Swagelok SS-53F4 is a 316 stainless steel lift check valve designed for reliable reverse flow limitation in high-pressure and high-temperature industrial applications. This 53 series valve features a 0.30 Cv flow coefficient and 1/4 inch female NPT (FNPT) end connections on both ports.

Performance Ratings

This lift check valve is engineered for demanding environments, offering significant pressure and temperature capabilities:

• Maximum Pressure: 6000 psig (413 bar) at 100°F (37°C).
• Maximum Temperature: Up to 900°F (482°C).

Design Features

Swagelok lift check valves incorporate a unique bonnet design that utilizes gravity to limit reverse flow. This passive safety mechanism ensures consistent performance without complex internal actuation.

Specifications

Feature	Specification
Body Material	316 Stainless Steel
Connection 1	1/4 in. Female NPT
Connection 2	1/4 in. Female NPT
Flow Coefficient (Cv)	0.30
Surface Finish	Standard
Cleaning	Standard Cleaning and Packaging (SC-10)

System Safety

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.