ZZYVP Nitrogen pressure reducing valve manufacturer, factory and supplier in China. ZZYVP Nitrogen pressure reducing valve (referred to as nitrogen valve) with a conductor, the valve does not need additional energy, the use of the medium to be adjusted (nitrogen) its own energy as a power source, the detection actuator of the conductor is introduced to control the valve spore position, change the flow of the medium flowing through the valve, so that the pressure after the valve is constant, the whole machine has the characteristics of sensitive action, small control pressure fluctuation, energy saving. ZZYVP Nitrogen pressure regulator is suitable for use as nitrogen supply valve of nitrogen sealing device.
ZZYVP Nitrogen pressure reducing valve can work without electricity and air supply. ZZYVP Nitrogen pressure regulator is a kind of energy-saving pressure control valve which utilizes self-pressure changes of adjusted medium to realize automatic adjustment and constant value of pressure after valve. ZZZYVP Nitrogen pressure reducing valve applicable medium: non-corrosive gas.
ZZYVP Nitrogen pressure reducing valve can set target pressure on the director during operation, so it is convenient , quick ,labor-saving and time-saving. ZZYVP Nitrogen pressure reducing valve has Sensitive reaction, can detect minimum pressure and pressure changes(e.g.50mm water column pressure),decompression ratio is high, maximum decompression ratio is 100:1when the pressure before valve is below 8bar.
ZZYVP Nitrogen pressure reducing valve is twice as much as ZZY self operated control valve, specially applicable for gas decompression occasion, where pressure before valve is 1~8bar and the pressure after valve is below 15KPa.
ZZYVP Nitrogen pressure reducing valve structure
ZZYVP Nitrogen pressure reducing valve pressure range:
| Nominal diameter DN(mm) |
20 |
25 |
32 |
40 |
50 |
65 |
80 |
100 |
125 |
150 |
| The seat diameter DN(mm |
6 |
15 |
20 |
25 |
32 |
40 |
50 |
65 |
80 |
100 |
125 |
150 |
| Coefficient (KV) |
0.32 |
4 |
5 |
8 |
12.5 |
20 |
32 |
50 |
80 |
125 |
160 |
320 |
| pressure range KPa |
0.5-100 |
| Nominal pressure PN(MPa) |
1.0 1.6 |
| Working TemperatureT(℃) |
-40～80 |
| Flow characteristic |
Quick opening |
| Adjusting error (%) |
≤5 |
| Allow the pressure drop (MPa) |
1.6 |
1.6 |
1.1 |
0.4 |
0.6 |
| Effective area (cm2) |
200 |
280 |
400 |
| Leakage |
Class IV；Class VI |
ZZYVP Nitrogen pressure reducing valve installation:
1, ZZYVP nitrogen supply valve 2, pressure gauge 3, breathing valve 4, ZZVP nitrogen relief valve 5, feed 6, discharge
How does ZZYVP Nitrogen pressure reducing valve work:
1.At the beginning, main valve spool of ZZYVP Nitrogen pressure reducing valve keeps closed under spring11 action force. Director 08 keeps open under spring 17 action force.
2. The medium flows into control valve under arrow direction, through relief valve 06, flow to director 08, through director 08 and throttle valve 13,flow to actuator 07 diaphragm chamber below. The pressure from actuator07 diaphragm chamber below is rising. The main valve will open under pressure. The medium flows into the valve,through pressure tap 09 and 21,then flow into the actuator07 diaphragm chamber above and director 08 diaphragm chamber above.
3.When the pressure P2 after valve is rising, the pressure P4 acting on the actuator 07 diaphragm chamber above is rising, main valve opening degree is reducing and pressure after valve is reducing(initial adjustment). Meanwhile,the pressure P6 acting on the director 08 diaphragm chamber above is rising and director 08 opening degree is reducing. The pressure P5 into actuator 07 diaphragm chamber below is reducing. The ZZYVP Nitrogen pressure reducing valve main valve opening degree is reducing further and the pressure after valve keeps reducing(fine adjustment).
4.When the pressure P2 after valve is reducing, the pressure P4 acting on the actuator 07 diaphragm chamber above is reducing.Main valve opening degree is increasing,and pressure after valve is rising(initial adjustment). Meanwhile, the pressure P6 into director 08 diaphragm chamber above is reducing , director 08 opening degree is increasing, and pressure P5 into the actuator 07 diaphragm chamber below is rising. The main valve opening degree is increasing further and the pressure after valve keeps increasing(fine adjustment).
5.The main valve spool of ZZYVP Nitrogen pressure reducing valve and director 08 won’t stop working until it reaches the set value. At this moment, the pressure after valve is set value, dynamic decompression can be realized.
