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  • Ductile Iron Rubber Flap Check Valve | Silent & Economical Backflow Preventer
    Simple Rubber Flap Design: No springs, no hinges — just a flexible rubber flap.
    Silent Operation: Rubber flap eliminates metal-to-metal slamming noise.
    Corrosion Proof: All wetted parts are rubber or epoxy-coated ductile iron.
    Ideal for Dirty Media: Handles sewage, sludge, and water with solids.
    Low Cracking Pressure: Opens with minimal forward flow.
    Maintenance Free: No moving parts to lubricate or replace.
  • Ductile Iron Silent Check Valve (Spring-Loaded) | Zero Water Hammer for High-Rise Buildings
    Spring-Loaded Disc: Disc closes before reverse flow can develop — eliminates water hammer.
    Silent Operation: No slamming noise — perfect for residential and hospital buildings.
    Short Face-to-Face: Wafer or flanged design fits tight spaces.
    Quick Response: Stainless steel spring ensures millisecond closure.
    Low Pressure Drop: Streamlined body design.
    Vertical or Horizontal: Works in any orientation.
  • Ductile Iron Swing Check Valve | Flanged Type with Lever & Weight for Large Diameters
    Flanged Swing Design: Traditional robust construction for large diameter pipelines.
    Low Pressure Drop: Disc swings fully open — minimal flow restriction.
    Lever & Weight Option: External counterweight reduces slamming and allows adjustable closing speed.
    Renewable Seat Ring: Seat can be replaced without replacing the entire valve.
    Horizontal or Vertical (Upward Flow) Installation: Flexible mounting.
    Class 125/150 or PN16: Meets major international flange standards.
  • Ductile Iron Y-Strainer | Removable Stainless Steel Mesh for Pipeline Protection
    Y-Shape Body: Allows easy access to strainer element without removing the valve.
    Large Debris Capacity: Blow-down port available for continuous service.
    Perforated or Wire Mesh: Choose filtration degree (0.5mm – 5mm openings).
    Removable Screen: Stainless steel 304 or 316 screen is cleanable and reusable.
    Pressure Rated: PN16/PN25 or Class 150/300.
    Blow-Down Valve Option: Purge accumulated debris without stopping flow.
  • Ductile Iron Basket Strainer (Tee Strainer) | High Debris Capacity for Pump Suction
    Basket / Tee Type: Larger debris holding capacity than Y-strainers.
    Easy Cleaning: Removable basket lifts out from top cover.
    Low Pressure Drop: Large open area of basket reduces flow resistance.
    Perforated or Mesh Basket: Options for coarse or fine straining.
    Blow-Down Port Option: Drain debris without disassembly.
    Ideal for Pump Suction: Protects pumps from large debris (rags, sticks, stones).
  • Ductile Iron Control Valve (Globe Type) | Pressure Reducing & Flow Regulating
    Pilot-Operated Design: Precise control of pressure, flow, or level.
    Globe Pattern Body: Excellent throttling characteristics.
    Available Functions: Pressure Reducing (PRV), Sustaining (PSV), Flow Control (FCV), Altitude (ALV).
    Hydraulic or Electric Pilot: No external power needed for hydraulic pilots.
    Diaphragm Actuated: Smooth, stable regulation.
    Bolt-on Seat: Easy maintenance.
  • Ductile Iron Foot Valve | Strainer + Check Valve for Pump Suction Lines
    Strainer + Check Valve in One: Protects pump and prevents backflow.
    Keeps Pump Primed: Holds water column in suction pipe when pump stops.
    Large Free Area: Low pressure drop for easy pump suction lift.
    Hinged Disc or Poppet: Reliable sealing against reverse flow.
    Stainless Steel Strainer Screen: Prevents debris from entering pump.
    Flanged or Threaded: Available for vertical installation at pipe bottom.
  • Ductile Iron Knife Gate Valve | Slurry & Thick Media Shut-Off
    Sharp Gate Edge: Cuts through thick slurries, pastes, and fibrous media.
    Unidirectional or Bi-Directional: Options for different installation needs.
    Flanged or Wafer / Lug: Multiple body style options.
    Thick Rubber Seat: Replaces easily when worn.
    Ideal for Mining & Pulp: Handles high solids content (up to 80%).
    Manual or Pneumatic/Electric Actuation: Available with handwheel, lever, or cylinder.
  • Ductile Iron Single Orifice Air Release Valve | Compact for Small Pipelines & Pumping
    Single Orifice Design: Small continuous air release during pressurized operation.
    Compact Size: Smaller and lighter than double orifice type — fits tight spaces.
    Suitable for Pumped Lines: Releases air entrained by pumps.
    Prevents Air Binding: Eliminates air pockets that cause flow reduction.
    Threaded Connection: Easy to install on small branch lines.
    Automatic Float Operation: Maintenance free.
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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 Tel: +86-13722964667
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