Product

Bellows Globe Valve

Specification

Size Range: DN15-DN400

Pressure: PN16/25/40/64

Body Materials: WCB/CF8

Disc Materials: A105+13Cr/CF8

Stem Materials: 2Cr13/304   

Face to face dimension: DIN3202

Flanged ends: DIN2543-2545

Test & inspection: DIN3230

Working temperature:-29℃~425℃

Suitable medium:Water,Oil,Gas etc.


Application :Municipal construction, Power, Medicine, Petroleum industry

Main Parts Material:

Body

Bonnet

Stem

Disc

Seat

Paking

WCB

WCB

13Cr

2Cr13

2Cr13

Flexible graphite

STL

CF8

CF8

304

304

304

Flexible graphite

STL

PTFE

CF8M

CF8M

316

316

316

Flexible graphite

STL

PTFE

CF3

CF3

316

304L

304L

Flexible graphite

STL

PTFE

CF3M

CF3M

316

316L

316L

Flexible graphite

STL

PTFE

Features:

  1. The valve body and the bonnet are connected with studs, which have simple structure and good process performance.
  2. The stem nut adopts surface nitriding to improve the surface hardness and prevent the seizure phenomenon.
  3. The medium flange bolt is made of high-strength alloy steel, with excellent high temperature creep resistance.
  4. Due to the relatively long design of the bellows, the opening height is large, the main resistance of the fluid is reduced, and the flow resistance coefficient is small.
  5. Double sealing of packing and bellows is adopted to achieve zero leakage.
  6. The bellows is designed in the inner cavity of the valve cover, which avoids direct flushing with the medium and improves the service life of the bellows.
  7. The bellows adopts 2~4 times overlap to prevent the valve leakage due to the damage of the single layer of the bellows, and prolong the service life of the valve.