Cla-Val - Model 33ATD -Air Release & Vacuum Breaker Valve with Air Throttling Device

Designed to protect pipelines from air lock and vacuum collapse, the CLA-VAL Model 33ATD Air Release and Vacuum Breaker Valve eliminates air and prevents vacuum formations in pipelines. A large venting orifice and large float clearances freely exhaust or admit air during pipeline filling or draining.