Windsor XL Control Valve


  • Manual radiator valve ideal for one-pipe steam radiators
  • 1″ NPT x 1″ FIP connections
  • Durable chrome finish
  • Precision milled brass body with hardwood handle
  • Triple-seal stem packing
  • Unfailing brass-to-brass seal at valve seat
  • Suitable for steam and hot water radiators

Windsor XL is made for large-bore installations such as one-pipe steam. Use 1in valves for smaller radiators up to 5000 BTUs and 1 ¼in valves for larger radiators.

With a triple-sealed stem, failsafe double-seal plunger, precision-milled solid-brass construction, and a genuine hardwood handle, Windsor XL is also suitable for use with two-pipe steam and hot water / hydronic heating systems.

Windsor XL is designed, from the inside out, to exceed expectations.

Add Niva One-Pipe Steam TRV with air vent included to add comfort and control to any one-pipe steam heating system.

SKU: IWR-windsor-xl-control-valve Categories: , , , ,


Weight3.3 lbs
Dimensions7.1 × 5.5 × 3.5 in
Pipe connection1″ FIP
Radiator connection1″ NPT
Body materialBrass
Handle materialHardwood
Warranty10 Years

Additional information

Weight3.3 lbs
Dimensions18 × 14 × 9 in

Chrome, Natural Brass, Satin Nickel


1.5", 1"