Swagelok SS-CHF4-1/3 stainless steel poppet check valve is designed to control back flow in general-service and high-purity applications. This fixed pressure valve features a 1/3 psi (0.03 bar, 0.003 MPa) cracking pressure and delivers reliable performance with a maximum flow coefficient (Cv) of 0.67.

Specifications

Specification	Value
Body Material	316 Stainless Steel
O-Ring Material	Fluorocarbon FKM
Backup Ring Material	PTFE
Connection 1 Size	1/4 in.
Connection 1 Type	Female NPT
Connection 2 Size	1/4 in.
Connection 2 Type	Female NPT
Cracking Pressure	1/3 psi (0.03 bar, 0.003 MPa)
Room Temperature Pressure Rating	6000 PSIG @ 100°F / 413 BAR @ 37°C
CV Maximum	0.67
Cleaning Process	Standard Cleaning and Packaging (SC-10)
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)	40141641

Safety and Compatibility

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. The complete catalog contents must be reviewed to ensure that the system designer and user make a safe product selection. Function, material compatibility, adequate ratings, proper installation, operation, and maintenance are the responsibilities of the system designer and user.