Swagelok SS-XSS4-1 is a 316 stainless steel excess flow valve designed to protect systems by stopping the uncontrolled release of media in the event of a downstream line rupture. This valve features 1/4 inch Swagelok tube fitting connections and is equipped with a 1 gal/min (3.8 L/min) spring trip range.

Design and Operation

The excess flow valve utilizes a slotted poppet mechanism. During normal operation, the poppet remains open. When an excess flow condition occurs downstream—such as a line break—the poppet moves to the tripped position to restrict flow. The valve automatically resets once the system pressure equalizes across the poppet.

Technical Specifications

Specification	Detail
Body Material	316 Stainless Steel
Connection 1	1/4 in. Swagelok® Tube Fitting
Connection 2	1/4 in. Swagelok® Tube Fitting
Maximum Cv	0.5
Spring Trip Range	1 U.S. gal/min (3.8 L/min)
Cleaning	Standard Cleaning and Packaging (SC-10)
UNSPSC (15.1)	40141600
eClass (6.0)	22560307

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.

Component Compatibility

Do not mix or interchange Swagelok products or components with those of other manufacturers, including Swagelok tube fitting end connections, unless governed by industrial design standards.