Model 730-RV Diapgram Control Valve

For pressure reducing service, back pressure control or pressure relief on application handling de-ionized water, slurries, corrosive or abrasive liquids, or any service which requires a diaphragm type valve.

The assembly consists of a No. 630 air-operated diaphragm valve either normally open or normally closed as desired, a No. 60-P pressure pilot and optional No. 1725 chemical attachment, valve positioner and single or dual limit switches.

For back pressure control or pressure relief service a pressure sensing line is connected to the chemical attachment on the pressure pilot from a point upstream from the main valve.

For pressure reducing service the pressure sensing line must be from a point downstream from the main valve.