MV5211 Control Valve SG Iron DN40 PN16/25
This valve series is available with a multi-spring diaphragm actuator which delivers excellent control performance in a compact package, designed around decades-proven and highly reliable diaphragm technology. The spring and diaphragm actuator provides an inherent fail-safe operation and can be alternated between direct and reverse acting functions. Standard positioners and a variety of accessories cleanly mount on this actuator.

This valve series is also available with a powerful piston actuator. This actuator provides high thrust for its size by taking advantage of higher air supply pressures. The piston actuator offers precise control performance, long-stroke capability, and stiffness that effectively buffers high fluid dynamic forces experienced in more extreme flow conditions. Standard positioners and a variety of accessories cleanly mount on this actuator.

Unlike competitors’ valves (which use the cage to compress the seat ring into the body), The diaphragm cage in the Modulating valve comes suspended in the body from a machined shoulder. This design eliminates bonnet gasket leakage, cage deformation, sticking plugs, seat gasket and body washout that can occur with cage-retained seat designs. The hung cage design utilises a 17-4 Ph stainless steel Belleville load ring to maintain constant seat gasket load, even in temperature cycling service.

These Modulating Control valves have been designed for a high-pressure drop service. Pressure drop, high velocities and throttling occur between the cage window and the plug, thereby protecting the seat ring and tight shutoff capability of the valve.

For Replacement Valves please Advise Voltage, Wnr, and Serial Number.

For new installation please download and complete the control valve questionnaire in the "DATASHEETS" Section and return it to [email protected]