Fisher 289L reducing valve, fisher, including the Model 289 Series Regulator: fisher 289L pressure reducing valve, Fisher fisher 289H gas relief valve 13537502453 Miss Li the 0755-28145886 Fisher289L Description: the diffuse pressure setting simple back seat closed tight relief set pressure of up to 7bar diffuse flow up to the 3200Nm3 / h can be installed in any location is suitable for all types of industrial and residential users can be used for natural gas, artificial gas, liquefied petroleum gas, air and other gases structure is simple, reliable and Fisher289H, DN25 Series Features: diffuse pressure setting simple back seat close tightly relief set pressure of up to 7bar diffuse flow up 3200Nm3 / h can be installed in any position suitable for all types of industrial and residential users can be used for natural gas, artificial gas, liquefied petroleum gas , air and other gases simple structure, reliable performance and technical parameters of the project indicators inlet pressure 7bar set relief pressure 0.01 ~ .17 bar stocktaking 0 ~ 3200Nm3 / h Operating temperature -29 ~ 66 ℃ connection size 1/4, 3/4 1,2 NPT threaded connection weight 0.34,0.7,1.8,6.8 Kg