Product use 
 Z47WF gas valve (gas leakage flat gate) dedicated to natural gas, liquid petroleum gas gas, oil and other unique design, novel structure and good sealing performance, it completely solved the valve caused by gas coke loose relationship, open fixed the problem, and effectively improve the sealing performance and service life, and truly achieve zero leakage. 

 【Features】 
 The valve body adopts casting structure. 
 Seat O-ring seal and preload floating seat structure, import and export of the valve is bi-directional seal; only 1/2 of the ordinary valve and the opening and closing moments of the structure, can be achieved easily open, shut valve. 
 The seat is sealed surface mounted PTFE, PTFE on metal and metal to metal double sealed, PTFE sealing surface at the same time clear the role of the gate dirt. 
 The gate valve fully open or fully closed always coincide with the sealing surface, the sealing surface to be protected from media directly eroded, thus prolonging the service life. 
 Valve in the fully open channel smooth straight line, a very small flow resistance coefficient, no pressure loss, can pass the ball clean wool pipeline. 
 Automatic removal of the valve is closed, the cavity pressure (see diagram), to ensure safety. 
 Using closed gears opening and closing directions of institutions, long-term and clearly reflect the opening and closing of the valve. 
 Buried valve outer surface of the coal tar epoxy, and the pipeline life. 
 【Executive standard] 
 Design & Manufacturing: API 600 

 Flange dimensions: ANSI B16.5 

 The length of the structure: the ANSI B16.10 

 Pressure-temperature: with ANSI B16.34 

 Test and inspection: API 598 

 Product performance specifications] 
 The main performance specification pressure levels Z47WF gas gate valve at room temperature test pressure (MPa) for the temperature applicable media 
 Shell test left sealed the right to seal low-pressure gas sealed ordinary anti-sulfur type 
 Nominal pressure 
 (MPa) 1.6 2.4 1.76 1.76 0.6 -29 ~ 121 ° C or requested by the user of oil, gas, water and other non-corrosive media containing H2S and Co2 oil, natural gas, water and other corrosive media 
 2.5 3.75 2.75 2.75 0.6 
 4.0 6.0 4.4 4.4 0.6 
 6.4 9.6 7.04 7.04 0.6 
 Pound class (Lb) 150 3.0 2.2 2.2 0.6 
 300 7.5 5.5 5.5 0.6