Wafer Triple Offset Butterfly Valve(Pneumatic)

Technical Parameter

Pressure range:PN10-PN160  CLASS150Lb~1500Lb

Nominal diameter:DN 50~DN3000  NPS2"~120"

Body material:Carbon steel, Stainless steel, Duplex stainless steel, Alloy steel, Nickel alloy

End connection:Wafer

Working temperature:-29℃~350℃

Mode of operation:Pneumatic device

Design standard:GB/T12238, JB/T8527, API 609


Product Detail

Product Structure Features

Triple offset butterfly valve has one more offset feature compared to double offset design, which is the seat cone axis offset from the stem centerline that reduces the operating torque. Triple offset butterfly valves are widely used in power plant, petrochemical, metallurgy, water supply and drainage system, municipal construction as throttling flow and shutoff equipments.


The Main Structure Features Include

1.Without any friction between disc and sealing surface when opening or closing,

2.Can be installed in any position;

3.Zero leakage design;

4.Soft seat or metal seat is available as per customer request;

5.Unidirectional seal or Bidirectional seal is available as per customer request;

6.Spring loaded packing can be chosen;

7.Low emission packing can be chosen according to ISO 15848 requirement;

8.Stem extended design can be chosen;

9.Cryogenic temperature or ultra low temperature butterfly valve can be chosen as per customer request.


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Main connection size

Nominal diameter(DN)

Main dimensions Flange size and bolt size
1.0MPa 1.6MPa 2.5MPa
L H H1 D1 4-ФM D1 4-ФM D1 4-ФM
50 43 350 112 125 Ф18 125 Ф18 125 Ф18
65 46 370 115 145 Ф18 145 Ф18 145 Ф18
80 49 380 120 160 Ф18 160 Ф18 160 Ф18
100 56 420 138 180 Ф18 180 Ф18 190 Ф23
125 64 460 164 210 Ф18 210 Ф18 220 Ф27
150 70 555 175 240 Ф23 240 Ф23 250 Ф27
200 71 605 208 295 M20 295 M20 310 M24
250 76 680 243 350 M20 355 M24 370 M27
300 83 800 283 400 M20 410 M24 430 M27
350 92 835 310 460 M20 470 M24 490 M30
400 102 915 340 515 M24 525 M27 550 M33
450 114 960 380 565 M24 585 M27 600 M33
500 127 1020 410 620 M24 650 M30 660 M33
600 154 1225 470 725 M27 770 M33 770 M36
700 165 1355 550 840 M27 840 M33 875 M39
800 190 1470 640 950 M30 950 M36 990 M45
900 203 1545 710 1050 M30 1050 M36 1090 M45
1000 216 1795 770 1160 M33 1170 M39 1210 M52
1200 254 1965 890 1380 M36 1390 M45 1420 M52