Features:

·   34HD anti-siphon vacuum breaker is designed to protect hose connections from contamination where freezing temperatures are expected, Construction: Brass and Stainless Steel

·   Manual draining is required and provides easy, sure drainage during cold weather.

·   Uses include outside hose bibbs, wash racks, dairy barns and swimming pool areas.

·   Molded rubber diaphragm check valve, For freezing areas.

·   Theft Resistant: Stainless steel stop collar and stop screw theft resistant.

·   One check valve, Nidel Model 34H & 34HD, ASSE 1011 Approved

·   Listed by IAPMO, Approved by Canadian Standards Association