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This miniature, zero-leak check valve is only 0.187 inches in diameter and 0.63 inches in length. This check valve utilizes an elastomeric seat material to provide zero leakage in the checked direction. It is ideal for pneumatic and hydraulic applications with flow rates up to 0.8 GPM. An integral safety screen is available for increased protection against contamination.
| Characteristic | Specification |
|---|---|
| Cracking Pressure | 5 ± 3 psid |
| Lohm Rate | 400 Lohms Max Restriction When Fully Open |
| Leakage in Checked Direction | Zero Leakage From 5-3000 psid |
| Nominal System Pressure | Up to 3000 psi |
| Nominal Weight | Unscreened Configurations: 2.3 grams Screened Configurations: 2.7 grams |
| Available Screen Hole Size | 0.015 inches Nominal |
| Test Fluid | Air at 70°F |
| PART | MATERIAL | SPECIFICATION |
|---|---|---|
| Body | 304 CRES | AMS 5639 |
| Cage | 304 CRES | AMS 5639 |
| Poppet | 15-5PH CRES | AMS 5659 |
| Seat | 15-5PH CRES | AMS 5659 |
| Springs | 17-7PH CRES | AMS 5678 |
| Pin | 17-4PH CRES | AMS 5643 |
| Elastomeric Seat Option 1 | Fluorocarbon | AMS-R-83485 or AMS-R-83248 |
| Elastomeric Seat Option 2 | EPDM | MIL-R-83285 |
| Screen (Reverse Screened Version Only) | 303 CRES | AMS 5640 |
| Screen (Forward Screened Version Only) | 304L CRES | AMS 5647 |
| Braze (Forward Screened Version Only) | — | AMS 4774 |
| Post (Forward Screened Version Only) | 303 CRES | AMS 5640 |
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 | Valve Insert Installation / Extraction Tool Set |
| CSFA1870003A | 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.
