Valve: Backflow Preventer

Manufacturers:  Valves: Backflow Preventer

Manufacturers: Metal: Past and Present

  1. Ames Fire
  2. Apollo Conbraco
  3. Cash Acme
  4. Febco: Watts
  5. Flomatic
  6. Watts
  7. Zurn: Wikins: Febco

Different design:   ClaVal

Different design:  Woodford

Manufacturers: Plastic: Past and Present

  1. Oatey – manufacturers a “Backwater valve”
  2. Tondiamo – manufactures a “Drain Backflow Preventer”

Backpressure Valve: (internal link)

Backpressure regulator: Baird Mfg, Belgas, Bi-Lok, Cash Valve, Fisher: Emerson,
Generant (Texas Family of Companies), Installoy, Jordan Valve, Kimray, Stra-Val, Swagelok, and others.

Navigate website: links are listed below: