1. Introduction Shut-off valve system is mainly used on each floor of hospital or on the gas entrance port of the operation room, to adjust gas pressure into regulated pressure scope, mean while it may open or shut off gas pipes to repair or maintain gas equipment.
The shut-off valve system has two functions: To reduce gas pressure and to shut off gas pipes. To reduce gas pressure is to control gas pressure within certain pressure scope, for instance to control the Ward’ O2 pressure to be within 0.3-0.5Mpa, or to control High-pressure O2 Cabin’s O2 pressure within 0.6-0.8 Mpa (Usually the pressure of manifold or O2 generator is 0.8-1.0Mpa. ). O2/CA/N2O usually need shut-off valve system while vacuum station and AGSS do not need this device.
Shut-off valves are linear ball valves. Usually the valves are installed in front of the pressure reducer and connected in series with pressure reducer and gas pipe. A branch gas pipe shall be added onto the main gas pipe to avoid gas supply failure in case any breakdown occurs in shut off valves or pressure reducer.
In China, most of the gas pressure alarm switches are electron pressure meters. Electron pressure meters are also installed into secondary pressure reduce valve system and connected with gas alarm system by 3-core electirc wire. Gas alarm system are usually installed in nurse station while secondary pressure reduce valve system is usually installed in each floor of hospital. Secondary pressure reduce valve system can be designed into 1 to 7 medical gas modules. Secondary pressure reduce valves box made up fo stainless steel and being nicely paintied, the front window of the box made by transparent glasses which can be broken for emergency situation.
2. Technical Parameter Electron pressure meter voltage Specs of pressure reducer Specs of shut-off valves Specs of copper pipe
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