900XEmergency shut-off valve is a kind of valve used in the parallel water supply system of fire water and domestic water, which is used to adjust the direction of water supply. In case of fire, a large amount of water is urgently needed for fire control, and the domestic water shall be cut off immediately to ensure sufficient water for fire fighting; when the pressure of water for fire fighting is stopped and the water pressure is reduced, the valve will automatically open and be in normal open state to restore the domestic water supply. The valve makes it unnecessary for the system to set up a separate fire water supply network, which greatly saves the construction cost and water consumption. The valve has high control sensitivity, safety and reliability, simple debugging and long service life.

900XThe emergency shut-off valve is used in the parallel water supply system of domestic water supply and fire water supply, which supplies domestic water under normal conditions. When the fire fighting water is used, the valve automatically closes the domestic water to ensure enough fire water.
When the fire water supply stops, the pressure will be reduced, and the valve will automatically resume the domestic water supply. The 800X differential pressure bypass valve makes it unnecessary to set up a separate fire water supply network for the system, which greatly saves the construction cost and daily water consumption.

城建、化工、冶金、石油、制药、食品、饮料、环保

Nominal pressure(Mpa)	Shell test pressure(MPa)	Sealing test pressure(MPa)	Applicable media	Medium temperature(℃)
1.0	1.5	1.1	水	0-80
1.6	2.4	1.76
2.5	3.75	2.75

 

Part name	Part name
Body bonnet	WCB
Seat disc	copper alloy
Sealing ring O-ring	Sealing ring O-ring
Stem	2Cr13
Spring	50CrVA
Needle valve	copper alloy
globe valve	copper alloy
Floating ball valve	copper alloy
Microfilter	stainless steel

 

900XStructure diagram of emergency shut-off valve (1. Ball valve 2. Pilot valve 3. Ball valve 4. Needle valve)

DN	L	A	A1	H	H1	F	D mm			D mm
	mm	mm	mm	mm	mm	mm	PN1.0	PN1.6	PN2.5	PN1.0	PN1.6
20	180	292	136	342	247	116	105	105	105	75	75
25	180	292	136	342	247	116	115	115	115	85	85
32	180	292	136	342	247	116	140	140	140	100	100
40	240	330	155	395	278	170	150	150	150	110	110
50	240	330	155	395	278	170	165	165	165	125	125
65	250	350	165	405	298	180	185	185	185	145	145
80	285	365	175	430	313	210	200	200	200	160	160
100	360	410	195	510	350	275	220	220	235	180	180
125	400	455	220	560	365	310	250	250	270	210	210
150	455	475	230	585	420	355	285	285	300	240	240
200	585	530	255	675	450	460	340	340	360	295	295
250	650	623	300	730	470	500	395	405	425	350	355

 

300	800	700	340	760	490	580	445	460	485	400	410
350	860	840	415	840	526	640	505	520	555	460	470
400	960	880	430	910	570	715	565	580	620	515	525
450	1075	930	460	1030	610	780	615	640	670	565	585
500	1075	980	490	1135	665	830	670	715	730	620	650
600	1230	1060	530	1270	725	920	780	840	845	725	770
700	1650	1130	560	1460	865	980	895	910	960	840	840
800	1750	1230	610	1640	975	1050	1015	1025	1085	950	950