Swagelok SS-CHS2-1/3 is a high-performance poppet check valve constructed from 316 stainless steel, designed for reliable backflow control in general-purpose and high-purity applications. This model features 1/8 in. Swagelok tube fitting connections on both ends and is rated for working pressures up to 6000 psig (413 bar) at room temperature. The valve utilizes a fluorocarbon FKM O-ring and a PTFE back-up ring to ensure seal integrity across its operating range.

With a fixed cracking pressure of 1/3 psig (0.03 bar), this CH series valve provides precise opening characteristics and a maximum flow coefficient (Cv) of 0.67. The unit is processed using Swagelok's Standard Cleaning and Packaging (SC-10) protocol, ensuring suitability for a wide range of industrial fluid systems.

Technical Specifications

Specification	Details
Body Material	316 Stainless Steel
Pressure Rating	6000 psig @ 100°F (413 bar @ 37°C)
Connection Type	Swagelok® Tube Fitting
Connection Size	1/8 in.
Cracking Pressure	1/3 psig (0.03 bar, 0.003 MPa)
Maximum Cv	0.67
O-ring Material	Fluorocarbon FKM
Back-up Ring	PTFE
Cleaning Process	Standard Cleaning and Packaging (SC-10)

Material Construction

The SS-CHS2-1/3 utilizes high-grade materials for durability and media compatibility:

• Body: 316 Stainless Steel
• Seal: Fluorocarbon FKM O-ring
• Support: PTFE back-up ring
• Surface Finish: Standard industrial finish

Application Note

Swagelok check valves are designed to control backflow in diverse environments. Proper system design, including material compatibility and pressure ratings, is essential for safe, leak-free performance. Avoid mixing Swagelok components with products from other manufacturers to maintain system integrity.