self-operated-pressure-reducing-valve
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ZZYP TYPE AUTOMATIC PRESSURE REGULATING CONTROLL VALVE

1. Application and feature ZZYP type pressure regulating valve is a self-regulating actuator product that reply on the medium's energy to realize regulation fucntion without any extra energy . The most important feature of the product is that it can work without electricity and gas power which is very saving energy . And we can adjust the pressure value when it is working . This valve is widely used in oil, chemical, electricity, metallurgy, food, light textile, machinery and residents buildings and etc industries to control the gas, liquid and steam to reduce pressure, inlet pressure...

JONENG VALVES CO.,LIMITED Drawing-b. is pressure regulating valve used for controlling inlet pressure . Mode of action is pressure open type .The working principle is : medium flow into the valve body as the direction of arrow, The other way is used when the medium is steam , the medium go through condenser and goes into the actuator and act on the diaphragm, at the same time the valve core's place is also changed, in this case the valves realize to reduce pressure and steady pressure . If inlet pressure is increased, the power acting on diaphragm is increasing accordingly, then the spring...

3.Main technical data and property index ,material 1)Main technical data and property index 2) Pressure regulating rang Pressure regulating rang has several stages, details please see the form of Main technical parameters and property index. It is better to choose the middle value of the pressure range. (refer form1). 3) Outlet pressure regulating valve and relation between inlet pressure and out pressure. Automatic regulating valve is a regulating system and there is some requirements for reducing pressure . For B type outlet pressure regulating valve , in order to guarantee the outlet...

Sharp dimension drawing

5)Main parts' material (Form 4) Form 4 Valve core structure types Single-seat regulating valve double-seat regulating valve sleeve regulating valve Valve body working temperature and allowed pressure

4. Installation ,use and maintenance 1)Installation When the valve is working in gas or other low viscous liquid medium (normal temperature (≤80C) , the valve is installed on horizontal direction in upright direction like pneumatic diaphragm regulating valve. Details as drawing 3 . 4.self-operated pressure regulating valve Installation : The medium is gas or other low viscous liquid

If the medium is steam , the regulating valve must be installed on horizontal pipe in inverted direction . As drawing 4 . 1.globe valve 2.6. pressure gauge Installation : the medium is steam

When you install the valve pleas note these points: A)Condenser must be higher than valve's actuator but lower than outlet's connecting pipe ( for outlet regulating valve) or inlet's connecting pipe ( for inlet regulating valve) , to guarantee the condenser is filled with condenser liquid . B)Pressure measuring point should take a suitable place , inlet pressure valve should be further than 2 times of the pipe diameter , outlet regulating valve should be further than 6 times of pipe diameter. C)In order to convenient for maintenance and operation ,there is be leaving some space for the...

After the regulating valve is running normally, generally maintain workload is very small, only need to observe the pressure value is whether at the proper rang that suit for your application . And observe whether the stuffing box and actuator is leaking . If it is leaking, please tighten or replace padding and diaphragm. Form 5 Fault phenomenon Reason Outlet pressure is changing 1.valve core get stuck when inlet pressure 2.Valve rod, plush rod get changes stuck 3.Entrance pipe locked. Outlet pressure can't 1.set spring stiffness too large decrease, staying higher 2.Valve dia. too big than...

H How to order When ordering please offer these information: Type Nominal Size Nominal pressure Signal Range Action mode Medium data Working temp. Rated flow rate Max inlet pressure Min inlet pressure Normal inlet pressure Max flow Min flow Normal flow Material : valve core Valve body Parts inside Padding pipe size Max outlet pressure Min outlet pressure Normal outlet pressure Liquid viscosity Liquid severe Gas severe Remarks Other requirements like collision resistant Regulating pressure range Regulating temperature range Pressure difference range Micro pressure difference range

I. ZZYP regulating valve model Example 050ZZYP10B12S0280-350P means the valve diameter is 50mm, valve seat pressure is 1.0MPA,the valve is outlet pressure regulating valve, the flanges is standard type, without condenser, pressure regulating range is 280-350KPA, the valve material is stainless steel.