Swagelok SS-4CP5-25 is a stainless steel 1-piece poppet check valve designed for precise backflow control in general-service and high-purity fluid systems. This model features a factory-set fixed cracking pressure of 25 psig (1.8 bar) and is constructed from high-grade 316 stainless steel. The integrated poppet design ensures reliable performance with a maximum flow coefficient (Cv) of 0.35, while the Fluorocarbon FKM O-ring provides excellent chemical resistance and sealing integrity. It is rated for 3000 psig (206 bar) at room temperature (100°F).

Technical Specifications

Attribute	Specification Details
Body Material	316 Stainless Steel
Connection 1 Size / Type	1/4 in. Male NPT
Connection 2 Size / Type	1/4 in. Female NPT
Cracking Pressure	25 psi (1.8 bar, 0.18 MPa)
Maximum Cv	0.35
O-Ring Material	Fluorocarbon FKM
Pressure Rating @ 100°F (37°C)	3000 PSIG (206 BAR)
Cleaning Process	Standard Cleaning and Packaging (SC-10)
Surface Finish	Standard

Key Features

• Fixed Cracking Pressure: Provides consistent opening behavior at 25 psig for system protection and directional control.
• General Service & High Purity: Engineered to handle a wide range of media in both standard industrial and high-purity environments.
• One-Piece Construction: Compact poppet valve design reduces potential leak points and simplifies installation.

Identification Codes

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

Selection Note

Proper product selection requires consideration of the total system design, including material compatibility, adequate ratings, and installation requirements to ensure safe, trouble-free performance.