Deluge Alarm Valve

Products Details

What’s the Deluge valve?

Deluge valve is mainly used in high flow deluge system. It is a diaphragm valve to automatically control the system water flow, and it actuates upon the wet pilot line, dry pilot line, electrical signal, and emergency manual release. 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.Alarm valves include wet alarm valves, pre-action alarm valves, and dry alarm valves. The wet alarm valve is a one-way valve that only allows water to flow into the sprinkler system in one direction and alarms at the specified flow rate. The wet alarm valve usually has the same water pressure before and after the disc (the water passes through the water pressure balance hole in the guide pipe to maintain the balance of the water pressure before and after the disc). The working principle of the alarm valve: Due to the difference between the self-weight of the valve disc and the total pressure of the water before and after the valve disc, the valve disc is in a closed state (the total pressure on the valve disc is greater than the total pressure below the valve core). When a fire breaks out, the closed nozzle sprays water. Since the water pressure balance hole is too late to replenish water, the water pressure above the alarm valve drops. At the same time, the water enters the delay device, pressure switch, hydraulic alarm bell and other facilities along the annular groove of the alarm valve, and sends out a fire alarm signal and starts the fire pump.

Product Drawing

MATERIAL SPECIFICATION
Part No.	Part	Standard   Specification
1	Valve Body	ASTM A536,   65-45-12
2	Main Gasket	EPDM
3	Gland of Main   Disc	ASTM A536,   65-45-12
4	Seat	AISI 304
5	Main Disc	ASTM A536,   65-45-12
6	Spring	Stainless Steel   4Cr13
7	Stem	AISI 304
8	Bushing	Brass H62
9	Middle Bonnet	ASTM A536,   65-45-12
10	Diaphragm	EPDM
11	Bolt	AISI 304
12	Up Gland	ASTM A536,   65-45-12
13	Bottom Gland	ASTM A536,   65-45-12
14	Up Bonnet	ASTM A536,   65-45-12
15	Cap Plug	Brass H62

 

DN		Dimensions(mm)
Inch	mm	L	H	D	D1	b	n-   ΦL
2″	50	206	170	152	120.5	16	4- Φ19.1
2.5″	65	211	195	178	139.5	17.5	4- Φ19.1
3″	80	249	215	191	152.5	19	4- Φ19.1
4″	100	320	255	229	190.5	24	8- Φ19.1
6″	150	414	360	279	241.5	25.5	8- Φ22.2
8″	200	500	450	343	298.5	28.5	8- Φ22.2
10″	250	605	550	406	362	30.5	12- Φ25.4
12″	300	724	645	483	432	32	12- Φ25.4
14″	350	734	700	533	476	35	12- Φ28.5
16″	400	991	790	597	540	36.5	16- Φ28.5

 

Quality Control

Advanced equipment guarantee the production of high quality products.
Advantages of DISA moulding line:1. High quality precise casting less scrap and lower finishing costs. 2.High Production Efficiency(1)Fast production: 350 moulds per hour, pattern changing time cut down to 2-3 minutes
(2).higher profitability over a longer service life. 3. Safety and Environmental Friendly safe, easy and clean operation (CE and ISO 14001 compliant)
High-precision, hydraulicly driven mould transport,no shifting, distortion, ordisplacement of moulds.
The advantage of the sand supply system:The sand supply system is from the best class sand processing equipment manufacturers of China, with straight structure, easier maintenance, environmently friendly, high degree of automation, high safety factor, good parameters of sand stability.

Fluid Tech is honored as the National enterprise technical center and is capable and qualified to conduct full series of tests and inspections including chemical checking, etc. Inspection facilities include:spectrometer, carbon sulfur analyzer, metallurgical microscope, tensile strength testing equipment, pressure testing equipment, adhesive force testing equipment, CMM, hardness tester, etc.From incoming inspection to finished product, quality is checked a
nd monitored in the whole process. Each step of the manufacturing process is carefully documented, regularly reviewed for revision control and updatin
g standard. Quality procedures are constantly monitored and updated to assure that only the highestand most consistent quality products are supplied to our valued customers.

Application and Case

Deluge Alarm Valve are used in fire protection system, HVAC system, plumbing, gas system etc.Fire Protection Alarm Valve are used in many projects , such as China Taiwanese Building 101, Xiamen Building,Wuhan Expo Building and other famous landmark projects.