2Pcs 1-1/2 Inch NPT ABS in Line Vent,Black Air Admittance Valve to Prevent Sewer
Working principle:The air vent valve features a spring-loaded design. As water and waste flow through the drainpipe, negative pressure is created within the pipe, causing the seal to lift and allow air to enter.
2 Pcs 1-1/2 Inch NPT ABS in Line Vent,Black Air Admittance Valve to Prevent S…
Working principle:The air vent valve features a spring-loaded design. As water and waste flow through the drainpipe, negative pressure is created within the pipe, causing the seal to lift and allow air to enter.