Rotary-valve design provides shearing action between the V-notch ball and the seat, promoting a smooth, non-clogging operation.
Straight-through flow design provides high capacity for fluids.
With a single-seat design, torque is lower than typical trunnion design valves, for ease of operation and reduced actuator cost.
Two seat designs:
- Laminated seat provides ASME/FCI 70-2 class IV shut-off and withstands tough operating conditions.
- Thick (solid) seat for high-velocity and abrasive or erosive service.
Choice of full and reduced port, providing the right flow capacity for every application at low cost.
Machined ISO 5211 top mounting flange (VA series only).
Heavy-duty, stainless steel shaft for high strength and rigidity.
Multiple, adjustable ring packing allows easy adjustment without valve disassembly or actuator removal.
Shaft bearings assure a durability, smooth and easy valve operation.
Positive alignment of split body.
The spline connection minimizes the backlash of shaft and disk. It results excellent control performance.