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Service and Repair
Parallel Slide Blowdown Valve Class 600
Fig. 3492
   
 
COMPONENT MATERIAL
BODY CAST STEEL - A216 WCB
BONNET CAST STEEL - A216 WCB
SEATS NICKEL ALLOY
DISCS NICKEL ALLOY
BANJO FORGED STEEL
RACK STAINLESS STEEL
PINION STAINLESS STEEL
LOCKING GLAND BRONZE
     
  Technical Description of Standard Valves  
     
 
SIZE
A +
D
WEIGHT *
mm
ins
mm
ins
mm
ins
kg
20
3/4
184
7 1/4
216
8 1/2
11.3
25
1
203
8
235
9 1/4
17.7
32
1 1/4
241
9 1/2
767
10 1/2
23.6
40
1 1/2
267
10 1/2
299
11 3/4
30.8
50
2
330
13
381
15
62. 6
     
  * Weights of flanged valves only.
+ Valves rated up to and including BST 'R' only
For valves with ANSI. 600 flanges add 1/4"- 6mm to dimension 'A'
     
  Pressure Temperature Ratings  
   
 
TEMP.°C
WORKING
PRESSURE BAR
—29
38
102.1
-
50
100.2
-
100
92.8
-
150
90.5
-
200
87.6
-
250,
83.4
-
300
77.5
-
350
73.9
-
375
72.9
-
400
69.0
-
425
57.5
-
450
40.1

Forged steel body, cast steel bonnet.

Valve operated through a half turn of a
removable box key
(Fig. 497 can be supplied as an extra if required).

Flanged to ANSI. BS or European standards.
Butt weld/Socket weld ends to customer's order.