Swagelok SS-4C-1/3 stainless steel poppet check valve is designed to control back flow in general-service and high-purity applications. This model features 1/4 inch Swagelok tube fitting end connections on both ports and is configured with a fixed cracking pressure of 1/3 psig (0.03 bar).

Built with 316 stainless steel for superior durability and corrosion resistance, the valve utilizes a Fluorocarbon FKM O-ring for reliable sealing performance. It is rated for pressures up to 3000 PSIG (206 BAR) at room temperature and undergoes standard cleaning and packaging (SC-10) to meet industry requirements.

Technical Specifications

Specification	Detail
Body Material	316 Stainless Steel
Cleaning Process	Standard Cleaning and Packaging (SC-10)
Connection 1 & 2	1/4 in. Swagelok® Tube Fitting
Cracking Pressure	1/3 psi (0.03 bar, 0.003 MPa)
Maximum Cv	0.47
O-Ring Material	Fluorocarbon FKM
Pressure Rating	3000 PSIG @ 100°F / 206 BAR @ 37°C
Surface Finish	Standard
Testing	No Optional Testing

Safety Information

When selecting products, the total system design must be considered to ensure safe, trouble-free performance. Function, material compatibility, adequate ratings, proper installation, operation, and maintenance are the responsibilities of the system designer and user. Do not mix or interchange Swagelok products or components with those of other manufacturers.

Regulatory and Classification Data

• eClass (10.1): 27300601
• UNSPSC (15.1): 40141641
• UNSPSC (17.1001): 40183101