Swagelok SS-4C-KZ-30 stainless steel poppet check valve features 1/4 in. Swagelok tube fittings, a 30 psig (2.1 bar) fixed cracking pressure, and a Kalrez O-ring for reliable performance.

Specifications
Body Material	316 Stainless Steel
Cleaning Process	Standard Cleaning and Packaging (SC-10)
Connection 1 Size	1/4 in.
Connection 1 Type	Swagelok® Tube Fitting
Connection 2 Size	1/4 in.
Connection 2 Type	Swagelok® Tube Fitting
Cracking Pressure	30 psi (2.1 bar, 0.21 MPa)
CV Maximum	0.47
O-Ring Material	Kalrez O-Ring
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)	40183101

Fixed Pressure

Control back flow in general-service and high-purity applications with Swagelok check valves available in a range of adjustable and fixed cracking pressures.

System Safety and Compatibility

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.

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.