Extended Stem Bellows Seal Gate Valve

Bellows seal flanged gate valve is with double sealing face. Its sealing is good and its friction between sealing surface is small. That is why it can have long service life. The valve stem surface have nitriding treatment, has corrosion resistance and friction resistance.

Features:

Design standard : DIN EN12288

Face to face dimension : DIN EN588-1

Double seal, more reliable performance

Flexible wedge, renewable seat

Size : DN40 to DN300

Pressure : PN16, PN25, PN40

Operated : manual, gear box, electric motor, pneumatic cylinder, chain wheel

Material List:

No. Part Name Material
1 Body GS-C25, CF8, CF8M
2 Disc GS-C25, CF8, CF8M
3 Stem 13Cr, F304, F316
4 Gasket Flexible Graphite+304
5 Bolt A193 B7, B8
6 Nut A194 2H, 8
7 Bonnet GS-C25, CF8, CF8M
8 Bellows 304, 316
9 Bolt A193 B7, B8
10 Nut A194 2H, 8
11 Packing Flexible Graphite
12 Gland GS-C25, SS304, SS316
13 Yoke GS-C25, SS304, SS316
14 Key Bolt A193 B7, B8
15 Nut A194 2H, 8
16 Pin C.S., SS304, SS316
17 Oil Cup Brass
18 Stem Nut Bronze, 304, 316

Dimension List:

Dimensions
DN(mm) 40 50 65 80 100 125 150 200 250 300
L PN16 140 150 170 180 190 200 210 230 250 270
PN25 140 150 170 180 190 200 210 230 250 270
PN40 140 150 170 180 190 200 210 230 250 270

Applications:

Used in power station, natural gas, ammonia, vacuum, refrigeration system, hot oil, hot water system, especially for pipeline of inflammable, explosive, poisonous and precious medium