Swagelok 6L-CW4S4 is a 316L stainless steel high-purity check valve designed for general-service and high-purity applications. This model features 1/4 in. Swagelok tube fitting end connections and is processed with SC-11 special cleaning and packaging to meet stringent cleanliness requirements. With a fixed cracking pressure of 2 psi (0.14 bar), it provides reliable backflow control while maintaining a maximum flow coefficient (Cv) of 0.55.

Technical Specifications

Feature	Specification
Body Material	316L Stainless Steel
Cleaning Process	Special Cleaning and Packaging (SC-11)
Connection Size	1/4 in.
Connection Type	Swagelok® Tube Fitting
Cracking Pressure	2 psi (0.14 bar, 0.014 MPa)
CV Maximum	0.55
Pressure Rating	3000 PSIG @ 100°F (206 BAR @ 37°C)
Seal Material	Fluorocarbon FKM
Surface Finish	Ra 20 μin (0.51 μm)
Wetted Surface Roughness	20 μin. (0.51 μm) average, machine finished

High Purity Cleaning

The SC-11 cleaning process ensures the valve is suitable for high-purity environments where surface finish and contamination control are critical. The wetted surfaces are machine-finished to an average roughness of 20 μin. (0.51 μm).

Fixed Pressure Backflow Control

This valve is part of the Swagelok fixed cracking pressure series, designed to control backflow effectively in a variety of systems. The fixed pressure design ensures consistent performance without the need for field adjustment.

System Safety

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 to maintain design integrity and safety.

Industry Identifiers

• eClass (10.1): 27292001
• UNSPSC (15.1): 40141609