[YK43F pilot gas valve piston】 the Shanghai standard Bo relief valve factory, cnjianyafa (http://www.cnjianyafa.com) production YK43F pilot piston gas valve http://www.cnjianyafa.com/jianyafa / yk43x.html is a the pilot piston valve, is composed of two parts of the main valve and pilot valve. Set outlet pressure adjusted by adjusting the spring pressure, the use of the diaphragm sensing export pressure change, driven by opening and closing the pilot valve piston to adjust main valve throttling the parts flow area size, vacuum regulator. Mainly used for gas pipelines, such as air, nitrogen, oxygen, hydrogen, liquefied petroleum gas, natural gas and other gases. Implementation of standards design specifications: GB / T 12244 structure length: GB / T 12250 Flange connection: JB / T 79 test and inspection: GB / T 12245 Product ID: GB / T 12220 supplier specifications: JB / T 7928 【 Product Model】 YK43X/F-16C (25,40,64,100,160) YK43X/F-16P (25P, 40P, 64P, 100P, 160P) [belongs] the Shanghai gas relief valve http://www.cnjianyafa.com the standard Bo relief valve Co., Ltd.