Product feature1.Main parts of the product made of stainless steel S316, processed and formed after vacuum treated to material.2.Sealing surface roughness Raâ¤(less than or equal to )0.1 ,abrasion resistance, rust resistance3.Spillover proof design with double sealing for core. Effective sealing for fluid to protect circuit without pollution at the instant of valve body separation4.Corner bend made of SUS420 with high compressive strength5.Working temperature -20°~+220°Performance feature(compare with other product in the market)1.Always keep great sealing performance not mater it's swing or rotating2.Plastice bearing installed in the inner center which include carbon fibre with self-lubricating3.The cage shell and steel ball are designed according to bearing rotating clearance with smooth rotation4.The material of steel bell is imported SUS440, HRC58-60,better performance of rust resistance and abrasion resistance