China Brass Spring Check Valve factory Details Brass Valve Body: High-density forging, no blister, no air holes, no leakage. Made by special high precision CNC machines. Brass Bonnet: High-density forging, no blister, no air holes, no leakage. Made by special high precision CNC machines. Brass Flap: With hard sealing structure, is not easy to abrade after long-term use, with excellent sealing performance, and can be used in various environments. PPR check valve brass horizontal check valve check valve check valve PPR water pipe fittings accessories DN20 25 Can be customized.China Brass Spring Check Valve factory website:http://www.winsoems.com/brass-....valve/brass-spring-c
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