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  • Ductile Iron Double / Triple Offset Butterfly Valve | Metal Seated for High Temp & Abrasion
    Offset Design: Disc rotates off-center, reducing wear and extending life.
    Metal-to-Metal Sealing: Suitable for high temperature (up to 400°C) and abrasive media.
    Double Offset (DOV): Cam action eliminates rubbing during opening/closing.
    Triple Offset (TOV): Zero leakage with bi-directional, fire-safe sealing.
    Low Operating Torque: Ideal for automated actuation.
    Class 150 to 300: Available in higher pressure classes.
  • Ductile Iron Wafer Butterfly Valve | Gear / Lever Operated for HVAC & Water
    Wafer Design: Sandwich installation between two flanges — lightweight and compact.
    Multiple Disc Options: EPDM/NBR lined body with ductile iron or stainless steel disc.
    90° Quick Operation: Quarter-turn lever or gearbox for fast open/close.
    Bi-Directional Sealing: Seals perfectly in both flow directions.
    Low Pressure Drop: Streamlined disc profile minimizes flow resistance.
    Interchangeable: Fits between PN10/PN16/ANSI Class 150 flanges.
  • AWWA C515 Ductile Iron Resilient Seated Gate Valve | Zero Leakage for Waterworks
    AWWA C515 Compliant: Fully meets American Water Works Association standards for potable water systems.
    100% Bubble-Tight Shut-Off: Resilient rubber-coated gate ensures zero leakage (ISO 5208 Rate A).
    Durable Fusion-Bonded Epoxy Coating: NSF/ANSI 61 certified, prevents red water and corrosion.
    Non-Rising Stem (NRS) Design: Ideal for underground installation with limited vertical space.
    Full Port & Flat Bottom: No debris trap, ensures smooth flow and minimal pressure loss.
    100% Hydrostatic Tested: Each valve individually tested before shipment.
  • Carbon Steel Flanged Swing Check Valve | Low Pressure Drop Backflow Prevention
    Swing Disc Design: Disc swings fully open — minimal flow resistance.
    Renewable Seat Ring: Bolt-in seat can be replaced without replacing valve body.
    Class 150 to 1500: Available for high pressure and high temperature.
    Lever & Weight Option: Adjustable closing speed to reduce water hammer.
    Horizontal or Vertical (Upward Flow): Flexible installation orientation.
    Long Hinge Life: Stainless steel hinge pin with bronze bushings.
  • Carbon Steel Flanged Ball Valve | Full Port / Floating Type for Industrial Shut-Off
    Floating Ball Design: Ball seals against upstream seat for bubble-tight shut-off.
    Full Port or Reduced Port: Full port for minimal pressure drop; reduced for lower cost.
    Fire Safe Design (Optional): Secondary metal seat meets API 607.
    Anti-Static Device: Prevents static charge buildup in explosive environments.
    Blow-Out Proof Stem: Stem cannot be ejected under pressure.
    ISO 5211 Mounting Pad: Ready for electric or pneumatic actuators.
  • Carbon Steel Flanged Globe Valve | Precise Throttling & Reliable Shut-Off
    Globe Pattern Body: Excellent throttling characteristics — better than gate valves.
    Low Seat Leakage: Disc makes positive contact with seat — ideal for frequent operation.
    Bolted Bonnet: Easy access for disc and seat maintenance.
    Renewable Seat & Disc: Both can be replaced without replacing the valve.
    WCB / WC6 / WC9: Select carbon steel grade based on temperature.
    Class 150 to 2500: Available for the highest pressure systems.
  • Carbon Steel Flanged Gate Valve | OS&Y / Rising Stem for High Temperature Service
    OS&Y (Outside Screw & Yoke) Design: Stem threads are outside the pipeline — protected from corrosive media.
    Rising Stem: Visual indication of valve position (open when stem is extended).
    Solid Wedge or Flexible Wedge: Solid for general service; flexible for thermal cycling.
    Bolted Bonnet: Easy maintenance without special tools.
    Renewable Seat Rings: Seat rings can be replaced in the field.
    Class 150 to Class 1500: Available for high pressure applications.
  • Carbon Steel Steam Trap | Float / Thermodynamic / Thermostatic Types for Condensate Drainage
    Multiple Types Available: Float (continuous), Thermodynamic (disc), or Thermostatic (bellows) — we match your application.
    Automatic Condensate Discharge: Removes condensate without losing live steam.
    Energy Saving: Prevents steam loss — reduces fuel costs.
    Durable Carbon Steel Body: WCB / WCC grade for high temperature and pressure.
    Built-in Strainer (Select Models): Protects internal parts from debris.
    Easy Maintenance: Internals are replaceable without removing the trap from the line.
  • Stainless Steel Three-Piece Ball Valve | Easy Maintenance & Sanitary Design for Critical Service
    Three-Piece Body: Center body separates completely from end connections — easiest to maintain.
    End Connections Remain on Pipe: Remove center body without unthreading valve from pipeline.
    Full Port Standard: No flow restriction — bore matches pipe ID exactly.
    PTFE / PEEK / RTFE Seats: Choose seat material for high temperature or abrasive media.
    Sanitary Polish Option: Internal surfaces polished for food/pharma service.
    Lockable Handle & ISO 5211 Pad: Safety and automation ready.
HEBEI GAOVISTA IMP & EXP TRADING CO., LTD
We specialize in supplying a full range of pipeline products, including carbon steel and stainless steel flanges, industrial valves, ductile iron valves, various pipe fittings and pipeline accessories.

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