Brass Globe Valves

hort Specification

Usmani valves Globe valves are used mainly for steam or other media where a throttling service is required. The seat design gives an advantage for doing this by utilising its globe shape as it comes down to connect with the seat effectively cutting the flow gradually up until it seals completely on the seat face. This however does cause a larger pressure drop than say a gate valve and causes turbulence in the line. The size pressure class and material selection of all globe valves are the responsibility of the user or system designer. Process Systems may offer suggestions in this area however the selection process is solely the responsibility of the end user or plant operator.

Installation
Globe valves are unidirectional whereby they are only designed to take the flow in one direction under the disc. There is an arrow of direction cast into the valve body but can easily be checked by looking into one end of the valve and see whether you are looking at the underside of the seat or above the seat. It is recommended that the valve be mounted vertically only whereby the hand wheel operation will be at the top of the valve. This ensures that no premature wear or damage will occur to the valve. The main installation points are below