

Swagelok SS-4C1-1/3 stainless steel poppet check valve with a fixed 1/3 psi cracking pressure, 1/4 in. MNPT x 1/4 in. tube fitting, and 3000 psig rating.

Swagelok SS-4C1-1/3 is a 316 stainless steel poppet check valve designed to control back flow in general-service and high-purity applications. It features a fixed cracking pressure of 1/3 psi (0.03 bar, 0.003 MPa) and provides a maximum flow coefficient (Cv) of 0.47.
This fixed pressure check valve is configured with a 1/4 in. male NPT connection and a 1/4 in. Swagelok® Tube Fitting connection, equipped with a Fluorocarbon FKM O-ring. It delivers a room temperature pressure rating of 3000 PSIG at 100°F (206 BAR at 37°C) for dependable system isolation.
| Specifications | |
|---|---|
| Body Material | 316 Stainless Steel |
| Cleaning Process | Standard Cleaning and Packaging (SC-10) |
| Connection 1 Size | 1/4 in. |
| Connection 1 Type | Male NPT |
| Connection 2 Size | 1/4 in. |
| Connection 2 Type | Swagelok® Tube Fitting |
| Cracking Pressure | 1/3 psi (0.03 bar, 0.003 MPa) |
| CV Maximum | 0.47 |
| O-Ring Material | Fluorocarbon FKM |
| Room Temperature Pressure Rating | 3000 PSIG @ 100°F /206 BAR @ 37℃ |
| Surface Finish | Standard |
| Testing | No Optional Testing |
| eClass (4.1) | 37010801 |
| eClass (5.1.4) | 27300400 |
| eClass (6.0) | 27300601 |
| eClass (6.1) | 27300601 |
| eClass (10.1) | 27300601 |
| UNSPSC (4.03) | 40141622 |
| UNSPSC (10.0) | 40141641 |
| UNSPSC (11.0501) | 40141641 |
| UNSPSC (13.0601) | 40141641 |
| UNSPSC (15.1) | 40141641 |
| UNSPSC (17.1001) | 40183101 |
WARNING
Do not mix/interchange Swagelok products or components not governed by industrial design standards, including Swagelok tube fitting end connections, with those of other manufacturers.