Nitrogen seal device ZZYVP is mainly used for tank top gas pressure constant control, in order to protect the tank material is not safe nitrogen seal device nitriding and storage by ZZDQ quick release valve and ZZV valve is composed of two micro pressure. The quick release valve by the pressure controller and ZMQ-16K type single seat valve. The pressure in the tank rises to the set pressure relief valve opened quickly, quickly put in the tank, the excess pressure relief. Regulating valve to reduce the pressure in the tank pressure, open the valve, to the tank filled with nitrogen. The regulator must be used in pressure 0.1Mpa pressure micro pressure, the pressure is higher, you must install the ZZYP type pressure regulating valve of the pressure regulating valve pressure drop to below 0.1Mpa can use. Nominal pressure 0.1Mpa, pressure can be set according to the section, from 0.5Kpa to 66 Kpa, the temperature of the medium temperature ≤ 80 ℃.
Characteristic
1, nitrogen sealing device for (discharge) nitrogen pressure set is convenient, and can be carried out under the condition of continuous production;
2, the nitrogen pressure set range, low to 0.5Kpa (50mm.w.c), up to Kpa, the ratio reached 132 times, the effective area of diaphragm pressure detection, set the spring stiffness is small, action extremely sensitive.
3, adjust:
(1) nitrogen pressure adjustment: in ZZV type micro pressure control valve pressure regulating range selected a set value such as 1Kpa (100mm.w.c), by adjusting the adjusting screw 2 to change the spring 3 pre compression (tension) to achieve;
(2) the discharge of nitrogen pressure adjustment: in the part of the pressure controller ZZDQ the quick release valve in, by adjusting the seat 3, change the spring pre compression reached 4. Generally avoid nitrogen seal device frequent opening and closing the set value, the discharge of nitrogen from nitrogen pressure value, such as 2Kpa (200mm.w.c);
(3) the breathing valve high value adjustment: in the two set value after adjustment, in order to avoid breathing valve frequent opening and closing, breathing valve set value should be greater than the pressure set value.
Parts material
Part name | Part name |
The valve body | ZG230-450 ZG1Cr18 Ni9Ti |
The valve stem, valve core, valve seat | 1Cr18 Ni9Ti |
Diaphragm | Nitrile rubber reinforcing polyester fabric |
Spring | 60Si2Mn |
Bellows | 1Cr18 Ni9Ti |
The main technical parameters of the shape and size of the
Nominal diameter DN | 20 | 25 | 32 | 40 | 50 | 65 | 80 | 100 |
A | 192 | 232 | 308 | |||||
H | 629 | 631 | 652 | 666 | 689 | 797 | 837 | 1050 |
L | 150 | 160 | 180 | 200 | 230 | 290 | 310 | 350 |
G(Kg) | 18 | 19 | 21 | 23 | 25 | 37 | 50 | 59 |
Flange size unit:mm
Nominal diameter DN | 20 | 25 | 32 | 40 | 50 | 65 | 80 | 100 |
D | 105 | 115 | 140 | 150 | 165 | 185 | 200 | 220 |
D1 | 75 | 85 | 100 | 110 | 125 | 145 | 160 | 180 |
B | 16 | 18 | 20 | 22 | ||||
n-ф | 4-14 | 4-18 | 8-18 | |||||
f1×D2 | 2×56 | 3×65 | 3×76 | 3×84 | 3×99 | 3×118 | 3×132 | 3×156 |
