The series control valves of NFCV and NPCV(L) is designed for use in ventilation systems where radioactive substances are present.

The series dynamic differential pressure control valve of NPCV(L) is a room differential pressure control control valve. The shell is cylindrical, equipped with controller and electric actuator, suitable for room pressure control, the controller can judge the process of opening and closing the door by connecting the door magne, can also use intelligent identification to open and close the door without the door magnetic signal, to reduce unnecessary valve adjustment caused by opening and closing the door.

NPCV(L) has 5 specifications , Recommended air volume coverage 10-3,200 m3/h, the recommended air volume per specification is shown in the table below, the recommended work pressure difference is 150-750Pa.

The series of NPCV(L) air volume and working pressure difference parameter table

Install

Can be directly installed in the header and tee downstream, no straight pipe section requirements. It can be installed horizontally, vertically or obliquely, The measured value of NFCVR air volume deviates from the true value is ≤3%.

Stress is irrelevant

In properly designed and installed systems，air Volume Control Deviation is ≤5%.

High tightness

In accordance with the EJ/T 1096-1999 《Sealed chamber sealing classification and inspection methods》, the relevant provisions，Under the pressure of 3000 pa, the air mixing capacity of the valve body meets the allowable value of the standard of the 2-stage valve body. In accordance with the NBT 20039.2《relevant provisions of the code for Nuclear Air and gas treatment》，the valve sheet meets the leakage requirements of Class Ⅲ.

Quality of material

304(316L) Stainless steel or carbon steel; Fire resistance, high and low temperature resistance, corrosion resistance.

Actuator lost power reset

Provide actuator loss of power valve position hold (standard) and loss of power after full open or full closed options.

Special occasions

If there are special requirements, can be customized according to the project requirements.