Pressure Reducing Valves (Factory Set)

Pressure reducing hose valves and floor control valves are used to control the pressure of flowing water in standpipe and sprinkler systems.  NFPA requires pressure reducing valves where the inlet pressure exceeds 175 PSI.  These pressure reducing valves are of the factory set variety.  This means an engineer or contractor would fill out a data sheet to the exact specifications of what each valve needs to be set at so that the manufacturer can set the values accordingly and without the possibility of error.

Specifications: 
  • U/L Listed
  • 400 PSI max operating pressure
  • Available in angle or in-line (floor control) configurations
  • Grooved and threaded options
  • Material:  Cast brass
  • Chrome finish is also available (suffix 'C')
  • Custom outlet threads available upon request
  • Various components available: 
  1. Monitor switch adapter add-on (Suffix 'MSA')

  2.  Supervisory switch add-on (Suffix 'SS')

Part Number Size Configuration Finish Notes
ZW4000RB 2½" F NPT x 2½" M NST Angle Rough Brass Female x Male
ZW4000GRB 2½" Groove x 2½" M NST Angle Rough Brass Groove x Male
ZW4000ILRB 2½" F NPT x 2½" M NST In-line Rough Brass Female x Male
ZW4000ILGRB 2½" Groove x 2½" M NST In-line Rough Brass Groove x Male
ZW4004RB 2½" F NPT x 2½" F NPT Angle Rough Brass Floor Control - Double Female
ZW4004GRB 2½" Groove x 2½" Groove Angle Rough Brass Floor Control - Groove x Groove
ZW4004ILRB 2½" F NPT x 2½" F NPT In-line Rough Brass Floor Control - Double Female
ZW4004ILGRB 2½" Groove x 2½" Groove In-line Rough Brass Floor Control - Groove x Groove
ZW4100RB 1½" F NPT x 1½" M NST Angle Rough Brass Female x Male
ZW4100GRB 1½" Groove x 1½" M NST Angle Rough Brass Groove x Male
ZW4104RB 1½" F NPT x 1½" F NPT Angle Rough Brass Floor Control - Double Female
ZW4104GRB 1½" Groove x 1½" Groove Angle Rough Brass Floor Control - Groove x Groove