Flanged angle type pressure relief valve

Category Pressure relief valve

Certificate: UL Listed / FM Approved
Standard: UL 1478, NFPA 20
Connection: Flanged as B16.42 Class 150 / 300
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 angle 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	Working pressure (psi)	Ref.No.
2″ / DN50	20 ~ 200 / 100 ~ 300	Class 150 / 300	250 / 400	U1301 (ISO)
2-1/2″ / DN65	20 ~ 200 / 100 ~ 300	Class 150 / 300	250 / 400	U1302 (ISO)
3″ / DN80	20 ~ 200 / 100 ~ 300	Class 150 / 300	250 / 400	U1303 (UL/FM)
4″ / DN100	20 ~ 200 / 100 ~ 300	Class 150 / 300	250 / 400	U1304 (UL/FM)
6″ / DN150	20 ~ 200 / 100 ~ 300	Class 150 / 300	250 / 400	U1305 (UL/FM)
8″ / DN200	20 ~ 200 / 100 ~ 300	Class 150 / 300	250 / 400	U1306 (UL/FM)
10″ / DN250	20 ~ 200 / 100 ~ 300	Class 150 / 300	250 / 400	U1307 (ISO)

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)

Size	Relief pressure range (psi)	Connection	Working pressure (psi)	Ref.No.
3″ / DN80	65 ~ 300	Class 125 / 150 / 300	300	U1311 (UL)
4″ / DN100	65 ~ 300	Class 125 / 150 / 300	300	U1312 (UL)
5″ / DN125	65 ~ 300	Class 125 / 150 / 300	300	U1313 (UL)
6″ / DN150	65 ~ 300	Class 125 / 150 / 300	300	U1314 (UL)
8″ / DN200	65 ~ 300	Class 125 / 150 / 300	300	U1315 (UL)