Alarm check valve

Category System valve

Certificate: UL Listed / FM Approved
Standard: UL 193 / UL 753, FM 1041
Connection: Flanged ANSI B16.1 Class 125, EN 1092 PN 16, grooved, etc.
Feature: Check type, vertical installation only
Temperature: 0°C to 68°C
W. pressure: 300 psi
Surface: FBE coating as AWWA C550

Product Details

Alarm check valve is mainly used in wet pipe fire protection system, which prevents the reverse flow and controls water pressure. It automatically actuates alarm when water flows into the system upon fire sprinkler operation.

Available size (Source 1 with UL/FM)

Size	Connection	Working pressure (psi)	Ref. No.
3″ / DN80	FxF, GxG, FxG	300	V6501 (UL/FM)
4″ / DN100	FxF, GxG, FxG	300	V6502 (UL/FM)
6″ / DN150	FxF, GxG, FxG	300	V6503 (UL/FM)
8″ / DN200	FxF, GxG, FxG	300	V6504 (UL/FM)

Note: The flanged end connection is available with ANSI B16.5 Class 150, ANSI B16.42 Class 150, BS 4504 PN 16, or DIN 2532 PN 16.

Available size (Source 2 with FM)

Size	Connection	Working pressure (psi)	Ref. No.
2″ / DN50	FxF, GxG, FxG	300	V6511 (FM)
2-1/2″ / DN65	FxF, GxG, FxG	300	V6512 (FM)
3″ / DN80	FxF, GxG, FxG	300	V6513 (FM)
4″ / DN100	FxF, GxG, FxG	300	V6514 (FM)
5″ / DN125	FxF, GxG, FxG	300	V6515 (FM)
6″ / DN150	FxF, GxG, FxG	300	V6516 (FM)
8″ / DN200	FxF, GxG, FxG	300	V6517 (FM)
10″ / DN250	FxF, GxG, FxG	300	V6518 (FM)
12″ / DN300	FxF, GxG, FxG	300	V6519 (FM)

Note: The flanged end connection is available with ANSI B16.5 Class 150, ANSI B16.42 Class 150, BS 4504 PN 16, or DIN 2532 PN 16.

Available size (Source 3 with UL/FM )

Size	Connection	Working pressure (psi)	Ref. No.
3″ / DN80	GxG	300	V6521 (UL/FM)
4″ / DN100	GxG	300	V6522 (UL/FM)
6″ / DN150	GxG	300	V6523 (UL/FM)
8″ / DN200	GxG	300	V6524 (UL/FM)
3″ / DN80	FxF	250/232	V6525 (UL)
4″ / DN100	FxF	250/232	V6526 (UL)
6″ / DN150	FxF	250/232	V6527 (UL)
8″ / DN200	FxF	232	V6528 (UL)