1.5in DN40 Air Vacuum Relief Valve Exhaust Vent Valve For Agricultural Garde SET
Style: 1.5in DN40, 2in DN50(Optional). 1.5in DN40 Size: Approx.18.5x13cm / 7.3x5.1in. It can avoid air accumulation, prevent the formation of negative pressure, and has good sealing performance at low pressure.