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Piston gate valve

Model: UZ41SM
Nominal diameter: DN15 ~ 400mm
Nominal pressure: PN1.6 ~ 4.0MPa
Temperature: ≤300 ℃
Main material: steel, stainless steel, gray cast iron
Operation: manual, bevel gear, an electric
Design criteria: GB12233 -89,12235-89
Structure length: GB12221-89
Connection standards: GB79-59, GB113.1 ~ 9113.26
Pressure test: ZBJ160006, GB4981


First, the main features of plunger valve

Piston gate valve is composed of valve body, valve cover, valve stem, plunger, guide sleeve, seal ring, hand wheel and other components (pictured). When the hand wheel rotates, the plunger drives the plunger in the guide sleeve Up and down reciprocating motion, so that the end of the plunger cone and valve seat surface to complete the valve opening and closing function. Piston gate valve plunger and the seal ring with interference fit by adjusting the flange bolt preload, the seal ring compression force generated by the valve body and the hole in the outer surface of the piston seal so as to wear and tear Non-toxic new sealing material, so the seal is reliable, durable, thereby enhancing the service life of the valve. Piston gate valve is based on the original size of the valve gate connection design and manufacture, due to leakage occurred in the process of gate valve, sealing ring with poor flexibility, short life and other characteristics of the valve produced by the NieWei plunger gate valve Leak-free valve plunger valve gate valve opening and closing fast and high temperature and pressure characteristics, to become a novel structure of the leak-free plunger gate valve.

Second, the performance of plunger valve specifications

Body material proper temperature Suitable media Pressure range
Cast steel <250 ℃ Water, steam, oil PN1.6 ~ 4.0MPa
cast iron <180 ℃ Water, steam, oil PN1.6
stainless steel <200 ℃ Nitric acid, acetic acid Path range
Containing molybdenum stainless steel <200 ℃ Ammonia, hydrogen, urea and so on DN15 ~ 400mm


Third, the experimental plunger pressure valve

experimental project Experimental medium Experimental pressure
Pressure test water 1.5PN
High pressure seal experiment water 1.1PN
Low pressure gas seal experiment gas 0.5-0.7MPa


Fourth, the main plunger valve connection size

DN (mm) 
Size (mm)
1.6Mpa UZ41SM-16C, P, R UZ41H-16C, Y, P, R
15 20 25 32 40 50 65 80 100 125 150 200 250 300 350 400
L 130 150 160 180 240 250 265 280 300 325 350 400 450 500 550 600
Do 100 100 120 140 160 180 200 240 280 320 350 400 520 640 760 900
D 95 105 115 135 140 160 180 195 215 245 280 335 405 460 520 580
D1 65 75 85 100 110 125 145 160 180 210 240 295 355 410 470 525
D2 45 55 65 78 85 100 120 135 155 185 210 265 295 375 435 485
B 14 14 14 16 16 16 18 20 20 22 24 26 26 30 34 36
Z-Ød 4-14 4-14 4-14 4-18 4-18 4-18 4-18 8-18 8-18 8-18 8-23 12-23 12-23 12-25 16-25 16-30
DN (mm) 
Size (mm)
2.5Mpa UZ41SM-25C, P, R UZ41H-25C, Y, P, R
15 20 25 32 40 50 65 80 100 125 150 200 250 300 350 400
L 130 150 160 180 240 250 265 280 300 325 350 400 450 500 550 600
Do 100 100 120 140 160 180 200 240 280 320 350 400 520 640 760 900
D 95 105 115 135 145 160 180 195 230 270 300 360 425 485 550 610
D1 65 75 85 100 110 125 145 160 190 220 250 310 370 430 490 550
D2 45 55 65 78 85 100 120 135 160 188 218 278 332 390 448 505
B 16 16 16 18 18 20 22 22 24 28 30 34 36 40 44 48
Z-Ød 4-14 4-14 4-14 4-18 4-18 4-18 4-18 8-18 8-23 8-25 8-25 12-25 12-30 16-30 16-34 16-34

DN (mm)

Size (mm)

4.0Mpa UZ41SM-40C, P, R UZ41H-40C, Y, P, R
15 20 25 32 40 50 65 80 100 125 150 200 250 300 350 400
L 130 150 160 180 200 250 265 280 300 325 350 400 450 500 550 600
Do 100 100 120 140 160 180 200 240 280 320 350 400 520 640 760 900
D 95 105 115 135 145 160 180 195 230 270 300 375 445 485 570 655
D1 65 75 85 100 110 125 145 160 190 220 250 320 385 430 510 585
D2 45 55 65 78 85 100 120 135 160 188 218 282 345 390 465 535
B 16 16 16 18 18 20 22 22 24 28 30 38 42 40 52 58
Z-Ød 4-14 4-14 4-14 4-18 4-18 4-18 4-18 8-18 8-23 8-26 8-26 12-30 12-33 16-30 16-36 16-39
Group address:No.342, Hesheng Yutingyuan, Xiangju Road, Qingpu District, Shanghai

Hotline:+86-21-69755076   59755666   69755027   69755026   57339828
Investment call: +86-15021631111
Fax:+86-21-69755075     E-mail:sales@sgfm.cn
Factory address:No. 1798, Wang Wei East Road Fengjing Development Zone Jinshan District Shanghai City
Copyright © Shen Gao Valve Group Co., Ltd.        www.shengao-valve.com
HuICP No. 14017677    No.31011802002466    Technical support:Fengsheng technology
Group address:No.342, Hesheng Yutingyuan, Xiangju Road, Qingpu District, Shanghai
Hotline:+86-21-69755076   59755666
     +86-21-69755027   69755026   57339828
Investment call: +86-15021631111
Fax:+86-21-69755075   E-mail:sales@sgfm.cn
Factory address:No. 1798, Wang Wei East Road Fengjing Development Zone Jinshan District Shanghai City
Copyright © Shen Gao Valve Group Co., Ltd.
www.shengao-valve.com
HuICP No. 14017677
No.31011802002466
Technical support:Fengsheng technology