30w02 Nitrogen Sealing Device

The 30W02 Nitrogen Sealing Device is composed of the control valve, actuator, pressure spring, pilot, pulse pipe and other parts. It is mainly used for maintaining the pressure of gas (generally nitrogen) at the top of the vessel constant so as to prevent the materials in the vessel from contacting the air, volatizing and being oxidized and ensure vessel safety. It is especially suitable for gas sealing protection systems of various large- sized storage tanks. The product has such features as energy saving, agile action, reliable running, convenient operation and maintenance, etc. It is widely used in petroleum, chemical industry, etc.
Body
DN : 15a 20a 25a 32a 40a 50a 65a 80a 100mm
PN : Class150a 300
Flange standard : ANSIa JISa DINa GBa JB
Body material : WCBa CF8a CF3a CF8Ma CF3M
Plug type : Single-seat (P), double-seat (N), sleeve (M)
Plug material :
Hard seal : Stainless steel (304a 316a 316L)
Soft seal : Stainless steel embedded with rubber ring
Stem material : Stainless steel (304a 316a 316L)
Pressure balancing : Stainless steel bellows
Flow characteristic : Quick open
Working temperature : a 80a .