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Hose Connection Vacuum Breakers for Wall & Yard Hydrants, Brass

Series NF8 Hose Connection Vacuum Breakers are designed specifically for wall and yard hydrants to prevent the reverse flow of polluted water from entering into the potable water supply due to backsiphonage. It consists of brass body construction (NF8) or chrome finish (NF8C), stainless steel working parts, a rubber diaphragm and disc, and a draining stem. The NF8 permits manual draining for freezing conditions. Maximum Pressure:125psi (8.6 bar).


  • Screw directly onto sill cock, with no plumbing changes required
  • Stainless steel working parts for longevity
  • Permits manual draining for freezing conditions
  • Durable rubber diaphragm and disc provides positive seating

Select a Model

Select options below to identify the UPC, Order Code, and Repair Kit for a specific NF8

Approval Information

For approval information, please refer to the products specification sheet. For any other information on product certification and documentation information, please visit our certification partner websites: