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Home > Products > Hydraulic?valve > Pressure relief valve200X

Description Material Performance Product Size Specifications

200X pressure reducing valve is a kind of intelligent valve which can regulate and control the pipeline pressure by using the energy of the medium itself. 200X Zang pressure valve used for drinking water fire water supply and other industrial water supply system, guided by adjusting the vacuum valve, the valve outlet pressure can be adjusted by the king. The outlet pressure change of the valve inlet pressure, inlet flow and change, safe and reliable outlet pressure will be maintained at a fixed value, and can adjust settings to Zang pressure to achieve according to needs. The valve has the characteristics of accurate decompression, stable performance, safety and reliability, convenient installation and adjustment, and long service life.
Note: parameters are for reference only, or are not full. Valve can

Part name	Part material
Valve body valve cover	CF8,CF8M,WCB,QT450,HT250,HT200
Valve seat disc	F304,F316,Copper alloy
Sealing ring O ring	PTFE,Nitrile rubber
The stem	F304,F316,2Cr13
Spring	50CrVA
Needle valve	Stainless steel, copper alloy
Globe valve	Stainless steel, copper alloy
Float valve	Stainless steel, copper alloy
Micro filter	Stainless steel

Nominal pressure(Mpa)	Shell test pressure(MPa)	Seal test pressure(MPa)	Maximum inlet pressure(MPa)	Adjustable outlet pressure(MPa)	Applicable medium	Medium temperature(℃)
1.0	1.5	1.1	1.0	0.09-0.8	water	0-80
1.6	2.4	1.76	1.6	0.10-1.2
2.5	3.75	2.75	2.5	0.15-1.6

DN	20	25	32	40	50	65	80	100	125	150	200	250	300	350	400	450
L	150	160	180	200	203	216	241	292	330	356	495	622	698	787	914	978
H1	179	179	179	210	210	215	245	305	365	415	510	560	658	696	735	735
H	342	342	342	395	395	405	430	510	560	585	675	730	760	840	910	910

When the valve from the inlet water, the flow through the needle into the main valve control room, outlet pressure through the catheter to guide valve. When the outlet pressure is higher than the value of the pilot valve, the pilot valve is closed. Control room to stop drainage, at this time the main valve control room pressure to rise and close the main valve, the outlet pressure is no longer elevated.
When the valve outlet pressure is reduced to the pilot valve spring, the pilot valve opens, the control room to the downstream drainage. Due to the amount of water drainage system is greater than the valve guide valve, the main valve control room pressure drop. Inlet pressure to open the main valve. In the steady state, the control room inlet and drainage are the same, the main valve opening is constant, and the outlet pressure is stable.

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DN	20	25	32	40	50	65	80	100	125	150	200	250	300	350	400	450
L	150	160	180	200	203	216	241	292	330	356	495	622	698	787	914	978
H1	179	179	179	210	210	215	245	305	365	415	510	560	658	696	735	735
H	342	342	342	395	395	405	430	510	560	585	675	730	760	840	910	910

DN	20	25	32	40	50	65	80	100	125	150	200	250	300	350	400	450
L	150	160	180	200	203	216	241	292	330	356	495	622	698	787	914	978
H1	179	179	179	210	210	215	245	305	365	415	510	560	658	696	735	735
H	342	342	342	395	395	405	430	510	560	585	675	730	760	840	910	910

DN	20	25	32	40	50	65	80	100	125	150	200	250	300	350	400	450
L	150	160	180	200	203	216	241	292	330	356	495	622	698	787	914	978
H1	179	179	179	210	210	215	245	305	365	415	510	560	658	696	735	735
H	342	342	342	395	395	405	430	510	560	585	675	730	760	840	910	910