www.kingsupply.com 1-866-352-6652 MY CART ( ) Toggle search bar Ground Maintenance Supplies Hose Bibbs (Faucets) Hand Soap, Sanitizers & Dispensers Dog Waste Disposal Stations and Supplies Propane Supplies Faucets Shower and Urinal Valves Backflow Preventers Coin-Op Shower Equipment Search... Search Submit SELECT A CATEGORY CLOSE MENU Our Products Ground Maintenance Supplies Hose Bibbs (Faucets) Hand Soap, Sanitizers & Dispensers Dog Waste Disposal Stations and Supplies Propane Supplies Faucets Shower and Urinal Valves Backflow Preventers Coin-Op Shower Equipment Nav Menu 3 Nav Menu 4 Nav Menu 5 Nav Menu 6 Nav Menu 7 Nav Menu 8 Home > Backflow Preventers > Lead Free Dual Check Valve & Atmospheric Vent - (VB 3NL) ASSE 1024 Lead-Free Dual-Check Backflow Preventers Alternative Views: Our Price: $21.95 Product Code: BFP6DNL Qty: Description Technical Specs Lead-Free Solid Brass Dual Check Valve w/Intermediate Atmospheric Vent Back-flow Preventers meet IAPMO-UPC & ASSE 1052 standards. They effectively prevent back siphon of water into the potable drinking water system at the hose bibb, venting any higher back-pressure to the atmosphere. This method is most effective to prevent cross-connection between campsites or other devices attached to hose bibbs in the same water system. Great for campsites or marina water hookups.**Once the back-flow preventer is installed with the factory screws, it cannot be removed. We recommend the #SS20 Stainless Steel Removable Locking Screws. This item allows back-flow preventers to be removed for service of the hose bibb, yet remain tamper-proof. Lead Free Solid Brass UPC Approved Built to ASSE 1052 standard Breakaway Screw Prevents Removal **Required For All Marinas in the State of Ohio May be used in place of Spec. ASSE 1024 per ODH Regulations Related Items Stainless Steel Locking Screw - (5718010) Lead Free SelfDraining Backflow Preventer - (VB 4NL) Lead Free Back-Flow Preventer - (BV6NL) Frost-Proof, Self-Draining Back-flow Preventer - (VB 2 NL) Our Price: $13.50 Our Price: $5.95 Our Price: $11.95