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Bellows Sealed Stop Valves

Overview

The high integrity A3S bellows sealed valve is suitable for use under higher pressure steam, gas, and liquid applications as it is designed to ASME Class 800.

Technical Illustration

A3S and A3SS Bellows Sealed Stop Valve

A screwed and socket weld bellows sealed, in-line stop valve for use on steam, gas, liquid, condensate and water systems.

Technical Information

Sizes and pipe connection

½", ¾", 1", 1¼", 1½" and 2"

Screwed BSP (BS 21 parallel), NPT

Socket weld to BS 3799 /ANSI B 16.11

Pressure / temperature limits (Class 800)

Body design conditions 

Class 800
PMA Maximum allowable pressure  136 bar g
TMA Maximum allowable temperature 425°C
Minimum allowable temperature  -29°C
PMO Maximum operating pressure  99 bar g @ 360°C
Maximum operating pressure for extended bellows life 40 bar g @ 400°C
TMO  Maximum operating temperature  425°C
Maximum operating temperature for extended bellows life 400°C @ 40 bar g
Minimum operating temperature  -29°C
Without the bellows fitted the unit is designed for a maximum cold hydraulic test pressure of:  212 bar g

Teknisk information

language

English

reference number

TI-P132-09

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Vejledning til installation og vedligeholdelse

language

English

reference number

IM-P132-11

Download

Download PDF

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