FKB Ball Valve — Updated Pressure Ratings
We are pleased to inform you that the 6FKB and 8FKB series two-way and 6FKB three-way ball valves now have increased pressure ratings up to 20,000 PSIG (1378 Bar) with cone and thread or medium-pressure tube fitting end connections. Valves with NPT connections up to and including 1/2 in. remain at 15,000 PSIG (1034 Bar) and those with NPT connections larger than 1/2 in. remain at 10,000 PSIG (689 Bar). The 12FKB remains unchanged.
Working pressure ratings are determined based on ASME B31.3 Process Piping, Chapter IX High Pressure Piping Calculations. The chart below provides ratings based on valve size and type.
|Valve Orifice Size in. (mm)||Working Pressure psig (bar)|
|0.209 (5.31)||20 000 (1378)|
|0.375 (9.52)||20 000 (1378)||15 000 (1034)|
|0.560 (14.2)||15 000 (1034)||N/A|
- Order through your local Authorised Sales & Service Center (Swagelok Kazakhstan)
- Download Catalogue MS-02-472 — Swagelok Medium- and High-Pressure Fittings, Tubing, Valves and Accessories is updated and includes details on the above enhancements.
Product Test Reports
- Download PTR-4067 — Cycle Test of Stainless Steel Swagelok FKB Series Medium-Pressure Ball Valves at 20,000 psig (1378 bar)
- Download PTR-4068 — Thermal Cycle Test of Stainless Steel Swagelok FKB Series Medium-Pressure Ball Valves at 20,000 psig (1378 bar)