in load holding applications due to spool leakage.
  • Back pressure on the tank port (port 2) is directly additive to the valve setting at a 1:1 ratio.
  • This assembly is well suited to loading and unloading a pump.
  • The nature of a vented relief is that it brings the pressure up in a smooth manner. Unloading is abrupt.
Technical Data [ + ]
Body Type Line mountLine mount
Capacity 60 gpm240 L/min.
Mounting Hole Thread .375-16 UNC - 2B in..375-16 UNC - 2B in.
Mounting Hole Quantity 22
FAQs [ + ]

There are exactly 250 Sun drops in a cubic inch or 15 in a cc.

Direct-acting valves are used to prevent over pressure, and pilot-operated valves are used to regulate pressure. If you are unsure, use a direct-acting valve. Sun's direct acting valves are very fast, dirt tolerant, stable, and robust. Sun's pilot-operated valves are moderately fast, they have a low pressure rise vs. flow curve, and they are easy to adjust.

Notes [ + ]
  • Important: Carefully consider the maximum system pressure. The pressure rating of the manifold is dependent on the manifold material, with the port type/size a secondary consideration. Manifolds constructed of aluminum are not rated for pressures higher than 3000 psi (210 bar), regardless of the port type/size specified.
  • For detailed information regarding the cartridges contained in this assembly, click on the models codes shown in the Included Components tab.
Additional Resources [ + ]
Coil Information [ + ]

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