Diaphragm valve RG4 series
pneumatically-operatedflow controlpressure-control

diaphragm valve
diaphragm valve
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flow control, pressure-control
beverage, for dairy products, for chemical products
for the chemical industry, for the food industry, beverage, for hygienic applications, for pharmaceutical applications
Other characteristics

140 °C (284 °F)


145 psi, 232 psi, 363 psi


Min.: 25 mm (0.984 in)

Max.: 150 mm (5.906 in)


The RG4 modulating valve is designed for continuous flow and pressure control. It is equipped with a diaphragm actuator and positioner. Advantages •3-A approved •ATEX compliant models •Profile seals with ID markings that eliminate gaps and facilitate ordering of spares •Flexible design - the shaft and seat can be changed to accommodate changed Kvs values (fully developed modular system) •Easy to maintain - the valve insert can be lifted out completely •Valve design and testing according to DIN IEC 534 All stainless steel product contact parts are made of AISI 316L / DIN EN 1.4404 grade material. Available in nominal dimensions DN 25 – DN 150 and 1” – 4”. In addition, SPX FLOW offers RG4 modulating valves in noise reduced design. Modulating Valve Sizing Request || US Download the PDF form, complete and submit. A local SPX FLOW agent will be contacted with your valve sizing request. KEY APPLICATIONS Field of application All industries. For hygienic applications with flexible Kvs values. For aseptic applications the valve can be supplied with PTFE diaphragm, stainless steel bellow or steam barrier (RGMS4).


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*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.