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Bolted Bonnet High Pressure Valves

Bolted Bonnet Bellows Seal Globe Valves

Bolted Bonnet Bellows Seal Globe Valves

Long cycle life bellows (3000 cycles) in Gr. 321 (stainless) or Inconel. Designed and successfully tested in high pressure/temperature conditions.
Two-part bellows.
Two secondary stem seals: a) Backseat in open position; b) Graphite packing....

Features and benefits

● Long cycle life bellows (3000 cycles) in Gr. 321 (stainless) or Inconel. Designed and successfully tested in high pressure/temperature conditions.
● Two-part bellows.
● Two secondary stem seals: a) Backseat in open position; b) Graphite packing.
● Low torque due to: a) Non-rotating stem prevents torsion of bellows; b) Stem nut thrust bearings; c) Central lubrication.
● Bellows monitoring port (optional): A plug can be connected to the space above the bellows to monitor performance.
● Forged for higher safety: Increased toughness, strength and fatigue resistance.
● Guided disc: Seat and disc hardfaced with CoCr alloy, ground and lapped.


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Cryogenic Globe Valve 800Lb       Standard Material Specifications

NO.

Part Name

AS to ASTM

SS to ASTM

Type A350 LF2

Type A350 LF3

Type A182 F304

Type A182 F316(L)

1

Body

A350 LF2

A350 LF3

A182 F304(L)

A182 F316(L)

2

Disc

A276 410

A276 304(L)

A276 304(L)

A276 316(L)

3

Bonnet

A350 LF2

A350 LF3

A182 F304(L)

A182 F316(L)

4

Gasket

Corrugated SS + graphite

SS + PTFE

5

Bold Nut

A193 B7

A193 B7

A193 B8

A193 B8M

6

Stem

A182 F6

A182 F6

A182 F304(L)

A182 F316(L)

7

Stem Packing

Flexible graphite

PTFE

8

Gland

A276 420

A182 F304

9

Pin

A276 420

A182 F304

10

Gland Eyebolt

A193 B7

A193 B16

A193 B8

A193 B8M

11

Gland Flange

A216 WCB

A351 CF8

12

Gland Nut

A194 2H

A194 4

A194 8

A194 8M

13

Yoke Nut

A276 410

14

Hand wheel

A197

15

Nameplate

SS

16

H.W. Nut

A194 2H

A194 4

A194 8

A194 8M

Suitable Temperature

40

101

196

Note: Other materials are available upon request.


Dimensions (mm) and Weights (Kg)


NPS

3/8

1/2

3/4

1

1-1/4

1-1/2

2

L

79

92

111

120

120

172

200

H(OPEN)

333

337

370

480

410

474

546

W

100

100

125

160

160

180

200

Weights

Bolted

5.2

7.2

10.9

13.5

15.2

19.8

29.0

Welded

4.8

6.5

9.5

11.5

13.1

17.5

26.8



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