Atmospheric vacuum breakers. The purpose of a vacuum breaker is to stop back siphonage. The atmospheric vacuum breaker consists of a check valve member and an air vent that is normally closed when the ...

Major players in the vacuum valve market are VAT Group AG, MKS Instruments, CKD Corporation, V-TEX Corporation, ULVAC Inc. , SMC Corporation, HVA LLC, Kitz SCT Corporation, Pfeiffer Vacuum ...

Eaton also developed a tool for its customers to actuate the leak-check mechanism on their assembly lines, allowing for testing through pressurization or a vacuum. Eaton’s 3-in-1 battery vent ...

EPA Changes Rules for Some Gasoline Dispensing Facilities. Jun 30, 2008; EPA is amending the pressure and vacuum vent valve cracking pressure and leak rate requirements for vapor balance systems ...