Birkett Technical Catalogue - Safety Systems UK Ltd

VALVE SELECTION GUIDE
Q
– 11.05 in 2
– 7130 mm 2
TEMPERATURE
LIMITS API 526
538 1000
427 800
232 450
-29 -20
-59 -75
-268 -450
SPRING
BODY
CS - WC6
STAINLESS STEEL
CARBON STEEL TUNGSTEN
SS - CF8M CARBON STEEL - WCB
SET PRESSURE - PSIG
0
4
5
1
6
7
2 3
8
8
10 50 100 200 300 400 500
1000 538
500
900
450
800
400
700
350
600
300
500 250
400 200
300 150
100
200
50
100
0
0
-50
-100
-100
-200
-150
-300
-200
-400 -250
-450 -268
600
SET PRESSURE - BAR G.
0 0.69 2 4 6 6.9 10 15 20 30 41.4
ORIFICE Q (All dimensions in inches)
Size Rating A B C* D E F G H† Wt
(ins)
lbs (kg)
6 x 8 150 x 150 9.437 2.312 31.750 9.500 0.812 3 1/2 1 364 (165)
300 x 150 9.437 2.312 31.750 9.500 0.812 3 1/2 1 364 (165)
600 x 150 9.437 2.750 36.750 9.500 0.812 6 1/2 1 399 (181)
* – If a gag is fitted, add 0.5 ins.
– If a lever is fitted, add a maximum of 3.5 inch. (Only if flange rating is 600# or less.)
– For certified height (c), consult factory.
† Vent hole ‘H’ on bellows valves only.
41