泄压持压阀 500X

产品详情

产品简介：

泄压持压阀一般分为隔膜阀和活塞阀两大类，本公司生产的泄压持压阀口径在DN400mm以下者采用隔膜型，口径在DN450mm以上者采用活塞型，两者之动作原理类似。泄压持压阀在给水管线上能有效地将超过导阀安全设定值的压力泄压释放，防止对管线与设备因超压而损坏。该阀主要用于高层大楼消防测试循环系统的泄压，以防止水压过高造成系统故障。Products Introduction:Decompression or sustaining valves are usually divided into diaphragm valves and piston valves two categories, the caliber of the  company’s production bellows DN500 using diaphragm type, and DN600 more in the use of piston type, whichever is the principle of similar moves. In the water supply pipeline, decompression and sustaining valves can release the pressure effectively which over the safety valve settings, prevent the pipeline and equipments are damaged by the excess pressure. The valves are mainly used in the decompression of the fire protection test circle system; prevent the system failure because of the excess pressure. 主要零部件材质：Material of Main Parts: 

序号Sequence Number	部件名称Part Name	材质Material
1	阀体Body	灰铸铁Cast Iron
2	轴套Busing	不锈钢Stainless Steel
3	阀座Seat	青铜Bronze
5	密封Seal	EPDM
6	阀板Disc	灰铸铁Cast Iron
7	垫片Flake	EPDM with Nylon
9	螺母Bonnet	灰铸铁Cast Iron
10	弹簧Spring	不锈钢Stainless Steel
11	转轴Stem	不锈钢Stainless Steel

               主要性能参数Main Performance Parameters:隔膜式：DN20-400活塞式：DN450-800

公称压力Nominal Pressure PN（MPa）	1.0	1.6	2.5
法兰连接标准Flange Design Standard	GB/T 17241.6-1998		GB/T9113.1-2000
壳体试验压力Shell Testing Pressure（MPa）	1.5	2.4	3.75
密封试验压力Sealing Testing Pressure（MPa）	1.1	1.76	2.75
出口压力可调范围Pressure of Export（MPa）	0.09~0.8	0.10~1.2	0.15~1.6
工作温度Working Temperature	0℃~80℃
适用介质Suitable Mediums	水Water

 主要外形尺寸和连接尺寸：Outline Dimensions & Connection Dimensions:

公称通径Nominal DiameterDN (mm)	L	A	A1	H	H1	F
20	180	330	130	550	460	116
25	180	330	130	550	460	116
32	180	330	130	550	460	116
40	240	345	135	610	516	170
50	240	345	135	610	516	170
65	250	355	140	625	520	180
80	285	360	146	645	538	210
100	360	400	156	750	596	275
125	400	420	170	808	655	310
150	455	435	186	864	710	355
200	585	480	206	1135	805	460
250	650	530	226	1185	855	500
300	800	575	246	1325	955	580
350	860	620	275	1385	990	650
400	960	635	286	1445	1030	715
450	970	665	320	1325	905	780
500	1075	695	348	1430	960	830
600	1230	720	372	1565	1020	920
700	1650	770	422	1755	1160	980
800	1750	805	458	2230	1515	1050