Breather valve with flame arrestor

According to API 2000 code, BS7244 and EN 12874. The BVFA is designed, manufactured and tested by HITEK

The pressure vacuum relief valves combined with flame arresters are used on liquid storage tanks and other process vessels or systems to prevent structural damage due to excess internal vacuum. Storage tanks are pressurized when liquid is pumped in, compressing the existing vapor or when rising temperatures cause increased evaporation or expansion of existing vapor. Conversely, a vacuum condition may be created when pumping out or due to falling temperature. To prevent tank damage, vapor must be allowed into or out of the tank at specified vacuum condition. The volume rate of venting depends upon the tank size, volatility of the tank contents, the pumping rates and the temperature. This is the safe valve to control deflation ( vacuum ) and inflation ( pressure ) of several storage tanks

This valve has functions to intake the air under constant pressure during unloading and rising Temperature, and to discharge the overpressure generated during pouring the liquid and falling Temperature on storage tank. This is the safe valve to control the deflation (vacuum) and inflation(pressure) of several storage tanks.

Housing materials ( breather valve & flame arrester ): Cast Alu( B26 – 319.F), A216 WCB, SS304, SS316

Model: BVFAA ( B26 – 319.F ), BVFAC ( A216 – WCB ), BVFAS ( SS304/ SS316 )

Basic materials 

Cap: SS304
Disc stem: SS304
Screen: SS304
Element: SS304, SS316, SS316L
Size: max 20inch
End connection: Flange – ANSI 150LB
Flame cell: IIA standard or ( IIB, IIC)