Double Door Check Valve Manufacturers

Our factory provides valve, roll grooving tools, press fittings. And our products are mainly exported to Japan, Korea, Germany, Switzerland, Poland and USA. We take high quality, reasonable price and perfect service.

Hot Products

  • PN16 Pressure Relief Valve

    PN16 Pressure Relief Valve

    As the professional manufacture, we would like to provide you high quality Hispeed® PN16 Pressure Relief Valve. We supply PN16 Pressure Relief Valve.The Pressure Relief Valves limit inlet pressure by relieving excess pressure and prevent pipe line pressure from rising to maximun.The Pressure Relief Valves are designed for installation in the water supply connection to sprinkler, deluge, foam systems, or standpipe fire protection systems.The Pressure Reducing Valves features a PN16 flange or a groove, easy installation and accessibility. We are expecting to become your long term partner in China.
  • Residential Sprinklers

    Residential Sprinklers

    We supply Residential Sprinklers.The HISPEED® Residential Sprinklers are designed for life safety by providing occupants additional time to exit a structure in the event of a fire. Structures that may utilize residential sprinkler systems include single and multi-family homes, apartments and condominiums, student housing, and some hotels. Residential sprinkler systems using HISPEED® Residential Sprinklers can have long-term financial benefits, including reducing insurance premiums, increasing home value for homeowners, and improving the reputation for home builders.We offers the industry’s most comprehensive range of residential sprinklers to suit any decor, budget, and water supply. We are expecting to become your long term partner in China.
  • Stainless Steel Y-type angle seat Valve

    Stainless Steel Y-type angle seat Valve

    We supply Stainless Steel Y-type angle seat Valve.The HISPEED® Stainless Steel Y-type angle seat Valves are designed and manufactured to provide maximum service life and dependability.The HISPEED® Stainless Steel Y-type angle seat Valve may be used in commercial and industrial applications,including Beer drink,Printing and dyeing,Air separation,Pharmaceutical,Filling,Chemical industry,Sterilization,Foam equipment Environmental protection etc.Choose HISPEED® Stainless Steel Y-type angle seat Valves for the most specified, versatile and economical valve option in commercial, mechanical and industrial applications.We are expecting to become your long term partner in China.
  • Quick Response Upright And Pendent Sprinklers

    Quick Response Upright And Pendent Sprinklers

    We supply Quick Response Upright And Pendent Sprinklers.The HISPEED® Quick Response Upright And Pendent Sprinklers are built with the designer and installer in mind, helping you protect lives and preserve property in even the most challenging situations. The HISPEED® Quick Response Upright And Pendent Sprinklers are ideal for protecting light and ordinary hazard applications such as office buildings, hotels, schools, and restaurants to control the spread of fire.The HISPEED® quick response sprinklers are available in a variety of finishes and temperatures, employing either a rugged fusible link or a frangible glass bulb operating element. We are expecting to become your long term partner in China.
  • Cast Steel Y-Strainer

    Cast Steel Y-Strainer

    As the professional manufacture, we would like to provide you Hispeed® Cast Steel Y-Strainer. We supply Cast Steel Y-Strainer.The Cast Steel Y-Strainer provides full flow with minimal pressure drop.The Cast Steel Y-Strainer features a flange, easy installation and accessibility. The HISPEED® flanged Cast Steel Y-Strainers may be used in commercial and industrial applications,including chemical,biochemistry,pulp&paper,chemical fiber,pharmaceutical,environmental protection etc.Choose HISPEED® Y-Strainers for the most specified, versatile and economical valve option in commercial, mechanical and industrial applications.We are expecting to become your long term partner in China.
  • 300PSI Wet System Valve

    300PSI Wet System Valve

    As the professional manufacture, we would like to provide you Hispeed® 300PSI Wet System Valve. We supply 300PSI Wet System Valve.The Wet System valve works as a check valve by preventing the reverse flow of water from the system piping to the water supply. The valve is trimmed with a water bypass line,which has an in-line swing check valve. The bypass line allows pressure surges to enter the system and to be trapped above the alarm check valve's clapper without the clapper lifting and causing false alarms.When significant flow of water occurs, such as from an open sprinkler, the valve's clapper lifts and allows water to enter the system. Simultaneously, water enters an intermediate chamber, which allows the water to activate an alarm either through a water motor alarm or through a water pressure alarm. These alarms continue to sound until the flow of water is stopped.We are expecting to become your long term partner in China.

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