CBTLYSK 1inch automatic air vent valve, air release valve for agricultural irrigation systems, vacuum valve made of PA material

1 inch Air Release Valve, NPT Thread Connection,Water Tank Air Release Valve, Continuous Venting，Agricultural Industrial Exhaust equipme

Joywayus Brass Automatic Float Valve Kit 1/2"G Air Bleeder Release Vent Valve & 1/2"G Female × 1/2"NPT Male Pipe Fitting Connector Adapter