SJ900X紧急关闭阀

 

一、结构及用途 Structure and purpose

该阀用于生活供水和消防供水并联供水系统中，正常情况供生活用水，当火灾发生时消防用水时，阀门自动关闭生活用水，确保足够的消防用水。当消防停止用水时压力减少，阀门自动恢复生活用水，该阀使系统无须另设专门的消防单独供水管网，大大地节省了工程建设成本和日常的用水量。该阀控制灵敏、安全可靠、调试简单、使用寿命长。

Used in the living and fire-fighting merged water supply system It supplies living water at normal condition and．in case of a fire，automatically close the living water and open the fire-fighting one to make it surely enough，and then when fire-fighting water stops and the pressure is reduced，resets the living wa-ter automatically．Thus making the system no need to set an individual fire-fighting water supply pipe network and both engineering construction cost and daily water used quantity greatly saved.It features sensitive control,safety,reliability,simple debugging and long duration

四、主要外形及连接尺寸 Schematic diagram of installation

公称 通径 DN(mm)		20	25	32	40	50	65	80	100	125	150	200	250	300	350	400	450	500	600	700	800
L		180	180	180	203	203	216	241	292	330	356	495	622	698	787	914	978	978	1295	1446	1956
PN10	D	105	115	135	145	160	180	195	215	245	280	335	390	440	500	565	615	670	780	895	1010
	D1	75	85	100	110	125	145	160	180	210	240	295	350	400	460	515	565	620	725	840	950
PN16	D	105	115	135	145	160	180	195	215	245	280	335	405	460	520	580	640	705	840	910	1020
	D1	75	85	100	110	125	145	160	180	210	240	295	355	410	470	525	585	650	770	840	950
PN25	D	105	110	135	145	160	180	195	230	270	300	360	425	485	550	610	660	730	840	955	1070
	D1	75	85	100	110	125	145	160	190	220	250	310	370	430	490	550	600	660	770	875	990
H		342	342	342	395	395	405	430	510	560	585	675	730	760	840	910	1030	1135	1270	1460	1640
H1		247	247	247	278	278	298	313	350	365	420	450	470	490	526	570	610	665	725	865	975

注：安装示意图中弹性座封闸阀或蝶阀任选，建议≥ DN350选蝶阀。

Note：Either elastic seat ring sealed gate valve of butterfly valve can be selected in the schematic diagram of installation.Recommended to select the butterfly valve in case of≥DN350