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This threadless, cartridge safety pressure relief valve offers superior flow capacity for its size. 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 valve features all stainless steel construction and a high quality metal seat to deliver low leakage, repeatable cracking pressure, fast response time, low hysteresis, and long life. The valve is 100% functionally tested to ensure performance.
| Characteristic | Specification |
|---|---|
| Lohm Rate | 150 Lohms |
| Leakage | 10 SCCM (max) at 172 kPa (25 psid) on Air |
| Maximum Working Pressure Checked Direction | 280 Bar |
| Maximum Working Pressiure Differential Flow Direction | 40 Bar |
| Installation Force | 625 kgf (max) |
| COMPONENT | MATERIAL |
|---|---|
| Body | 303 Stainless Steel |
| Cage | 305 Stainless Steel |
| Pin | 416 Stainless Steel |
| Spring | 302 Stainless Steel |
| Ball | 440C 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 | 558 Series 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.
