Gestra MPA46 Blowdown Valve

Materials
PA 46, PA 47, PA 48, MPA 46, MPA 47, MPA 48
Component
EN
ASTM/ASME
Body1)
1.0460
SA 105
Union nut1)
1.0460
SA 105
Sealing plug1)
1.7225
SA 193 B7
Gasket PA 46, PA 47, MPA 46, MPA 47
1.4301
Gasket PA 48, MPA 48
2.4068
Seat (hardened)
1.4034
Cone (hardened)
1.4122
Disc springs
1.8159
Compression spring
1.1200
Diaphragm actuator (MPA only)
Galvanised steel (1.0334)
Packing
PTFE yarn
PTFE yarn
EPDM
EPDM
Control diaphragm (MPA only) 1)
Pressure-bearing components
Pressure and temperature ratings
PA 46, MPA 46 flange PN 40, butt-weld end EN p Pressure1) T Temperature1)
barg
40.0
37.1
33.3
27.6
°C
20.0
100.0
200.0
300.0
1)
Ratings for strength of body/cover to EN 1092-1 Operating data: Maximum pressure 31 bar at boiling temperature 237.5 °C
PA 46, MPA 46 flange CL 150 p Pressure1) T Temperature1) 1)
barg
19.6
17.7
13.8
10.2
°C
38.0
100.0
200.0
300.0
Ratings for strength of body/cover to ASME B16.34
PA 46, MPA 46 flange CL 300, socket-weld end EN/ASME, butt-weld end ASME
p Pressure1)
bar
51.1
46.6
43.8
39.8
T Temperature1)
°C
38.0
100.0
200.0
300.0
1) Ratings for strength of body/cover to ASME B16.34 Operating data: Maximum pressure 41.5 bar at boiling temperature 254 °C
PA 47, MPA 47 flange PN 63, butt-weld end EN p Pressure1) T Temperature1)
barg
63.0
58.5
52.5
43.5
°C
20.0
100.0
200.0
300.0
1) Ratings for strength of body/cover to EN 1092-1 Operating data: Maximum pressure 47 bar at boiling temperature 261 °C
PA 47, MPA 47 flange CL 400, socket-weld end EN/ASME, butt-weld end ASME
p Pressure1) T Temperature1)
barg °C
68.1
62.1
58.4
53.1
–29.0 — 20.0
100.0
200.0
300.0
1) Ratings for strength of body/cover to ASME B16.34 Operating data: Maximum pressure 55 bar at boiling temperature 270 °C
PA 48, MPA 48 flange PN 100, butt-weld end EN p Pressure1) T Temperature1)
barg °C
100.0
97.3
83.3
69.0
–10.0 — 20.0
100.0
200.0
300.0
1)
Ratings for strength of body/cover to EN 1092-1 Operating data: Maximum pressure 70 bar at boiling temperature 287 °C
PA 48, MPA 48 flange CL 600, socket-weld end EN/ASME, butt-weld end ASME
p Pressure1) T Temperature1)
barg °C
102.1
93.2
87.6
79.6
– 29.0 — 20.0
100.0
200.0
300.0
1) Ratings for strength of body/cover to ASME B16.5 Operating data: Maximum pressure 70 bar at boiling temperature 287 °C