This improves the valves’ suitability for applications where diaphragm valves were previously not considered due to flow restriction.
The Type 514-519 from GF Piping Systems features a new flow geometry design which provides Cv values double the traditional design with values ranging from 3.9 to 116.8, depending on size and end connection. This provides linear flow and control characteristics that improve processing stability, resulting in reduced operating costs and more cost-effective media transport. There is a self-draining feature to minimise dead space and improve hygiene and resistance to crystallizing fluids.
This new design means that traditional metal bolts are not required to hold the valve together. Instead, the top-works are 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 Diaphragm Valve Series is available in PVC, CPVC, PP, PVDF, and ABS body materials in sizes 1/2-2" (with larger sizes available in the 314-319 Series). Diaphragms are available in EPDM, PTFE, FPM and NBR. This material range covers practically the entire spectrum of chemicals with which the diaphragm valves can come into contact, optimizing process compatibility. Standard PVC, CPVC, PP, and ABS versions handle pressures up to 150 PSI while PVDF versions handle pressures up to 240 PSI.
The new valve family can be completely automated with GF Piping Systems' Pneumatic Actuators DIASTAR 10 (150 PSI) and DIASTAR 16 (240 PSI). The valve is suitable for extremely contaminated media, media containing solids, and high purity liquids for a variety of applications such as chemical process industry to microelectronics, water treatment, cooling and control.
