Trunnion Mounted Ball Valve
Trunnion Mounted Ball Valve
The Bray Series 1B Trunnion Mounted Ball Valve is designed for reliability and safety in critical applications, featuring a range of advanced features to ensure optimal performance under challenging operating conditions. Available in sizes from 2 – 24” (50 – 600mm) and temperature ranges from -50 to 600°F (-45 to 315° C). This zero-leakage solution is designed to API 6D and certified to API 607 an
Trunnion Mounted Ball Valve
Internal Trunnion Design
Upper and lower bearing plates ensure the ball and stem are centered. This compact design prevents the ball from floating axially, avoiding excess load on the seats increasing cycle life. Additionally, external trunnion designs are available in certain sizes.
Trunnion Mounted Ball Valve
Seat Configurations
The Bray Series 1B offers both a metal and soft seat materials. Both Single Piston Effect (SPE), and Double Piston Effect (DPE) configurations are available. Bray also offers Double Block and Bleed (DBB) and Double isolation and bleed valve (DIB) seat configurations.
Trunnion Mounted Ball Valve
Double Seals on Body Joint
Primary elastomeric seals ensure zero leakage in standard operating conditions. Secondary graphite seals ensure proper body joint sealing per API 607 in extreme temperature scenarios.
Trunnion Mounted Ball Valve
Pressure Energized Stem Packing
The energizer ring located above the primary o-ring stem seal provides insurance in the rare occasion the o-ring is damaged. The energizer ring would use the media pressure to create an upward compressive force on the packing. This upward force on the packing is combined with the downward compressive force created by tightening the packing gland. This results in a larger net compressive force on the packing and better seal than a typical packing design.
Trunnion Mounted Ball Valve
Firesafe Design
Secondary metal seat design provides a firesafe shut off per API 607. Additionally, secondary graphite body seals and flexible graphite packing prevents leakage through the body joints and stuffing box, respectively.
Trunnion Mounted Ball Valve
Emergency Stem and Seat Sealant Injection
The Emergency Stem Sealant Injection allows for the injection of sealant into the stem housing, creating a secondary seal to protect against pressure spikes. The Emergency Seat Sealant Injection provides a similar function at the valve’s end connections, creating a positive seal in case of seat leakage due to impurities or operating pressure fluctuations.
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