VALVE

  There are   bellows seal gate valves ,   bellows seal globe valves ,   bellows seal Y type globe valves   produced according to ANSI/DIN standards with casted or forged body in various kinds of materials to suit different working conditions. The production of bellows seal valves mainly include casting/forging, machining, assembling, testing, painting and packing. The castings/forgings of  bellows seal valves  will pass the examination first to ensure the materials and dimensions. If one casting has defect, it will be rejected. Castings without defect will be machined precisely in the work shop according to the confirmed technical drawings and standards. After machined, all parts such as body, bonnet, disc, stem, bellows and yoke will be assembled properly.   After assembly, the  bellows seal valves  should pass all the test include shell test, seal test, PMI test, dimension examination and other test request by clients. Sometimes, third party inspections are carried out by third part

  A   Thermostatic Radiator Valve   (or TRV) is a valve which is fitted to a radiator in a hot water heating system that is self-regulating (sets the temperature of the radiator automatically) based on the temperature of the room. It controls the room temperature by altering the flow of hot water to the radiator. In simple terms, it is a valve that can be set by the homeowner to turn on and off the radiator (when the heating system is active) based on the temperature of the room. This allows a level of temperature control in every room of the house, which one would not normally be able to achieve, even with a thermostat controlling the main heating system. Building Regulations state that all new and modified wet central heating systems must have a TRV fitted to every radiator (apart from one where the room thermostat or programmable thermostat is installed, typically in the hall).. They were invented in Denmark and started to be use initially in the 1970’s. In Europe they are widely u

  After a heating season, you want to ensure that the wall-hung boiler continues to be in its best condition for a long time? Take a look at maintenance and maintenance! I hope to be helpful! Ⅰ、Under what circumstances need to maintain/maintain the boiler?   As the service life increases, the carbon deposits produced by high-temperature combustion, the accumulation of dust brought by the air in the wall-hung boiler, as well as factors such as scale, silt, and microorganisms in the waterway system, will affect the heat exchange and mechanical The moving parts have an adverse effect, which reduces the service life of the boiler and increases the failure rate. Therefore, in order to keep the wall-hung boiler in a good working condition and operate efficiently and economically, it is necessary to regularly maintain the equipment.   Due to the different models of wall-hung boilers selected by different users, the water quality, gas quality and air quality in different regions are also diffe