LOV range of high pressure parallel Slide Gate valves is primarily designed for isolation of steam and feed water as well as many other applications.
A parallel slide gate valve seat achieves tightness by utilising the line pressure, rather than by mechanical effort which can be the case with a wedge gate valve design.This eliminates the possibility of binding which may occur with a wedge gate valve as a result of large temperature fluctuations within the valves during service.
The effort required to seal a parallel slide gate valve is therefore much reduce over that required to seal a wedge gate valve. This is an advantage when fitting actuators with the parallel slide design allowing smaller sized actuators to be used, reducing in cost savings.
A parallel slide valve is ideally suited to in-line maintenance with the re-machining of all internal components being on centre and with the seat faces only needing to normally parallel.