Pressure balanced inverted oil seal plug valve
Release time:2023-8-25


Structural features

1. The product structure is reasonable, the seal is reliable, the performance is fine, the shape is beautiful;
2. Inverted pressure balance structure, light switch action;
3. An oil groove is arranged between the valve body and the sealing surface to inject sealing grease into the valve seat at any time through the oil nozzle to increase the sealing performance;
4. Parts material and flange size can be reasonably selected according to actual working conditions or user requirements to meet various engineering needs.


technical specifications

Structural formation BC
Driving maner Hand-operated
Electric-actuated
Design standard API599、API6D
Face to face ASMEB16.10
Flange ends ASMEB16.5
Test & inspection API598.API 6D



Product performance specification


Nominal pressure Shell test pressure Sealing test pressure Applicable temperature（℃） Applicable media
150 3 2.2 ≤180℃ Water, steam, oil, etc
300 7.5 5.5
600 15 11
900 22.5 16.5



Material of main parts


NO Part name Material
1 Boll ASTM A193-B7、 A320-B8、 A193-B8M
2 Nul ASTM A194-2H、 A194-8、 A194-8M
3 Cover ASTM A216-WCB ASTM A217-WCI、WC6、WC9、C5 ASTM A351-CF8, CF8M、CF3、CF3M
4 Gasket Flexible graphite+stainless steel, PTFE
5 Plug ASTM A182-Gr.F6a ASTM A182-F22 ASTM A182-F304、 F316. F321、 F304L、 F316L
6 Body ASTM A216-WCB ASTM A217-WC1. WC6, WC9、C5 ASTM A351-CF8. CF8M、CF3、CF3M
7 Stem ASTM A182-Gr F6a ASTM A182-F22 ASTM A182-F304、 F316, F321. F304L. F316L
8 "O" ring NBR
9 Packing Flexible graphites PTFE
10 Gland ASTM A216-WCB ASTM A217-WCK WC6、WC9、C5 ASTM A351-CF& CF8M、CF3、CF3M
11 Oil nozzie
12 Check valve
13 Wrench ASTM A47-32510. A216WCB



Product size



Model ZDAX47-150LB
Pressure 150LB
Caliber mm 15 20 25 32 40 50 65 80 100 125 150 200 250 300 350
Size in

1 1¼ 1½ 2 2½ 3 4 5 6 8 10 12 14
L 108 117 127 140 165 178 190 203 229 254 267 292 330 356 381
H 180 180 185 200 210 215 250 270 300 340 365 400 450 510 590
W 400 400 500 500 600 600 820 820 300 300 320 320 350 380 380
(Kg) Weight 10 12 14 17 19 21 29 33 48 75 98 125 171 230 370




Model ZDAX47-300LB
Pressure 300LB
Caliber mm 15 20 25 32 40 50 65 80 100 125 150 200 250 300 350
Size in

1 1¼ 1½ 2 2½ 3 4 5 6 8 10 12 14
L 140 152 165 178 190 216 241 283 305 381 403 419 457 502 762
H 180 180 185 200 210 215 250 270 300 340 365 400 450 510 590
W 400 400 500 600 600 820 1000 1000 300 300 320 320 350 380 380
(Kg) Weight 12 14 16 19 21 24 31 36 61 86 130 190 255 380 560




Model ZDAX47-600LB
Pressure 600LB
Caliber mm 15 20 25 32 40 50 65 80 100 125 150 200 250 300 350
Size In 1/2 3/4 1 1¼ 1½ 2 2½ 3 4 5 6 8 10 12 14
L 165 190 216 229 241 292 330 356 432 508 559 660 787 838 889
H 180 180 185 200 210 215 250 270 300 340 365 400 450 510 590
W 400 400 500 500 600 600 820 820 300 300 320 320 350 380 380
(Kg) Weight 14 16 18 20 24 29 35 47 91 129 210 320 660 920 1250




Model ZDAX47-900LB
Pressure 900LB
Caliber mm 15 20 25 32 40 50 65 80 100 125 150 200 250 300 350
Size in 1/2 3/4 1 1¼ 1½ 2 2½ 3 4 5 6 8 10 12 14
L 229 229 254 279 305 368 419 381 457 559 610 737 838 965 1029
H 180 180 185 200 210 215 250 270 300 340 365 400 450 510 590
W 400 400 500 600 600 820 1000 1000 300 300 320 320 350 380 380
(Kg) Weight 17 29 21 24 30 37 44 65 110 160 255 380 810 1050 1460




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