Water Conservancy Control Valve/Emergency Shut-off Valve

• Media: Water
• Temperature: Ordinary Temperature
• Actuator: Automatic
• Connection: Flanged Diaphragm Valve
• Material: Cast Steel
• Structure: Roof Type Diaphragm Valve
• Model NO.: HZS
• Pressure: Ordinary Temperature
• Flow Direction: Reversing
• Usage: Flow Control
• Standard: GB
• Transport Package: Plywood Case
• Specification: DN15-DN500
• Trademark: HUIZHENG
• Origin: China
• HS Code: 8481804090
• Production Capacity: 50000pieces/Year

Product Description

Product description 
The emergency shut-off valve is a valve used to adjust the direction of water supply in a water supply system that uses fire water and domestic water in parallel. When a fire occurs, a large amount of water is urgently needed for firefighting, and the emergency shut-off valve immediately cuts off the domestic water to ensure sufficient firefighting water: when the fire stop water pressure decreases. The valve opens automatically and is normally open, restoring domestic water supply. This valve eliminates the need for a separate fire-fighting separate water supply pipe network for the system, greatly.
Scope of application
At present, hydraulic control valves are widely used in petrochemical, chemical, gas, natural gas, liquefied petroleum gas, HVAC industry and general industry.ving construction costs and water consumption. The valve has high control sensitivity, safety and reliability, easy debugging and long service life.

Main dimensions

DN(mm)	L	A	A1	H	H1	F
20	180	194	136	342	250	116
25	180	194	136	342	250	116
32	180	194	136	342	250	116
40	240	240	155	395	278	170
50	240	240	155	395	278	170
65	250	255	165	405	298	180
80	285	280	175	430	315	210
100	360	332	195	510	350	275
125	400	375	220	560	365	310
150	455	408	230	585	420	355
200	585	485	255	675	450	460
250	650	550	300	730	470	500
300	800	630	340	760	490	580
350	860	735	415	840	526	640
400	960	788	430	910	570	715
450	1075	850	460	1070	610	780
500	1075	905	490	1135	665	830
600	1230	970	530	1270	725	920
700	1650	1050	560	1460	865	980
800	1750	1135	610	1640	975	1050

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