Our Windsor XL series is a technically superior valve that allows steam in and condensate out of a one-pipe steam radiator.
Niva One-Pipe Steam TRV adds temperature control to maintain a comfortable ambient temperature and reduce heating bills.
Both ranges are available in three finishes: Satin Nickel, Natural Brass and Chrome.
We recommend 1″ valves for radiators up to 5000 BTUs and 1.25″ valves above that. Niva One-Pipe Steam TRVs are rated for use on systems up to 1.5psi. There’s no need for domestic systems to run above that pressure.