Shanghai Bao Yi Electrical and Mechanical Equipment Co., Ltd. professional agent of marine, land and boiler burners and accessories: 
 Sales Hotline: 13801874668 text, 021 -61,241,138 (39), Fax 021 -61241137, E-mail: by@ranshaoji.com (895941109@qq.com) QQ: 895 941 109, Website: www.ranshaoqi.com.cn 
 Minhang District, Shanghai Xinsong Road 958, Lane Victoria Park Road, Room 1402, on the 18th 
 Product description: 
 Gas valves are used to control the stability of the burner the gas and air pressure for a variety of industrial heating purposes. 
 Pressure relief valve the GDJ comply with EN88, class A, 2 group and the European Union 90/396/EEC gas standard. 
 For a variety of gas medium 
 High control accuracy 
 Safety diaphragm, do not separate the breathing tube 
 Can be used for biogas 
 After the EC test and certification 
 Spring self-operated pressure relief valve GDJ inlet pressure compensation and zero pressure compensation function, so in the case of inlet pressure fluctuations can maintain a constant outlet pressure. Zero pressure cut off function can ensure that no gas flow through the pressure relief valve, the valve pressure surge. 
 Technical parameters 
 Materials Body: Aluminum 
 Diaphragm: NBR 
 Seat: aluminum 
 Stem: plastic 
 Valve plate: NBR 
 Threaded connection Rp meet ISO7-1 
 Type of gas natural gas, city gas, LPG (gas) and bio-methane. 
 For the air medium, the model of GDJ .. L 
 Maximum inlet pressure of 400mbar 
 Outlet pressure range GDJ15 :2-55mbar 
 GDJ20-40 :5-160mbar 
 GDJ50 :5-100mbar 
 Different outlet pressure range can choose different spring. Factory set value of 20mbar 
 Medium temperature range of -20 ° C. .. +70 ° C. 
 The installation and location of this valve can be installed in horizontal pipelines and vertical pipeline. Does not allow installation stress. The installation should be at least 20mm distance to the surrounding buildings. 
 EN746-2 installation requirements according to the requirements of EN746-2, in order to prevent pipeline overpressure in the gas pressure reducing valve upstream and downstream, respectively, to install the super-pressure and automatic shut-off valve SAV and safety relief valve SBV. However, if the pressure reducing valve downstream equipment pressure rating higher than the actual gas pressure in the pressure reducing valve before the pipeline, then the two valves can be omitted.