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    Stop valve for dark bar ammonia
    
				Dateline:2014-11-30    Hits:
				
				
    Product performance specification for Products Perfomance specification
    A, use and performance specification
    Pressure rating at room temperature test pressure (Mpa)
    Housing sealing seal test
    Nominal pressure (Mpa) 1.6 2.4 1.76 1.76
    2.5 3.75 2.75 2.75
    4 6 4.4 4.4
    Application of the temperature of -40~+80 DEG C
    Applicable medium ammonia, liquid ammonia, natural gas, liquefied petroleum gas,etc.
    This valve is used in the city of liquefied petroleum gas storage station, is also used inoil refineries, petrochemical plants, liquefied gas system in petrochemical plant, as theopening and closing device control medium cut
    Two, the operating principle and structure
    1, the hand wheel clockwise turn, the valve rod to move downwards, the valve flap down so that the sealing surface of sealing, the channel cut off. The downturn is open, the valve rod sealing effect referred to the highest point.
    2, the valve sealing a increased. In the valve open state, and filling the role with two seals, and has certain protective function to the filler
    3, the valve using nylon products as a sealing cover, packing soft forming filler, the seal for the soft material, good sealing performance.
    Three, the material of main parts:
    Part name materials
    The valve body valve cover WCB LCB CF8
    Stem Cr13 F304
    The valve clack of nylon 1010 F4 babbit alloy (B)
    The valve stem nut Cr13 F304
    Stuffing PTFE + NBR
    Shim XB450
    Handwheel nodular cast iron
    Four, the main dimensions and connection dimensions:
    DN L D D1 D2 B F Z-D H D0
    15130956545162 with 4- 14207120
    201501057555162 with 4- 14217120
    251601158565162 with 4- 14219120
    3219013510075182 with 4- 18280160
    4020014511085183 with 4- 18330200
    50230160125100203 with 4- 18350240
    65290180145120223 with 8- 18400280
    80310195160135223 with 8- 18430320
    100350135190160243 with 8- 23465360
    125400270220188283 with 8- 25558400
    150480300250218303 with 8- 25611400
    200600360310278343 with 12- 25710450

    				 
				
			
    
		
    

    



    


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