Swagelok SS-58S8 Lift Check Valve
The Swagelok SS-58S8 is a 316 stainless steel lift check valve with 1/2 inch Swagelok tube fitting ends on both sides. A unique bonnet design uses gravity to limit reverse flow with no springs or elastomers required. The all-stainless construction is rugged enough for service to 6000 psig and 900 degrees F, with reverse flow coefficient less than 0.1 percent of forward flow.
Key Features
- All-stainless steel, all-metal construction (no springs, no elastomers)
- Gravity-actuated bonnet design limits reverse flow
- Reverse flow coefficient less than 0.1% of forward flow coefficient
- 2.20 Cv with 0.437 in. (11.1 mm) orifice
- Rated to 6000 psig (413 bar) and up to 900 F (482 C)
- Standard Cleaning and Packaging (SC-10)
Technical Specifications
- Part Number: SS-58S8
- Brand: Swagelok
- Type: Lift Check Valve (fixed, gravity-operated, all-metal)
- Body Material: 316 Stainless Steel (body)
- End Connections: 1/2 in. Swagelok tube fitting (both ends)
- Orifice: 0.437 in. (11.1 mm) (per 50 Series catalog MS-01-98)
- Flow Coefficient (Cv): 2.20
- Working Pressure: 6000 psig @ 100 F (413 bar @ 37 C)
- Temperature Rating: Up to 900 F (482 C)
- Seat Material: COMING SOON
- Spring: Not applicable – no springs (gravity-operated, all-metal design)
- Cracking Pressure: COMING SOON
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