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and low head loss
Reinforced with scrim
model DBF-04-131-15-M2
Use two 1/2 meter (19
Watts 774DCDA-DOSY-GPM 4 - Part of the 774DCDA Series ground-shipping and low head lossThis 4 inch double check detector backflow preventer assembly is designed to prevent the reverse flow of fire protection substances and water of non potable quality from being pumped or siphoned into the potable water supply due to backsiphonage and or backpressure in accordance with national plumbing codes and water authority requirements. It is ideal for protection at cross connections identified as non health hazards such as on fire protection
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