Flanged globe type pressure relief valve

Category Pressure relief valve

Certificate: UL Listed / FM Approved / CE
Standard: UL 1478, NFPA 20
Connection: Flanged as B16.42 Class 150 / 300, B16.1 Class 125 / 250, EN 1092-2 PN16
Adjustment: 20 ~ 200 / 100 ~ 300 psi, etc.
Temperature: Max 82°C, water
W. pressure: 250 / 400 psi, etc.
Surface: FBE coating as AWWA C550

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Product Details

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)