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This direct-acting valve is ideally suited for hydraulic applications where a relief valve needs to maintain high flow and cracking pressures in order to prevent system damage from pressure spikes. This pressure relief valve is packaged in a Line Removable Unit (LRU) for ease of installation and extraction. Minimum cracking pressures are available from 1000-5400 psid.
| Characteristic | Specification |
|---|---|
| Leakage at Minimum Cracking Pressure | 1 mL / Minute Maximum |
| Leakage at Minimum Shutoff Pressure | 1 mL / Minute Maximum |
| External Leakage | 0 mL |
| Restriction at Minimum Recommended Valve Lift | 600 Lohms |
| Nominal System Pressure | up to 5000 psi |
| System Peak Pressure | 6750 psi Maximum |
| Non-Relief Direction Differential Pressure | 500 psid Maximum |
| Nominal Weight | 200 grams |
| Test Fluid | MIL-PRF-83282 at 85°F |
| PART | MATERIAL | SPECIFICATION |
|---|---|---|
| Body | 304 CRES | AMS 5639 |
| Poppet Retainer | 304 CRES | AMS 5639 |
| Spring Seat | 304 CRES | AMS 5639 |
| Spring Seat Vent | 316L CRES | (SINTERED) |
| Spring Guide | 304 CRES | AMS 5639 |
| Seat | 15-5PH CRES | AMS 5659 |
| Piston | Nitronic 60 | AMS 5848 |
| Springs | 17-7PH CRES | AMS 5678 |
| Poppet | Polyimide | - |
| Piston Seal 1 | Viton | AMS-R-83485 |
| Piston Seal 2 | PTFE | AS 8791 |
This table below contains the part numbers and technical specifications for this product. If you have specific questions, need a quote, or would like to request a handbook or drawing, click the red request button in the column on the far right.
From plugs to solenoid valves, there’s a vast array of products that The Lee Company can offer. If you’d like to discuss the best solution for your specific application or to learn more about our capabilities, use-cases, or quality standards, contact your local Lee sales engineer.
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The Lee Company has developed the Lohm Laws for defining and measuring resistance to fluid flow. The Lohm is defined such that 1 Lohm will flow 100 GPM of water with a pressure drop of 25 psi at a temperature of 80°F.
Always verify flow calculations by experiment.
*There are many parameters to consider when determining V-Factor. Click here for more information.
