Diaphragm Valve Series Offers Improved Flow Performance and Reduced Energy Consumption

GF Piping Systems has introduced the Type 514-519 High Flow Diaphragm Valve Series, a uniquely designed valve that provides a true break-through for weir style valves.  The valve features an optimized, turbulence-free flow geometry that offers significantly increased flow rate performance and lower energy consumption.  These features expand the valve’s suitability for applications where diaphragm valves were previously not considered due to flow restriction.

The valve’s new flow geometry design provides Cv values that on average are more than

Type 514-519 High Flow Diaphragm Valve Series

Type 514-519 High Flow Diaphragm Valve Series

double those of a diaphragm valve with a traditional design. The modified geometry provides linear flow and control characteristics that improve processing stability, resulting in reduced operating costs and more cost-effective media transport.  A self draining feature minimizes dead space and achieves improved hygiene and better resistance to crystallizing fluids.

The innovative valve design also eliminates the need for metal bolts required to hold traditional valves together.  Instead, the bonnet is threaded directly onto the body, eliminating the need to re-torque the bolts due to thermal expansion.  With its metal-free threaded bonnet connection, corrosive build-up is minimized in applications with highly aggressive media.

The 5-Series Diaphragm Valve is available in PVC, CPVC, PP, PVDF, and ABS body materials in sizes 1/2-2” (with larger sizes available in the 317 Series).  Diaphragms are available in EPDM, PTFE, FPM and NBR.  This material range covers practically the entire spectrum of chemicals with which diaphragm valves can come into contact, optimizing process compatibility.   Standard PVC, CPVC, PP, PVDF and ABS versions can handle pressures up to 150 PSI. End connections include socket, spigot, and flanged.  Basic versions of the diaphragm valves are operated manually with a lockable handwheel for protection against unwanted adjustment. An optional integrated electrical feedback unit can be quickly retrofitted, enabling piping system regulation and reliable process monitoring.

Additional design features include rounded contours with smooth transitions and radii, which provide less abrasion and noise emission.  Color coding on the housing nut and on the housing itself allow easy indication of pressure rating and diaphragm material. A two-color position indicator, which is clearly visible from a distance, shows the actual valve position.

The new valve family can be pneumatically actuated with the DIASTAR Ten and DIASTAR Ten Plus actuators from GF Piping Systems.  Modular design allows easy field maintenance and installation of position feedback switches, electro‑pneumatic positioners and other accessories.

The new valve series is suitable for extremely contaminated media, media containing particulates, or high purity liquids in a variety of applications for industries ranging from chemical process, microelectronics, paper manufacturing, offshore platforms, and water treatment.


For complete information on GF’s line of 514 diaphragm valves, please contact the expert RHFS customer service staff at 800-848-1141.