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Parallel Slide Blowdown Valve Class 250 |
Fig. M2142 |
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| COMPONENT |
MATERIAL |
| BODY |
CAST STEEL - A216 WCB |
| BONNET |
CAST STEEL - A216 WCB |
| SEAT |
NICKEL ALLOY |
| DISCS |
NICKEL ALLOY |
| STEM/RACK |
NICKEL BRONZE |
| PINION |
ALUMINIUM BRONZE |
| GLAND |
BRONZE |
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Technical Description of Standard Valves |
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SIZE |
A |
B |
C |
WEIGHT |
mm |
ins |
mm |
ins |
mm |
ins |
mm |
ins |
kg |
40 |
1 1/2 |
210 |
8 1/4 |
124 |
4 7/8 |
197 |
7 3/4 |
16.5 |
50 |
2 |
230 |
9 1/16 |
149 |
5 7/8 |
244 |
9 5/8 |
23.5 |
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Pressure Temperature Ratings |
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STANDARD FLANGE BS 4504 PN40 |
SATURATED STEAM PRESSURE |
lbf/in 2 |
BAR |
368 |
25.4 |
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Cast steel body and bonnet,
Aluminium
bronze stem, rack and pinion key operated
(Fig. 243/246 can be supplied as an extra if required)
Flanged to ANSI, BS, or European standards. |
