While gate valves and knife gate valves share many similar characteristics, there are several fundamental differences that set them apart.While knife gate valves and gate valves share many similarities – they’re both found in on-off applications, involving slurries along with other viscous media – there are many noteworthy design variances to contemplate when weighing up what sort of valve at stvvalves should be suited for the application.

The flow rate of your globe valve depends upon the space involving the disc plus the seat. The further apart these are, the greater liquid that can flow from the valve.Globe valves are designed with a stem coupled to the bonnet right across the disc to keep a tight seal if your valve is fully closed. Because of that, globe valves are not as likely to experience seat leakage in comparison with other valves.

These valves can also become control valves and so are commonly used for corrosive, highly viscous media in addition to high-pressure and high-temperature systems.Solid wedge is most commonly encountered & trusted disk types simply because of its simplicity and strength. A valve with solid wedge could possibly be installed in any position, in fact it is suitable for nearly all fluids. It can be employed in turbulent flow also.

However, it won't compensate for modifications to seat alignment because of pipe loads or thermal expansion. So, such type of disk design is most subject to leakage. Solid wedge is confronted with thermal locking if utilised in high-temperature service.

Thermal locking is often a phenomenon by which wedge is stuck involving the seats on account of the expansion of the metal. Solid-wedge gate valves are generally utilized in moderate to reduce pressure-temperature applications.