ZZYVP nitrogen sealing devices 

 ZZYVP nitrogen seal device is mainly used for the top of a tank of nitrogen pressure constant control in order to protect the tank material is not nitride and tank safety. Nitrogen sealed device by ZZYP rapid discharge valve and ZZV of micro-pressure control valve composed of two parts. The quick release valve by the pressure controller and ZMQ-16K single-seat shut-off valve. 
 Tank pressure to the set pressure, the quick release valve to rapidly open, the excess tank pressure relief. Micro-pressure regulating valve in the tank internal pressure is lowered to open the valve to the tank filling nitrogen. Micro-pressure regulating valve must be used at pressures below 0.1Mpa pressure field pressure is higher, must install ZZYP pressure regulating valve 


 Technical Specifications 
 The basic design: GB / T 17213.1 
 Test: the ASME B16.104 


 Product Specifications 
 Product Model: ZZYVP 
 Size range: DN20 ~ DN100 
 Pressure rating: 0.1 ~ 1.0MPa 
 Shell material: carbon steel, stainless steel 
 Applicable medium: gas 
 Operation: Automatic 


 【Features】 

 Nitrogen sealing devices for (vent) nitrogen pressure can be set easily, and can be carried out under conditions of continuous production; a wide range of nitrogen pressure set as low as 0.5Kpa (50mm.wc), up to Kpa, 132 times more than the value of pressure detection diaphragm area, set the spring stiffness, the action is extremely sensitive. 
 For nitrogen pressure adjustment: selected within the the type ZZV micro-pressure regulating valve pressure regulator the settings such as 1Kpa (100mm.wc), by adjusting the adjustment screw to change the spring pre compression (tension) amount to achieve; vent the nitrogen pressure adjustment: in ZZDQ rapid discharge valve in the pressure controller part, by adjusting Block 3, change the spring pre-compression reached. Generally open and close frequently to avoid nitrogen sealing devices, vent the Nitrogen settings should stay away from the nitrogen supply pressure value, such as the 2Kpa (200mm.wc); breathing valve high value adjustment: in the two settings to adjust in order to avoid breathing valve to open and close frequently, breathing valve settings should be greater than the pressure relief settings. 

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