
10
Materials EN DIN ASTM equivalent
Body P250GH (1.0460) C22.8 (1.0460) A105
Cover MK 25/2 P250GH (1.0460) C22.8 (1.0460) A105
Cover MK 25/2S GP240GH (1.0619) GS-C25 (1.0619) A216 WCB
Bolts 42CrMo4 (1.7225) A193 B7
Body gasket Graphite
Thermostatic capsule Hastelloy
®
/ Stainless steel
Other internals Stainless steel
Explanatory Notes – continued –
Technical data – continued –
Max. admissible differential pressure
1
)
Differential pressure ∆PMX [barg] 22
(inlet pressure minus outlet pressure) [psig] 319
1
) Observe pressure/temperature ratings!
Pressure/Temperature Ratings Class 300
Body material 1.0460 (P250GH / C22.8) / ASTM A105
Nominal sizes (DN) 40, 50
Connection Flanged ASME Class 300
Max. allowable pressure PMA [barg] 51 43.9 38.9 34.6 20.2
[psig] 740 637 565 501 294
Inlet temperature TMA [°C] 20 200 300 400 450
[°F] 68 392 572 752 842
Pressure/Temperature Ratings Class 150
Body material 1.0460 (P250GH / C22.8) / ASTM A105
Nominal sizes (DN) 40, 50
Connection Flanged ASME Class 150
Max. allowable pressure PMA [barg] 19.7 14 10.2 6.5 4.6
[psig] 287 203 149 94.3 66.7
Inlet temperature TMA [°C] 20 200 300 400 450
[°F] 68 392 572 752 842
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