SJ300X缓闭消声止回阀

 

一、结构及用途 Structure and purpose

该阀主要用于给水系统的水泵出口处，防止介质倒流，水锤及水击现象，该阀兼具电动阀、逆止阀和水锤消除器三种功能，可有效地提高供水系统的安全可靠性，并将缓开、速闭、缓闭消除水锤的技术原理一体化，防止开泵水锤和停泵水锤的产生，只需操作水泵电动启闭，阀门即可按照水泵操作规程自动实现启闭，该阀流量大，压力损失小，密封性能可靠，安装维护、调试检查方便、使用寿命长。

Used on the pump outlet of a water supply system to prevent medium＇s back-flow．water hammer and water shock．combining three functions as an elec-tric valve,check valve and water hammer remove r,capable of effectively raisingsafety and reliability of the water supply system,integrating the technical principle of slow-open,speed valve,slow-close removing water hammer and preventing both pump-starting and pump-stopping water hammers from being formed The gate can automatically carry out open-close upon the operation rules of the water pump just by operating the pump t0 open or close electrically This valve features a big flow and a small pressure loss．reliable sealing performance,easy installation,debugging and maintenance and a 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	1448	1956
PN1O	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	185	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		172	172	172	265	265	310	350	460	520	570	695	780	905	1025	1080	1030	1135	1270	1460	1640
H1		106	106	106	210	210	215	245	305	365	415	510	560	658	696	735	610	665	725	865	925

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 or butterfly valve can be selected in the schematic diagram of installation.Recomended to select the butterfly valve in case of≥DN350.