Flanged globe type pressure relief valve (Fire pump relief valve) is used in the discharge of fire pump with flanged connection. It automatically relieves excessive pressure, so to maintain constant pressure. It allows the fire pump to be stopped without causing surging.
Available size (Source 1 with UL/FM)
Size | Relief pressure range (psi) | Connection | Ref.No. |
---|---|---|---|
1-1/2″ / DN40 | 20 ~ 200 / 100 ~ 300 | Class 150 / 300 | U1101 (ULC) |
2″ / DN50 | 20 ~ 200 / 100 ~ 300 | Class 150 / 300 | U1102 (ULC) |
2-1/2″ / DN65 | 20 ~ 200 / 100 ~ 300 | Class 150 / 300 | U1103 (ULC) |
3″ / DN80 | 20 ~ 200 / 100 ~ 300 | Class 150 / 300 | U1104 (UL/FM) |
4″ / DN100 | 20 ~ 200 / 100 ~ 300 | Class 150 / 300 | U1105 (UL/FM) |
6″ / DN150 | 20 ~ 200 / 100 ~ 300 | Class 150 / 300 | U1107 (UL/FM) |
8″ / DN200 | 20 ~ 200 / 100 ~ 300 | Class 150 / 300 | U1108 (UL/FM) |
10″ / DN250 | 20 ~ 200 / 100 ~ 300 | Class 150 / 300 | U1109 (ULC) |
Note:
1. For size 3″, 4″, 6″, and 8″, the working pressure of Class 300 connection is 300 psi by UL listed, and 400 psi by FM approved.
2. EN/BS flanged end connection is also available by FM approved, including EN 1092-2 PN10, PN16, or PN25.
3. KOL Anti-Cavitation Trim Seat is available.
Available size (Source 2 with UL/FM)
Size | Relief pressure range (psi) | Connection | Ref.No. |
---|---|---|---|
1-1/2″ / DN40 | 65 ~ 300 | Class 125 / 150 / 250 / PN16 | U1121 (UL/FM) |
2″ / DN50 | 65 ~ 300 | Class 125 / 150 / 250 / PN16 | U1122 (UL/FM) |
2-1/2″ / DN65 | 65 ~ 300 | Class 125 / 150 / 250 / PN16 | U1123 (UL/FM) |
3″ / DN80 | 65 ~ 300 | Class 125 / 150 / 250 / PN16 | U1124 (UL/FM) |
4″ / DN100 | 65 ~ 300 | Class 125 / 150 / 250 / PN16 | U1125 (UL/FM) |
5″ / DN125 | 65 ~ 300 | Class 125 / 150 / 250 / PN16 | U1126 (UL/FM) |
6″ / DN150 | 65 ~ 300 | Class 125 / 150 / 250 / PN16 | U1127 (UL/FM) |
8″ / DN200 | 65 ~ 300 | Class 125 / 150 / 250 / PN16 | U1128 (UL/FM) |
10″ / DN250 | 65 ~ 300 | Class 125 / 150 / 250 / PN16 | U1129 (FM) |
12″ / DN300 | 65 ~ 300 | Class 125 / 150 / 250 / PN16 | U1130 (FM) |
Available size (Source 3 with CE)
Size | Relief pressure range (psi) | Connection | Ref.No. |
---|---|---|---|
2″ / DN50 | 29 ~ 188 | Class 125 / PN16 | U1142 (CE) |
2-1/2″ / DN65 | 29 ~ 188 | Class 125 / PN16 | U1143 (CE) |
3″ / DN80 | 29 ~ 188 | Class 125 / PN16 | U1144 (CE) |
4″ / DN100 | 29 ~ 188 | Class 125 / PN16 | U1145 (CE) |
6″ / DN150 | 29 ~ 188 | Class 125 / PN16 | U1147 (CE) |
8″ / DN200 | 29 ~ 188 | Class 125 / PN16 | U1148 (CE) |
10″ / DN250 | 29 ~ 188 | Class 125 / PN16 | U1149 (CE) |
12″ / DN300 | 29 ~ 188 | Class 125 / PN16 | U1150 (CE) |
14″ / DN350 | 29 ~ 188 | Class 125 / PN16 | U1151 (CE) |
16″ / DN400 | 29 ~ 188 | Class 125 / PN16 | U1152 (CE) |
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