Jianqiao Valve Industry Group Co., Ltd. Jianqiao Valve Industry Group Co., Ltd.
Discharge check valve

Discharge check valve

Discharge check valve
Discharge check valve

Discharge check valve
Discharge check valve

Discharge check valve

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The Discharge Check Valve is engineered to automatically prevent backflow in pump discharge and process piping systems. Featuring durable construction, reliable sealing, low-pressure loss, and fast response characteristics, it protects pumps and equipment from reverse flow damage while ensuring continuous and efficient fluid transportation.

Discharge check valve

The Discharge Check Valve is a vital flow-control device designed to allow fluid movement in one direction while preventing reverse flow in discharge systems. Commonly installed downstream of pumps, compressors, and process equipment, it safeguards machinery from hydraulic shock, backpressure, and operational failures.

Manufactured with precision engineering and premium materials, our discharge check valves provide dependable performance in water treatment, power generation, chemical processing, oil & gas, mining, and industrial fluid handling systems.

Features

  • Automatic non-return operation
  • Excellent sealing performance
  • Low pressure drop design
  • Fast closing action
  • Reduced water hammer effect
  • Corrosion and wear resistance
  • Long service life
  • Easy installation and maintenance
  • Suitable for liquid and gas applications

OEM Capabilities & Customization

As a professional industrial valve manufacturer, we offer comprehensive OEM and ODM solutions tailored to customer requirements.

Customization Options

  • Valve sizes from DN15 to DN1200
  • Body materials:
    • Stainless Steel
    • Carbon Steel
    • Ductile Iron
    • Cast Iron
    • Duplex Stainless Steel
  • Seal materials:
    • NBR
    • EPDM
    • Viton
    • PTFE
  • Connection types:
    • Flanged
    • Threaded
    • Wafer
    • Lug
    • Welded
  • Customized pressure ratings
  • Anti-corrosion coatings
  • Special high-temperature designs
  • Customer logo engraving
  • OEM packaging solutions

OEM Manufacturing Services

  • CAD drawing support
  • 3D design development
  • Prototype production
  • Small and large batch manufacturing
  • Third-party inspection support
  • Export-standard packaging
  • Global logistics assistance

Valve Industry Certifications

Our manufacturing processes and products comply with major international standards and certifications:

  • ISO 9001 Quality Management System
  • CE Certification
  • API Standards
  • ANSI Standards
  • ASME Standards
  • DIN Standards
  • BS Standards
  • JIS Standards
  • PED Certification
  • SGS Inspection Reports
  • RoHS Compliance
  • Material Traceability Certification

Discharge check valve

 

Parameter Specification
Product Name Discharge Check Valve
Valve Type Non-Return / Check Valve
Size Range DN15 – DN1200
Pressure Rating PN10 – PN100 / Class 150–600
Body Material Cast Iron, Ductile Iron, Carbon Steel, Stainless Steel
Disc Material Stainless Steel, Ductile Iron
Seat Material NBR, EPDM, PTFE, Metal Seat
Connection Type Flanged, Threaded, Wafer, Lug, Welded
Operating Temperature -29°C to +450°C
Leakage Class ANSI/FCI 70-2 Class VI
Flow Direction One Direction Only
Applicable Medium Water, Oil, Gas, Steam, Chemicals
Surface Treatment Epoxy Coating, Painting, Polishing
Design Standard API, ANSI, DIN, BS, JIS
Installation Position Horizontal or Vertical

Discharge check valve

The Discharge Check Valve is widely used in:

Water Treatment Plants

  • Pump discharge systems
  • Water distribution pipelines
  • Sewage treatment facilities

Power Generation

  • Cooling water systems
  • Boiler feedwater systems
  • Auxiliary pipelines

Oil & Gas Industry

  • Pipeline transportation
  • Refinery processing units
  • Pump protection systems

Chemical Processing

  • Corrosive fluid transfer
  • Process control systems

Mining Industry

  • Slurry transportation systems
  • Dewatering equipment

HVAC Systems

  • Chilled water circulation
  • Heating networks

Marine Applications

  • Ballast systems
  • Engine room piping

Industrial Manufacturing

  • Process pipelines
  • Compressor discharge systems
  • Utility fluid distribution

Material customization plan

Customized 316L stainless steel valves forGerman chemical enterprises. Resistant tostrong corrosion, suitable for their acidicmedium transportation systems, with aservice life extended to over 8 years.

Structural optimization design

For the Saudi desert project, the valve stemsealing structure was changed to a doublebellows design to address the leakage issuein the high-temperature and dustyenvironment, and it was highly recognizedby the customers.

Interface standard adaptation

Customized API 600 standard valves for acertain company in the United States. Theflange size is fully compatible with ANSIB16.5, ensuring zero error during on-siteinstallation and reducing the constructionperiod by 30%.

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