Brass to break the vacuum valve is widely used in all kinds of easy to produce vacuum system, such as fire, swimming pool, green land irrigation, water supply and drainage, docks, power plants, metallurgy, shipbuilding and other fields, form a negative pressure in the system when inhaled air protection system in time, in a pipe or container due to system run or stop the negative pressure or vacuum gradually rise, can automatically open, destroy the vacuum effect,Make the pipeline and other equipment not to produce deflate, concave crack and other phenomena, in order to protect the safety of equipment.

Technical parameter

Working pressure: 16bar
Sealing pressure: 0.2bar
Working temperature: 0-110 ℃
Working medium: water or mixture of water and glycol (the concentration of glycol is not more than 50%)
Interface size: 1 / 2 "thread standard: ISO 228 / 1

When the system produces negative pressure, the pressure difference between atmospheric pressure and system pressure acts on the seal, pushes the vacuum valve seal to break, opens the sealing surface and introduces the outside atmosphere into the system, so that the system pressure increases and destroys the negative pressure, until the vacuum valve seal falls and seals again, and the outside atmosphere no longer enters the system.When the system is under positive pressure, the working medium enters the upper part of the seal and presses the seal downward. The greater the system pressure is, the tighter the seal is to ensure that the vacuum valve is watertight when the positive pressure is broken.

Technical parameter

Working pressure: 16bar
Sealing pressure: 0.2bar
Working temperature: 0-110 ℃
Working medium: water or mixture of water and glycol (the concentration of glycol is not more than 50%)
Interface size: 1 / 2 "thread standard: ISO 228 / 1