Valve R & D and production of strong German pressure flange stainless steel gate valve at nominal pressure PN1.6 ~ 16.0MPa, working temperature ≤ -29 ° C to 550 ° C oil, chemical, hydraulic, fire station, a variety of systems of control on the road , cut off or connected to the pipeline media. Suitable medium: water, oil, steam, acids, alkalis, ammonia, urea, sulfur-containing natural gas. 
 Structural characteristics of 
 Selected materials to meet the domestic and international standards, the overall quality of the material. 
 2, in line with the requirements of domestic and foreign advanced standards, reliable sealing, excellent performance, attractive appearance. 
 3, seal pair matching is advanced and reasonable, gate and seat sealing surface Stellite (of Stellite) cobalt-based alloy surfacing made of different hardness, reliable sealing, high hardness, wear resistance, temperature resistance, corrosion , anti-abrasion performance and long life. 
 4, stem quenched and nitride surface treatment, good corrosion resistance, scratch resistance and abrasion resistance. 
 5, the flexible wedge gate structure in large-caliber set the thrust bearing, the friction force is small, and with the impact hand wheel, open and close easily. 
 6, can be a variety with standard pipe flanges and flange sealing surface forms to meet various project needs and user requirements. 

 Material of main parts 

 Part name ZG1Cr18Ni9Ti 
 304 CF8 ZG00Cr18Ni10 
 304L CF3 ZG1Cr18Ni12Mo2Ti 
 316 CF8M ZG00Cr17Ni14Mo2 
 316L CF3M 
 Body / bonnet 0Cr18Ni9 00Cr18Ni10 0Cr18Ni9Mo2 00Cr18Ni10Mo2 
 Gate 0Cr18Ni9 00Cr18Ni10 0Cr18Ni9Mo2 00Cr18Ni10Mo2 
 Stem 0Cr18Ni9 00Cr18Ni10 0Cr18Ni9Mo2 00Cr18Ni10Mo2 
 Stem nut aluminum bronze 
 Packing PTFE braided PTFE braided PTFE woven PTFE fabric 
 Gasket 304 + PTFE-304L + PTFE 316 + PTFE-316L + PTFE 
 Gland 0Cr18Ni9 00Cr18Ni10 0Cr18Ni9Mo2 00Cr18Ni10Mo2 
 Bolts stainless steel 
 Nut stainless steel 
 Handwheel ductile iron, cast steel 


 The main connection size 
 Model nominal diameter size (mm) 
 LD D1 D2 bf z-Φd H D0 
 Z41W-1.6MPa 15 130 95 65 45 14-2 4-14 170 120 
 201,501,057,555 14-24-14200120 
 251601158565 14-2 4-14 215 140 
 3218013510078 16-2 4-18 260 160 
 4020014511085 16-34-18290200 
 50,250,160,125,100 16-3 4-18 345 220 
 65,265,180,145,120 18-3 4-18 360 240 
 80,280,195,160,135 20-3 8-18 385 280 
 100,300,215,180,155 20-3 8-18 430 300 
 125,325,245,210,185 22-3 8-18 520 320 
 150,350,280,240,210 24-3 8-23 610 350 
 200,400,335,295,265 26-3 12-23 765 400 
 250,450,405,355,320 30-3 12-25 895 450 
 300,500,460,410,375 30-4 12-25 1145 500 
 350,550,520,470,435 34-4 16-25 1200 550 
 400,600,580,525,485 36-4 16-30 1400 600 
 450,650,640,585,545 40-4 20-30 1500 650 
 500,700,705,650,608 44-4 20-34 1630 700 
 600,800,840,770,718 48-5 20-41 1830 800 





 The main connection size 

 Model nominal diameter size (mm) 
 LD D1 D2 bf z-Φd H D0 
 Z41W-2.5MPa 15 130 95 65 45 16-2 4-14 170 120 
 201,501,057,555 16-24-14200120 
 251601158565 16-2 4-14 215 140 
 3218013510078 18-2 4-18 260 160 
 4020014511085 18-34-18290200 
 50,250,160,125,100 20-3 4-18 345 220 
 65,265,180,145,120 22-3 8-18 360 240 
 80,280,195,160,135 22-3 8-18 385 280 
 100,300,230,190,160 24-3 8-23 430 300 
 125,325,270,220,188 28-3 8-25 520 320 
 150,350,300,250,218 30-3 8-25 610 350 
 200,400,360,310,278 34-3 12-25 765 400 
 250,450,425,370,332 36-3 12-30 900 450 
 300,500,485,430,390 40-4 16-30 1130 500 
 350,550,550,490,448 44-4 16-34 1250 550 
 400,600,610,550,505 48-4 16-34 1430 600 
 450,650,660,600,555 50-4 20-34 1520 650 
 500,700,730,660,610 52-4 20-41 1650 700 
 600,800,840,770,718 56-5 20-41 1850 800 


 The main connection size 
 Model nominal diameter size (mm) 
 LD D1 D2 D6 bf z-Φd H 
 Z41W-4.0MPa 15 130 95 65 45 40 16-2 4-14 170 
 20,150,105,755,551 16-2 4-14 200 
 25,160,115,856,558 16-2 4-14 215 
 321,801,351,007,866 18-2 4-18 260 
 402,001,451,108,576 18-3 4-18 290 
 5,025,016,012,510,088 20-3 4-18 345 
 65,280,180,145,120 110 22-3 8-18 360 
 80,310,195,160,135 121 22-3 8-18 385 
 100,350,230,190,160 150 24-3 8-23 430 
 125,400,270,220,188 176 28-3 8-25 530 
 150,450,300,250,218 204 30-3 8-25 620 
 200,550,375,320,282 260 38-3 12-30 780 
 250,650,445,385,345 313 ??42-3 12-34 900 
 Z41W-6.4MPa 15 170 105 75 55 41 18-2 4-14 175 
 20,190,125,906,851 20-2 4-18 200 
 252,101,351,007,858 22-2 4-18 215 
 322,301,501,108,266 24-2 4-23 270 
 402,401,651,259,576 24-3 4-23 300 
 5,025,017,513,510,588 26-3 4-23 370 
 65,280,200,160,130 110 28-3 8-23 385 
 80,310,210,170,140 121 30-3 8-23 400 
 100,350,250,200,168 150 32-3 8-25 460 
 125,400,295,240,202 176 36-3 8-30 570 
 150,450,340,280,240 204 38-3 8-34 660 
 200,550,405,345,300 260 44-3 12-34 820 
 250,650,470,400,352 313 48-3 12-41 1000 


 Strong Germany, and select safe!