Z43H / X steel plate gate valve for natural gas, petroleum, chemical, environmental protection, urban pipeline, gas pipeline and other pipelines, venting systems and vapor storage device, for opening and closing equipment. Z43-based single-ram type with deflector plate valve for gas exploration and purification of long-distance pipeline. 

 Features: 
 1, the seat of the seal structure should be flexible with pretension, the upstream and downstream sealing seat while sealing structure. Between the valve seat and seal materials always face to face seal. 
 2, a self-cleaning function of the valve seat and the valve is not open or close the process flow of direct erosion. Seat should be lubricated, do not wear materials. 
 3, the valve actuator to the valve failure will not affect other parts, maintenance and replacement without removing the valve can be carried out under the circumstances. 
 4, yoke sleeve: aluminum bronze yoke sleeve configuration needle thrust bearings, to minimize operating torque. 
 5, stem: length of thread until the bracket; pin and spot welding; with stability. 
 6, pressure seal: simple structure, configuration, and silver-plated mild steel segment ring gasket to aid disassembly and achieve the best bonnet seal. 
 7, the seat ring: welded seat ring perpendicular to the flow channel, easy to maintain. 
 8, implementing agencies: These valves can be electric, hydraulic or pneumatic actuator. The following configuration standards DN300 hand pulley, DN350 above configuration helical gear operators. 
 9, yoke: fully assembled yoke by seismic testing, ease of maintenance and installation of the implementing agency. 
 10, gland: two-piece, self-adjusting gland, to avoid being ejected. 
 11, the whole back seat: hard surface, the longest service life. 
 12, the valve flap: spring-loaded self-adjusting valve can reduce the actuator torque requirements. 
 13, the overall stop: the whole cast bracket stop device, positioning valve assembly of the bracket, making the seat more stable and reliable. 


 】 【Product standard 
 Design and manufacture: JB/T5298 

 Flange Size: JB/79 

 Structure length: JB/T5298 

 Pressure ~ temperature: GB9131 

 Inspection and testing: JB/T5298 


 【Specification】 performance 
 Z43H / X steel plate gate level design of the main performance specification test pressure at room temperature (MPa) applicable for medium temperature ℃ 
 Shell left sealed low-pressure seals sealing the left "G" type "D" type common type of "sulfur" type "basic" type 
 Nominal pressure PN (MPa) 1.6 2.4 1.76 1.76 0.6 -29 ~ 50 -45 ~ 21 -2 ~ 121 H2S and CO2 content of greater than 500mg/m2 media total oil and gas, water, etc. 
 0.6 2.5 3.75 2.75 2.75 
 4.0 6.0 4.4 4.4 0.6 
 7.04 7.04 0.6 6.4 9.6 
 Pound Lb 150 3.0 2.2 2.2 0.6 
 300 7.7 5.6 5.6 0.6 


 【Material】 product components 
 Z43H / X steel plate gate valve material of main parts / bonnet WCB WC6 A352-LCB A351-CF8M 
 Gate 2Cr13 + ENP 20CrMoV + STL ANSO410 + ENP ANSI316 + ENP 
 Stem 2Cr13 2Cr13 A182-A6a A182-A316S 
 Seat 25 + PTFE 20CrMoV + STL A105 + PTFE A182-F316 + PTFE 
 Fill NBR / FPM PTFE flexible graphite 
 Gasket - 
 Bolts 35 35CrMo A193-B7M A193-B8 
 For medium water, ports, steam steam, oil propane, ethylene, nitric acid