New Globe Valve Type Series from GEMÜ

The two new valve types use the same valve bodies. As a first step nominal sizes DN 15-50 are available with valve bodies in 1.4408 cast stainless steel and GGG 40.3 (EN-GJS-400-18-LT) S.G. iron. This new development of the valve bodies enabled considerable material and weight saving whilst offering the same stability. The cv values have also been improved by up to 40% com-pared to existing valve type 512.

The maximum operating pressure for sizes DN 15 - 40 is 25 bar, for DN 50 16 bar. The standard version can be used up to 180°C. The new PTFE gland packing for type 530 is steam resistant and suitable for vacuum applications as standard. Versions for higher temperatures and with other seals are available on request. Connections available are flanges to EN 1092/PN 16 form B, length EN 558-1, series 1 and flanges to the same standard for PN 25.

The actuators used were taken from the modular globe valve range. The
stainless steel actuator of the GEMÜ 550 angle seat globe valve is available for GEMÜ 530, the plastic actuator of the GEMÜ 554 angle seat globe valve is used for GEMÜ 534. The stainless steel actuator is particularly suitable for
applications in a chemically corrosive environment. For applications where the plants are regularly foamed with corrosive cleaning agents, a special venting valve for the actuator is available as an option. It prevents the
penetration of media into the actuator.

All nominal sizes can be equipped with regulating cones for flow control. The valves can then be used as control valves in combination with GEMÜ
positioners and process controllers. An extensive range of accessories and
instrumentation leaves hardly anything to be desired even in fully automated plants. The new valves have an excellent price/performance ratio and will be available in February 2008.