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This miniature check valve is only 0.25 inches in diameter and 0.78 inches in length. This valve features an economical ball-style design allowing free flow in one direction and preventing flow in the other direction. It is ideal for applications with flow rates up to 1.8 GPM. An integral safety screen is available for increased protection against contamination.
| Characteristic | Specification |
|---|---|
| Cracking Pressure | 5 ± 3 or 1 ± 0.5 psid |
| Maximum Leakage in Checked Direction at 5 psid | 1 Drop / Minute |
| Maximum Leakage in Checked Direction at 1000-3000 psid | 1 Drop / Hour |
| Lohm Rate at 20 psid and Greater | Unscreened: 175 Lohms Screened: 235 Lohms |
| Nominal System Pressure | Up to 3000 psi |
| Nominal Weight | Unscreened: 3.8 grams Screened: 4.5 grams |
| Available Screen Hole Size | 0.008 inches Nominal |
| Test Fluid | MIL-PRF-83282 at 85°F |
| PART | MATERIAL | SPECIFICATION |
|---|---|---|
| Body | 303 CRES | QQ-S-763C |
| Pin | 303 CRES | QQ-S-763C |
| Spring | 17-7PH CRES | AMS 5678 |
| Ball | 440C CRES | AMS 5630 |
| Ball Follower | 303 CRES | QQ-S-763C |
| Spring Seat | 303 CRES | QQ-S-763C |
| Cage | 303 CRES | QQ-S-763C |
| Screen (Screened Versions Only) | 304L CRES | ASTM A 666 |
| Braze (Screened Versions Only) | — | AMS 4774 |
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 |
|---|---|
| CUTA2500106C | Installation / Extraction Tool Set |
| CKFA2500003A | Replacement Pin |
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.
