serves as efficient stop valve with flow in either direction. They are commonly used where a minimum of pressure drop is important because they offer practically no resistance to flow when fully open. Throttling is not conducive to accurate and consistent flow control. Also the valve may be damaged by the high velocity across the seats. They function best fully open or fully closed.
API 800, 1500
ANSI 150, 300, 600, 900, 2500, 4500
3/8", 1/2", 3/4", 1", 11/4", 11/2", 2"
ASTM A105, A182-F5, A182-F9, A182-F11, A182-F22, A182-F304, A182-F316, A182-F304L, A182-F316L, A182-F321, A182-F347, A182-F51, A182-F91, A350-LF2
Other Materials also Available on Application
Socket welding, threaded Butt welding, flanged
Bolted bonnet or welded bonnet
Outside screw & yoke