Grooved globe type pressure relief valve

Category Pump room control & protection valves

Certificate: UL Listed / FM Approved
Standard: UL 1478, NFPA 20
Connection: Grooved as AWWA C606, ISO 6182
Temperature: Max 82°C, water
W. pressure: 400 / 300 psi
Surface: FBE coating as AWWA C550

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Product Details

Grooved globe type pressure relief valve (Fire pump relief valve) is used in the discharge of fire pump to automatically relieve 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.
1-1/2″ / DN40	20 ~ 200 / 100 ~ 300	GxG	400	U3201 (ULC)
2″ / DN50	20 ~ 200 / 100 ~ 300	GxG	400	U3202 (ULC)
2-1/2″ / DN65	20 ~ 200 / 100 ~ 300	GxG	400	U3203 (ULC)
3″ / DN80	20 ~ 200 / 100 ~ 300	GxG	400	U3204 (UL/FM)
4″ / DN100	20 ~ 200 / 100 ~ 300	GxG	400	U3205 (UL/FM)
6″ / DN150	20 ~ 200 / 100 ~ 300	GxG	400	U3207 (UL/FM)
8″ / DN200	20 ~ 200 / 100 ~ 300	GxG	400	U3208 (UL/FM)

Note:
1. For size 3″, 4″, and 6″, the working pressure is 300 psi by UL listed, and 400 psi by FM approved.
2. KOL Anti-Cavitation Trim Seat is available, except size 3″, 4″, 6″.
3. As factory preset, the relief pressure is set at 60 psi for 20 ~ 200 range, 100 psi for 100 ~ 300 range.

Available size (Source 2 with UL/FM)

Size	Relief pressure range (psi)	Connection	Working pressure (psi)	Ref.No.
1-1/2″ / DN40	65 ~ 300	GXG, GXF	300	U3221 (UL/FM)
2″ / DN50	65 ~ 300	GXG, GXF	300	U3222 (UL/FM)
2-1/2″ / DN65	65 ~ 300	GXG, GXF	300	U3223 (UL/FM)
3″ / DN80	65 ~ 300	GXG, GXF	300	U3224 (UL/FM)
4″ / DN100	65 ~ 300	GXG, GXF	300	U3225 (UL/FM)
5″ / DN125	65 ~ 300	GXG, GXF	300	U3226 (UL/FM)
6″ / DN150	65 ~ 300	GXG, GXF	300	U3227 (UL/FM)
8″ / DN200	65 ~ 300	GXG, GXF	300	U3228 (UL/FM)
10″ / DN250	65 ~ 300	GXG, GXF	300	U3229 (FM)
12″ / DN300	65 ~ 300	GXG, GXF	300	U3230 (FM)