This assembly is suitable for use in beer and other industries, mounted in 60 ~ 400 cubic fermented tanks, top of the cank of sour tanks. The assembly is made of flange, check valve (air-liquid shunt), heavy hammer automatic exhaust valve (spring regulating valve), heavy hammer prevent vacuum valve (spring type prevent vacuum valve), visual mirror and wash Tank (washing ball) consists. It has a pressure, regulator, prevent vacuum and gas recovery.