A linear-motion valve with a plug and seat arrangement designed for flow regulation and throttling. Characterized by an S-shaped or angle body flow path.
Primary Applications:
- Flow regulation in process piping
- Boiler feedwater control
- Steam and condensate systems
- Bypass lines around block valves
- Instrument isolation and throttling
Body Patterns:
- T-Pattern (Straight Pattern): Most common, used where pressure drop is acceptable
- Y-Pattern: Angled seat and stem reduce turbulence and pressure drop
- Angle Pattern: Inlet and outlet perpendicular, combines valve and elbow function
Disc Types:
- Flat Disc: General service
- Needle Disc: Fine flow regulation
- Parabolic/Contoured Disc: Extended throttling range
Typical Standards: API 602, API 623, BS 1873, ASME B16.34
Sizes: 1/2″ to 24″
Pressure Classes: 150# to 2500#
