Fully reversible (max. differential pressure 0.3 bar) Sliding tail piece facilitates retro-fitting Liquid filled element ensures accuracy throughout the operating range Positive "off" position allows radiator to be removed without draining the system down Tamperproof setting - valve can be set to pre-determined setting and cannot be adjusted Economy setting - valve can be set to allow adjustment between specific settings only Made from brass, with chrome plated finish Matching Lockshield valve also available