This valve assembly provides 2 functions. It provides cross-port relief protection between ports 1 and 2. The solenoid valve vents both relief valves, dropping the pressure to a minimal level. This assembly is available in both normally open and normally closed options. The normally open H option means the pressure is at a low level until the solenoid is energized. The normally closed C option means the pressure is at a high level until the solenoid is energized.

• The two ports marked 1 are common as are the two marked 2. The high pressure relief that is physically on the same side as port 1 controls the pressure on port 2 and vice versa.
• 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.

Additional Resources

• Integrated Packages: Solutions That Grow Your Reputation
• Manufacturing Sun Cartridge Cavities
• Custom Integrated Packages from Sun
• Fluid and Temperature Recommendations
• Sun's Floating Style Screw-In Cartridge
• Sun Model Code Explanation; 999-901-334

• 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.

Related Files

Download