Wet alarm check valve UL/FM Approved

Features: Installation height of the valve according to customer’s requirement; The valves could be installed indoor or outdoor through wall as to customer’s requirement; Electrostatic Spraying both inside and outside of the body. The wet alarm valve is designed for applications where the water is unlikely to freeze. The water staying pressurized in the pipes is released over the fire area after the sprinkler is activated due to fire. The pressurized water system is not only feed continuously, but also fills in the retard chamber. After the chamber is filled, the pressure switch on the chamber is actuated. The pressure switch sends the alarm information to the fire warning system or the automation system. After the pressure switch is actuated, the water is delivered to the water-motor gong and releases a mechanical alarm.They are used in wet line of sprinkler system,fire protection system Size:121mm*58mm*112mm Pipeline entrance:Φ22.5mm Working temperature:-40℃-60℃ Pressure connection Nylon 1/2NPT(R21/2)thread Factory setting:5-7PSI Max working pressure:250PSI Environment specifications The dust proof and water proof level is IP66 Differential pressure: Generally 1 PSI Certificates available: UL/FM Size:1/4” NPT Pressure:0-300PSI/0-600PSI Working temperature:0℃-80℃ Design standard: UL393/FM2311 Test standard:UL393/FM2311 Certificates available: UL/FM

No.	Name	Qty	Material Science	Remark
1	Base	1	HPb59-1	GB/T 2040 2008
2	Watchcase	1	1008	SAE J1392 2008
3	Spring pipe	1	Qsn0.8-2	GB/T 5231-2012
4	Rivet	2	HPb59-1	GB/T 2040-2008
5	Connecting rod	1	H62	GB/T 2040-2008
6	Free end	1	H62	GB/T 2040-2008
7	Inner core combination	1	HPb59-1	GB/T 2040-2008
8	Dial plate	1	HPb59-1	GB/T 2040-2008
9	Pointer component	1	Al	GB/T 3880-2006
10	Watchcase	1	PC	GB/T 35513.1-2017
11	Rivet column	2	HPb59-1	GB/T 2040-2008

Pressure:0-300PSI Working temperature:0℃-100℃ Design standard: FM1055 Test standard:FM1055 Certificates available: UL/FM

No.	Name	Figure Number	Qty	Material
1	Driver shell	MH-SLJL -01	1	ALUMINIUM ALLOY
2	Impeller	MH-SLJL -02	1	DELRIN
3	Sealing gasket	MH-SLJL -03	1	EPDM
4	Cover	MH-SLJL -04	1	1045 OR SS304
5	Bolt		6	1045 OR SS304
6	Nozzle	MH-SLJL -05	1	C954
7	Gasket	MH-SLJL -06	1	1566
8	Support pipe	MH-SLJL -07	1	1045 OR SS304
9	Drive shaft	MH-SLJL -08	1	ALUMINIUM ALL OY
10	Sleeve	MH-SLJL -09	1	1045 OR SS304
11	Internal circlips	MH-SLJL -10	1	SS304
12	Drive shaft adaptor	MH-SLJL -11	1	DELRIN
13	Supporting screw	MH-SLJL -12	1	ALUMINIUM ALLOY OR SS304
14	Bell seat	MH-SLJL -13	1	ALUMINIUM ALLOY
15	Gong	MH-SLJL -14	1	ALUMINIUM ALLOY
16	Bolt		1	ALUMINIUM ALLOY OR 1045
17	Support nut	MH-SLJL-15	1	ALUMINIUM ALLOY
18	Striker	MH-SLJL-16	1	PHENOLIC RESIN
19	Bolt	MH-SLJL-17	1	ALUMINIUM ALLOY OR SS304
20	Joint	MH-SLJL-18	1	ALUMINIUM ALLOY
21	Screw nut	MH-SLJL-19	1	ALUMINIUM ALLOY OR SS304
22	Gasket	MH-SLJL-20	2	DELRIN
23	Supporting post	MH-SLJL-21	1	ALUMINIUM ALLOY OR SS304
24	Tag	MH-SLJL-22	1	PAPER

1.Long service life with resilient seat cycling test at least 5000 times 2.Full size range can satisfy with customer’s different requirement 3.Our own foundry to guarantee fast delivery and quality 4.Multiple O-ring sealing structure to protect the stem under pressure during operation and maintenance, it causes no damage to the operator.