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This miniature check valve is only 0.187 inches in diameter and 0.62 inches in length. This valve features a poppet-style design to maximize the free flow in one direction and prevent flow in the other direction. It is ideal for applications with flow rates up to 3 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 1000-4000 psid | 1 Drop / Hour |
| Lohm Rate at 15 psid and Greater | Unscreened: 100 Lohms Screened: 140 Lohms |
| Nominal System Pressure | Up to 4000 psi |
| Nominal Weight | Unscreened: 1.4 grams Screened Forward: 1.8 grams Screened Reverse: 1.55 grams |
| Available Screen Hole Size | 0.015 inches Nominal |
| Test Fluid | MIL-PRF-83282 at 85°F |
| PART | MATERIAL | SPECIFICATION |
|---|---|---|
| Body | 304 CRES | AMS 5639 |
| Pin | 17-4PH CRES | AMS 5643 |
| Poppet | 15-5PH CRES | AMS 5659 |
| Spring | 17-7PH CRES | AMS 5678 |
| Spring Seat | 304 CRES | AMS 5639 |
| Screen (Reverse Screened Version Only) | 303 CRES | QQ-S-763C |
| Screen (Forward Screened Version Only) | 304L CRES | ASTM A 666 |
| Braze (Forward Screened Version Only) | — | AMS 4774 |
| Post (Forward Screened Version Only) | 303 CRES | QQ-S-763C |
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 |
|---|---|
| CUTA1870110C | Installation / Extraction Tool Set |
| CKFA1870005A | Replacement Pin |
| CUTA1870228C | Forward Screen Installation / Extraction Tool Set |
| FSSA1870150B | Replacement Forward Screen |
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.
