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This miniature check valve is only 0.187 inches in diameter and 0.66 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 2.2 GPM. An integral safety screen is available for increased protection against contamination.
| Characteristic | Specification |
|---|---|
| Cracking Pressure | 5 ± 3 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 25 psid and Greater | Unscreened: 140 Lohms Maximum Screened: 150 Lohms Maximum |
| Nominal System Pressure | Up to 4000 psi |
| Nominal Weight | Unscreened: 1.0 grams Screened: 1.5 grams |
| Test Fluid | MIL-PRF-83282 at 85°F |
| PART | MATERIAL | SPECIFICATION |
|---|---|---|
| Body | 17-4PH CRES | AMS 5643 |
| Pin | 17-4PH CRES | AMS 5643 |
| Spring Seat | 17-4PH CRES | AMS 5643 |
| Spring Guide | 304 CRES | AMS 5639 |
| Ball Follower | 304 CRES | AMS 5639 |
| Ball | 440C CRES | AMS 5630 |
| Springs | 17-7PH CRES | AMS 5678 |
| Screen (Screened Version Only) | 304L CRES | ASTM A 666 |
| Braze (Screened Version Only) | — | AMS 4774 |
| Post (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 | HOLE SIZE (inches) |
|---|---|---|
| CUTA1870306C | Valve Insert Installation / Extraction Tool Set | - |
| CUTA1870228C | Screen Installation / Extraction Tool Set | - |
| CKFA1870004A | Replacement Pin | - |
| FSSA1870040B | Replacement Screen | 0.004 |
| FSSA1870060B | Replacement Screen | 0.006 |
| FSSA1870080B | Replacement Screen | 0.008 |
| FSSA1870150B | Replacement Screen | 0.015 |
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.
