Swagelok SS-CHF4-1/3 is a fixed pressure stainless steel poppet check valve designed to control back flow in general-service and high-purity applications. It features 1/4 in. female NPT connections and operates with a fixed cracking pressure of 1/3 psig (0.03 bar) with a maximum working pressure of 6000 psig at room temperature.

Specifications

Specification	Value
Backup Ring Material	PTFE
Body Material	316 Stainless Steel
Cleaning Process	Standard Cleaning and Packaging (SC-10)
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)
CV Maximum	0.67
O-Ring Material	Fluorocarbon FKM
Room Temperature Pressure Rating	6000 PSIG @ 100°F / 413 BAR @ 37°C
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

System Design and Safety

The complete catalog contents must be reviewed to ensure that the system designer and user make a safe product selection. 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.

Intermix / Interchange Hazard

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.