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            Emergency shut-off valve
            
				Dateline:2014-11-30    Hits:
				
				
            A, use and performance specification:
            This valve is a safety protective valve, installed in the liquefied petroleum gas (gas),liquid and gas pipeline, and supporting the use of long distance gas source, the use of gas control valve open close, so that occurs in a pipe or tank large leak even when the fire started, the fast manual so that the gas source pressure relief, or high temperature is greater than or equal to 75%%p5C%%D when the fusible alloy melts,while the cylinder automatic pressure relief, rapid closure of the valve and the leakage stopping, play the role of security protection.
            The working principle, control two
            The valve air entrance installed by a two position three way electromagnetic valve,electrical appliances using a remote console control valve switch.
            1 gas leak alarm alarm energized, solenoid valve exhaust, the valve is automatically closed.
            2 manual control solenoid valve (press the red clip) exhaust, the valve is automatically closed.
            Three: the main performance specifications
            The pressure cylinder working pressure rating of 2.5/4.0Mpa is less than or equal to 2.0Mpa
            Using the temperature of -40~+80 DEG C cylinder using the medium nitrogen ` dry air
            Using the medium of natural gas, liquefied gas, the closing time of plus or minus 70 DEG C melting
            Closing time less than 5 seconds to open the cylinder pressure is greater than or equal to 0.5-0.7Mpa
            Four main parts: material
            Parts name material
            The valve body valve cover of carbon steels
            Cylinder, piston nodular cast iron
            O type sealing ring, Sichuan PTFE, NBR
            Spring 50CrVA (Dan Huanggang)
            Pneumatic emergency cut off valve installation size
            The maximum flow DN-JIS L: L / Max.FIoW/min
            Mm in
            251 "160160
            32 1-1/4 "200400
            40 1-1/2 "200400
            502 "240640
            803 "2831600
            1004 "3052500
            1506 "4033300
            2008 "5025900

            				 
				
			
            
		
            

            



            


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