Description
Overview of KNKE High-Pressure Check Valve
The KNKE High-Pressure Check Valve is designed to prevent backflow in high-pressure, high-temperature pipelines. It is suitable for fluid transportation in industries such as petrochemicals, chemicals, power generation, and pharmaceuticals. The valve is constructed from high-quality materials, including A105 and SS304, offering robust performance in extreme conditions. It is available in DN6 to DN600 sizes, with a pressure range from 1.6MPa to 72MPa and can withstand temperatures up to 725°C. The valve’s design incorporates features such as a forged steel body and a durable Stellite or iron-based alloy seating surface for long-lasting operation.
Key Features of KNKE High-Pressure Check Valve
- Wide Pressure & Temperature Range: Suitable for pressures ranging from 1.6MPa to 72MPa and temperatures up to 725°C.
- Durable Materials: Manufactured with forged steel (A105) and stainless steel (SS304), featuring corrosion-resistant sealing materials.
- Self-Cleaning Seals: Stellite or iron-based alloys for excellent wear, high-temperature, and corrosion resistance.
- Versatile Applications: Perfect for handling water, steam, oil, gas, and certain corrosive fluids in demanding industrial environments.
- Reliable Backflow Prevention: Designed to prevent reverse flow, pump reversal, and media leakage in critical pipelines.
Technical Parameters
- Nominal Diameter: DN6 to DN600
- Nominal Pressure: 1.6MPa to 72MPa
- Test Pressure:
- Strength Test: 1.5 times rated pressure, no leakage
- Sealing Test: Leak-proof under pressure
- Applicable Media: Water, Oil, Steam, Gas, Corrosive Liquids
- Operating Temperature: Up to 725°C
- Materials: A105, SS304, Stellite, Iron-based Alloys
- Connections: Flanged
Materials of Major Parts
| Part | Material |
| Body | A105, SS304, F22 Alloy Steel |
| Nameplate | SS304 |
| Disc | A276 420 Stainless Steel |
| Cover | A105, SS304, F22 Alloy Steel |
| Gasket | 316 Spiral Wound with Flexible Graphite |
| Bolts | A193 B7 (Carbon Steel), A193 B8 (Stainless Steel) |
Valve Cover Design Options
- Bolt-type Cover: The valve body and cover are connected using bolts and nuts, with a spiral wound gasket made of 316 stainless steel and flexible graphite.
- Welded Cover: A welded connection between the valve body and cover, ensuring a fully sealed structure.
- Pressure-tight Cover: Utilizes internal pressure to form a self-sealing ring, providing a reliable seal without external gaskets.
Design Structure and Features
- Compliance: Conforms to API602, MSS-SP-118, ANSI B16.34, and ANSI B16.5 standards.
- Full or Reduced Bore Options: Available in full-bore and reduced-bore designs.
- Flanged Self-tightening Valve Cover: Offers a reliable seal with easy maintenance.
- RTJ Valve Body-Cover Connection: Ring-Type Joint (RTJ) connections for leak-proof operation.
- Bolted Cover with Spiral Wound Gasket: Provides an effective seal for extreme pressure and temperature conditions.
Applications of KNKE High-Pressure Check Valve
- Industries: Petroleum, Chemical, Pharmaceutical, Power Generation, Petrochemicals
- Applications: Ideal for controlling backflow in high-pressure pipelines, oil and gas transport, steam systems, and high-temperature media pipelines.
Performance Characteristics
- Leak-Proof Design: Advanced sealing technology ensures no leakage, even under extreme pressure and temperature conditions.
- Wear & Corrosion Resistance: Stellite and iron-based alloys provide superior resistance to abrasion, high-temperature oxidation, and corrosion.
- Easy Maintenance: The design allows for simple disassembly and maintenance, reducing downtime.
- Versatility: Capable of handling a wide variety of media, including water, oil, steam, and even corrosive liquids, in demanding industrial settings.