Back pressure at port 鈶?adds to the effective relief setting at a ratio of 鈶?plus the pilot ratio times the back pressure. Reseat exceeds 85% of set pressure when valve is standard set. Settings lower than the standard pressure may result in lower reseat percentage. Zhejiang Huayi Machinery Co., Ltd. in order to "create value for customers, to enable enterprises to sustainable development" for the mission, adhering to the "professional, efficient, win-win," the core concept and the "entrepreneurship, creativity, innovation" business philosophy, to become internationally competitive precision manufacturing enterprises. Competitive advantage 锛歅recision metal parts manufacturing leading in China With high precision machining, testing, testing equipment, is committed to providing first-class products. low cost manufacturing锛孭rofessional R & D team and after-sales service.Counterbalance Valves quotation website:http://www.dahydraulics-valves.com/hydraulic-cartridge-valve/counterbalance-valves/