Avonflow Baiyilun TRV Co.,Ltd specializes in the development and manufacture of heating and temperature control products. With many years of R & D and production experience, the company has a valuable team with many independent production and a number of professional talents. Baiyilun constant temperature control valves, used in pressure temperature regulator of city heating, hot water system, radiator heating system, underfloor heating system, are equipped with body as automatic constant ...