Factory Set Pressure Reducing Reg-U-Matic® Control Valve - Angled Body Female 2-1/2" NPT Inlet and Outlet
MODEL 4051-FS2 Cast brass valve with rising stem, internal parts of brass, and chrome silicon. Red aluminum handwheel. Regulates pressure under both flow and no-flow conditions—female 2-1/2" N.P.T. inlet and outlet.
MODEL 4051-FS2-GV Cast brass valve with rising stem, internal parts of brass, and chrome silicon. Red aluminum handwheel. Regulates pressure under both flow and no-flow conditions. The valve features a 2-1/2" grooved inlet and outlet.
FEATURES
Application: Control Valve
Reduces pressure under flow and no-flow conditions.
Static pressure rated up to 400 PSI (20.7 BAR).
Flow rated up to 500 GPM (1892.7 LPM).
Low-torque manual open/close requires less than 15 ft/lbs.
Built-in Supervisory Switch.
Four pressure gauge taps on both inlet and outlet sides.
Built-in automatic check valve.
UL listed, complies with NFPA-13.
CALIFORNIA WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov - Learn More about this warning
Downloads
Resource Type
Title
Description
File Size
Action
Submittals
Submittal 4051-FS2 Control Valve (pdf)
Factory Set Pressure Reducing Reg-U-Matic® Control Valve - Angled Body Female 2-1/2" NPT Inlet and Outlet
3 MB
Brochures/Flyers
Potter Roemer Mechanical Brochure (pdf)
Potter Roemer Mechanical Products - Pressure Reducing Valve, Hose & Gate Valves, Flush Connection, Wall & Freestanding Connections, Hydrants, Roof Connections, Pump Test Connection, Hose Rack Assemblies, Hose & Storage, Nozzles, Hose Cabinets, Extinguisher Cabinets, Valve Cabinets, Fire Pro Products [L# L1001700, Feb 2026]