The ACV125 from Liberty Pumps is a Cast Iron Anti-Siphon Check Valve. It can break suction in order to eliminate any unnecessary tank siphonage. 

Technical Specifications:

• Heavy Weight Nitrile Check Ball;
• Floating Polypropylene Check Ball;
• 1-1/4" NPT (Both Ends).

Warranty:

• 3 years manufacturer's warranty