Pipeline ancillaries

Bellows sealed stop valves

Steam

saturation

curve

7.1.1

ISO 9001

TI-P132-09

ST Issue 6

Cert. No. LRQ 0963008

Description

A screwed and socket weld bellows sealed, in-line stop valve for use

on steam, gas, liquid, condensate and water systems.

Standards

This product fully complies with the requirements of the European

Pressure Equipment Directive 97/23/EC.

The valve bellows fatigue life conforms to ISO 15761.

Seat leakage

Disc to seat shut-off conforms to API 598 and DIN 3230 leakage

rate B01.

Certification

This product is available with certification to EN 10204 3.1.

Note: All certification/inspection requirements must be stated at

the time of order placement.

A3S and A3SS

Bellows Sealed Stop Valve

15

14

Sizes and pipe connections

1⁄2", 3⁄4", 1", 11⁄4", 11⁄2" and 2"

Screwed BSP (BS 21 parallel), NPT

Socket weld to BS 3799/ANSI B 16.11

Pressure/temperature limits (Class 800)

12

11

8

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5

4

13

18

17

16

9

3

10

2

7

6

1

ASTM A105N

ASTM A105N

ASTM A105

Gr. 6

ASTM A276 Type 410

ASTM A276 Type 410

+ stellite Gr. 6

ASTM A479 Type 321

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Pressure bar g

The product must not be used in this region.

Operating restrictions to conform to ISO 15761.

Body design conditions

PMA Maximum allowable pressure

TMA Maximum allowable temperature

Minimum allowable temperature

PMO

Maximum operating pressure

Maximum operating pressure

for extended bellows life

TMO

Maximum operating temperature

Maximum operating temperature

for extended bellows life

Minimum operating temperature

Without the bellows fitted the unit is designed

for a maximum cold hydraulic test pressure of:

Class 800

136 bar g

425°C

-29°C

99 bar g @ 360°C

40 bar g @ 400°C

425°C

400°C @ 40 bar g

-29°C

212 bar g

Materials

No. Part

1 Body

2 Bonnet

3 Gland flange

4 Integral seat

A3S

5 Disc

A3SS

6 Bellows

7 Gaskets

8 Body bolts

9 Gland nuts

10 Gland studs

11 Stem packing

12 Gland follower

13 Handwheel

14 Wheel nut

15 Name-plate

16 Stem

17 Yoke nut

18 Grease nipple

Material

Forged steel

Forged steel

Forged steel

Stellite

Stainless steel

Stainless steel

Stainless steel

Spirally wound stainless steel and graphite

filler /graphite

insert.

Carbon steel

Carbon steel

Stainless steel

Graphite

Stainless steel

Carbon steel

Carbon steel

Stainless steel

Stainless steel

Stainless steel

Carbon steel

laminate

Kv values

Size

1⁄2"

3⁄4"

1"

11⁄4"

11⁄2"

2"

with stainless steel

ASTM A193 B7

ASTM A194 2H

AISI 410

ASTM A276 Type 410

ASTM A276 Type 410

ASTM A582 Type 410

© Copyright 2009

Kv

1.3

For conversion:

3.2

5.8

9.0

Cv (UK) = Kv x 0.963

17.0

19.2

Cv (US) = Kv x 1.156

Local regulations may restrict the use of this product to below the conditions quoted.

In the interests of development and improvement of the product, we reserve the right to change the specification without notice.

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