Pipeline ancillaries Air vents and air eliminators
10
Materials
13 1
2
AV45 Butt weld version shown illustrating the valve arrangement for the ¾" and 1" sizes.
3
8
4 5
10 11
9
Valve arrangement for the ½" sizes
5
12 7 6
9
12
7
No.
Part
Material
1 2
Cover
Alloy steel
DIN 17243 13Cr Mo44 (W/S 1.7335)
Locking nut
Stainless steel
BS 970 303 S21
½ " - Rau Type RR ¾ " - 1 ½ " Type 100
3
Thermostatic element
Corrosive resistant bimetal and stainless steel
4 5 6 7 8 9
Strainer screen
Stainless steel
ASTM A240 316L
Valve seat
Stainless steel
BS 970 431 S29
10.11 30
Valve seat gasket
Stainless steel
BS 1449 304 S12
Valve
Stainless steel
BS 970 431 S29
Spring
Stainless steel
BS 2056 302 S26
Body
Alloy steel
DIN 17245 CS 22 Mo4
Cover gasket
Spirally wound stainless steel graphite filled gasket
10
Cover stud
Alloy steel
ASTM A193 Gr. B7
Cover nut
Carbon steel
BS 4882 Gr. 2H
11
Cover washer
Carbon steel
BS 4320 Table 1 Form A
12 13
Seat insert
Stainless steel
BS 970 321 S20
Name-plate
Stainless steel
BS 1449 304 S16
TI-P123-03 CMGT Issue 7
Page 4 of 6
AV45 Air Vent for Steam Systems
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