EN500X Pressure Discharge & Sustain Valve is used in the pipeline system to prevent of surpassing pressure or to keep the pressure of it, to reduce the water hammer's shock after the pump is closed and also used as a water hammer remover in the large water supply system. A self cleaning filter screen is placed on the inlet of the valve's control system, which stops the suspension grains of the bigger specific gravity and diameter from going into the system by means of the bigger specific gravity of the fluid to ensure the main valve's water supply pressure at the upstream at the set value, and to get the system circulated smoothly without any resistance. This valve features by sensitive open-close, safety, reliability, stable motion and long duration.

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	235	285	360	400	455	585	650	800	860	915	980	1075
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
PN16	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

Note: Either elastic seat ring sealed gate valve or butterfly valve can be selected in the schematic of installation. Recommend to select the butterfly valve in case of =DN350

Nominal Pressure	1.0MPa	1.6MPa	2.5MPa
Shell test pressure	1.5MPa	2.4MPa	3.75MPa
Sealed test pressure	1.1MPa	1.76MPa	2.75MPa
Suitable temperature	≤80℃
Suitable medium	water