Drayton's TRV4 Classic and TRV4 White have achieved the highest A Rating for energy efficiency under the certification scheme of the European Valve Manufacturers' Assocation (tell.eu). In addition they set the standards for design, performance and quality. The range includes Lockshield and Pushfit packs to suit most domestic and commercial heating systems.
For singlepipe commercial systems
Satinnickel 3/4" straight valve with high flowrate