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This threadless, cartridge safety poppet pressure relief valve is designed to provide fast opening rates, stable flows, low hysteresis, quiet operation, and high cracking pressures. The 5.5 mm relief valve’s locking end uses the field-proven Lee Controlled Expansion Principle to provide secure retention and eliminate the need for threads, O-rings, or secondary retainers. This direct-acting relief valve features all stainless steel construction, making it compatible with a wide range of fluids. The valve is 100% functionally tested to ensure performance.
| Characteristic | Specification |
|---|---|
| Full Open Lohm Rate | 650 Lohms |
| Uprun Leakage | Valve will flow less than 1.0 cc/min at 90% of nominal cracking pressure |
| Flow Point | Valve flow point at 125% of nominal cracking pressure |
| Reseat | Valve will flow less than 0.05 LPM at 88% of nominal cracking pressure |
| Maximum Working Pressure Checked Direction | 280 bar |
| Maximum Working Pressure Differential Flow Direction | 280 bar |
| Installation Force | 625 kgf (max) |
| COMPONENT | MATERIAL |
|---|---|
| Body | 303 Stainless Steel |
| Stop | 416 Stainless Steel |
| Pin | 416 Stainless Steel |
| Spring | 17-7 Stainless Steel |
| Poppet | 416 Stainless Steel |
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.
| PART NUMBER | DESCRIPTION |
|---|---|
| CCRT0900120S | 5.5 mm Installation Tool |
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.
