Designed for use with RegO® Back Check Valves to provide fast filling of bulk storage tanks. Also may be used as a spare or replacement part.

These single check filler valves must never be installed directly into container couplings. They must be used with the appropriate back check valve to comply with NFPA Pamphlet #58.
Unit of Measure



  • Specifically for use with RegO® Back Check Valves.
  • 6584C stem assembly reduces turbulence during filling and promotes higher filling rates.
  • Specify RegO® Filler Valves on all your original tank purchases to insure quality and dependable performance.


Upper Body Material

N/A Brass

Lower Body Material

N/A Brass

Springs Material

N/A Stainless Steel

Washer and Seat Discs Material

N/A Synthetic Rubber

Cap Material

N/A Plastic


ACME Hose Connection

N/A 1-3/4 in

Outlet Connection M. NPT

N/A 1-1/4 in

Wrench Hex Flats

N/A 1-3/4 in

For Use With Back Check Valve

N/A 3176

Product Type

N/A Single Check Filler Valves


N/A RegO

Propane Liquid Capacity

Propane Liquid Capacity at 5 psig

N/A 23 gpm

Propane Liquid Capacity at 10 psig

N/A 33 gpm

Propane Liquid Capacity at 25 psig

N/A 52 gpm

Propane Liquid Capacity at 50 psig

N/A 74 gpm