Asahi America Ball Valves
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T-21 Ball Valve
(8) These valve performs an on/off or modulating function. Its name is derived from the flow-controlling ball valve located within the body of the valve. A hole through the center of the ball along one axis connects the inlet and outlet ports of the body. The ball itself is held in place by, and rotates 90º within, PTFE seats. These provide permanent lubrication, and keep the valve "bubble-tight." They are backed by elastomeric cushions, which provide pressure against the ball and, at the same time, compensate for wear. Elastomer O-rings are used for stem and carrier seals to prevent leakage to the atmosphere. In the open position, the flow is straight-through, and there is minimal pressure drop when the porting through the ball is the same size as the inside diameter of the pipe. Pic_T-21_Ball_Valve.jpg Omni Ball Valve
(6) Standard Features- Blocks in two directions
- Rugged structure
- Unibody construction
- Compact, low profile, short face-to-face dimensions
- PTFE seat backed by EPDM for low stem torque
- Rated for full vacuum service
Type 57 Butterfly Valves
(5) Standard Features- Standard model (1-1/2" - 14") has PVC body and PP disc for superior chemical resistance and elevated temperature capabilities
- 316/403 stainless steel shaft has full engagement over the entire length of the disc and is a non-wetted part
- Only solid and abrasion-resistant plastic disc and elastomeric liner are wetted parts
- ISO bolt circle on top flange-no body or stem modifications required for accessories
- Stem retainer-PP retainer to prevent stem removal
- Seat over tightening protection-Molded body stops and seat stress relief area
- Spherical disc design offers increased Cv, ultimate sealing and high cycle life
- 18 position throttle plate for lever handle style
