

Wafer Type
Swagelok SS-16C4-1 Stainless Steel Poppet Check Valve with fixed cracking pressure of 1 psig. Features 1 in. FNPT connections for general-service applications.

Swagelok SS-16C4-1 Stainless Steel Poppet Check Valve provides a fixed cracking pressure of 1 psig (0.07 bar). It is designed to control back flow in general-service and high-purity applications, featuring a 316 stainless steel body and 1 in. female NPT connections.
| Specification | Value |
|---|---|
| Body Material | 316 Stainless Steel |
| Cleaning Process | Standard Cleaning and Packaging (SC-10) |
| Connection 1 Size | 1 in. |
| Connection 1 Type | Female NPT |
| Connection 2 Size | 1 in. |
| Connection 2 Type | Female NPT |
| Cracking Pressure | 1 psi (0.07 bar, 0.007 MPa) |
| CV Maximum | 4.48 |
| O-Ring Material | Fluorocarbon FKM |
| Room Temperature Pressure Rating | 2000 PSIG @ 100°F /137 BAR @ 37°C |
| 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.
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