Spirax Sarco - Catalogo Agosto 2017

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Steam

saturation

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Pipeline ancillaries

Air vents and air eliminators

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.

TI-P123-16

ST Issue 5

AVS32

Stainless Steel

Air Vent for Steam Systems

Description

The AVS32 is a stainless steel maintainable balanced pressure thermostatic air vent for use on steam systems. It has an integral flat

strainer screen and straight connections. All pressure bearing components are produced by TÜV approved suppliers in accordance with

AD-Merkblatt WO/TRD100.

Standards

This product fully complies with the requirements of the European Pressure Equipment Directive 97/23/EC.

Certification

This product is available with certification to EN 10204 3.1.B.

Note: All certification/inspection requirements must be stated at the time of order placement.

Sizes and pipe connections

1⁄2", 3⁄4" and 1" screwed BSP or NPT.

1⁄2", 3⁄4" and 1" socket weld ends to BS 3799.

1⁄2", 3⁄4" and 1" butt weld ends to EN 12 627.

DN15, DN20 and DN25 standard flange to EN 1092 PN40,

ANSI B 16.5 Class 150 and 300, JIS/KS 10K and JIS/KS 20K.

Pressure/temperature limits (ISO 6552)

Materials

No. Part

Cover

Capsule

Valve seat

Strainer screen

Cover gasket

Body

Cover bolts

17 Spring

18 Spacer plate

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A-B Screwed, socket weld, butt weld and flanged ANSI 300.

A-C Flanged EN 1092 PN40.

A-D Flanged JIS/KS 20K.

A-E Flanged ANSI 150.

F-G Flanged JIS/KS 10K.

Body design conditions

PN40

PMA Maximum allowable pressure

50 bar g @ 50°C

TMA Maximum allowable temperature

400°C @ 30 bar g

Minimum allowable temperature

-200°C

PMO

Maximum operating pressure

32 bar g

for saturated steam service

TMO Maximum operating temperature

287°C @ 32 bar g

Minimum operating temperature

0°C

Note: For lower operating temperatures consult Spirax Sarco.

Designed for a maximum cold hydraulic test pressure of 75 bar g

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Pressure bar g

The product must not be used in this region.

The product should not be used in this region as damage

to the internals may occur.

Material

Austenitic

stainless steel

Stainless steel

graphite

Austenitic

stainless steel

Stainless steel

DIN 17440 (W/S 1.4571)

316Ti

BS 970 431 S29

AISI 304

reinforced exfoliated

DIN 17440 (W/S 1.4571)

316Ti

Kv values

Size

For conversion:

(M10 x 30)

A2-70

DN15 - 1⁄2"

0.8

DN20 - 3⁄4"

0.8

DN25 - 1"

0.8

Cv (UK) = Kv x 0.963 Cv (US) =Kv x 1.156