Double flanged gate valve

  valve for non-rising stem seal gate valves of the elastic base seat wedge type single ram, using direct channel structure. Dark stem design, the valve has the remarkable installation space small feature;   ram as ductile iron skeleton + high-performance rubber, EPDM, advanced plastic injection molding technology and mature vulcanization process. The adhesive strength, tensile strength and resilience of the rubber are guaranteed, and the rubber after vulcanization has no defects such as bubble, crack and dew iron. Its binding strength meets the requirements of DVGW, and it will never fall off even if subjected to frequent extrusion stress. The bonding strength shall not be lower than 1.725mpa when measured according to GB/T 11211 standard. Make sure that the gate plates are interchangeable and the valve can be operated with low torque for sealing effect.   gate on both sides of the guide rail with wear-resisting non-toxic engineering plastic (nylon), and gate…