SJ500X泄压／持压阀

 

一、结构及用途 Structure and purpose

该阀主要用于管路系统中，以防止管路系统超压或维持管路的压力，当泵关闭后还可以减少水锤冲击。也可用于大型供水系统的水锤消除装置，并且阀门控制系统的进口处装有一个自清洗滤网，利用流体特性，使比重较大、直径较大的悬浮颗粒不会进入控制系统，确保主阀的上游供水压力某一设定值上使系统循环畅通无阻，该阀起闭灵敏、安全可靠、动作平稳、使用寿命长。

Use in a pipeline system to prevent it from surpassing pressure or keep the pressure of it．to reduce the water hammer＇s shock after the pump is closed and also and also used as a water hammer remover for a large water supply system．On the inlet of the valve＇s control system a self cleaning filter screen is placed，which，by means of the bigger specific gravity of the fluid，stops the suspension grains of a bigger specific gravity and diameter going into the sys-tern to ensure the main valve＇s water supply pressure at the upstream at a set value to get the system smoothly circulated without any resistance．This valve features sensitive open-close，safety，reliability，stable motion 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
L		180	180	180	203	203	216	241	292	330	356	495	622	698	787	914	978	978
PN10	D	105	115	135	145	160	180	195	215	245	280	335	390	440	500	565	615	670
	D1	75	85	100	110	125	145	160	180	210	240	295	350	400	460	515	565	620
PN6	D	105	115	135	145	160	180	195	215	245	280	335	405	460	520	580	640	705
	D1	75	85	100	110	125	145	160	180	210	240	295	355	410	470	525	585	650
PN25	D	105	110	135	145	160	180	195	230	270	300	360	425	485	550	610	660	730
	D1	75	85	100	110	125	145	160	190	220	250	310	370	430	490	550	600	660
H		550	550	550	610	610	625	645	750	808	864	1135	1185	1325	1385	1445	1325	1430
H1		460	460	460	516	516	520	538	596	655	710	805	855	955	990	1030	905	960

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.Recommended to select the butterfly valve in case of≥DN350