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Butt-Weld Hard Seal Butterfly Valve

Electric Butt-Weld Butterfly Valve

Butt-Weld Hard Seal Butterfly Valve

Caliber:DN100~DN2000
Material: Carbon Steel, Stainless Steel, Alloy Steel
Connection forms: Butt welding
Inspection and test:API 598, GB/T 13927
Pressure temperature level: ≤425°C
Drive mode:Worm gear , electric, pneumatic, hydraulic, Handle
Pressure: PN10~PN40

Product Overview

The Butt-Weld Hard Seal Butterfly Valve is designed to provide superior sealing performance in demanding industrial applications. With its advanced design, the valve is constructed with a hard-seal mechanism that ensures reliable operation under high-pressure and high-temperature conditions. Ideal for critical services in pipelines, this valve features a robust construction that guarantees long-term durability and minimal maintenance.

The valve’s unique butt-weld connection offers a seamless and leak-proof interface, making it perfect for applications where preventing leakage is critical. Its hard seal design ensures tight shutoff, providing excellent sealing performance and preventing backflow. The valve is engineered to withstand extreme conditions and is suitable for a wide range of industries, including oil and gas, chemical processing, and water treatment.

Product Features

Main Performance Specifications

Nominal Pressure PN (MPa) Strength Test (MPa) Seal Test (MPa) Suitable Temperature (°C) Applicable Medium
1.0 1.5 1.1 ≤425°C Water, steam, gas, oil, hot air, natural gas and other media
1.6 2.4 1.76
2.5 3.8 2.75
4.0 6.0 4.4
Part Name Material
Valve body, butterfly plate Cast steel, cast stainless steel
Stem Stainless steel
Ring (Sealing Ring) Stainless steel + graphite sheet
Packing Flexible Graphite

Specification Parameters

Butt-weld-Butterfly Valve

Main Connection Dimensions

DN (mm) L 1.0 MPa 1.6 MPa 2.5 MPa 4.0 MPa
H H1 H H1 H H1 H H1
100 190 280 390 280 390 280 390 280 390
125 200 300 420 300 420 300 420 300 420
150 210 320 460 320 460 320 460 320 460
200 230 370 550 370 550 370 550 370 550
250 250 420 620 420 620 420 620 420 620
300 270 480 750 480 750 480 750 480 750
350 290 530 800 530 800 530 800 530 800
400 310 580 870 580 870 580 870 580 870
450 330 620 920 620 920 620 920 620 920
500 350 670 1000 670 1000 670 1000 670 1000
600 390 750 1190 750 1190 750 1190 750 1190
700 430 890 1440 890 1440 890 1440 890 1440
800 470 980 1550 980 1550 980 1550 980 1550
900 510 1060 1650 1060 1650 1060 1650 / /
1000 550 1175 1920 1175 1920 1175 1920 / /
1200 650 1310 2170 1310 2170 / / / /
1400 710 1310 2440 1310 2440 / / / /
1600 790 1560 2650 1560 2650 / / / /
2000 950 1670 2860 1670 2860 / / / /

Specification Applications

Oil & Gas Industry

  • Pipeline Systems: The valve is extensively used in oil and gas pipelines for regulating the flow of fluids, ensuring tight shutoff in high-pressure environments.
  • Refining and Petrochemical Plants: It is used for controlling the flow of liquids and gases within refining processes, including high-temperature and corrosive conditions.

Chemical and Petrochemical Industry

  • Process Control: In chemical plants, the Butt-Weld Hard Seal Butterfly Valve is used to manage the flow of chemicals, acids, and gases, ensuring precise control and maintaining safety in high-pressure systems.
  • Corrosive Fluid Handling: Its durable sealing surface makes it highly resistant to wear and corrosion, making it ideal for handling abrasive or aggressive chemicals.

Water and Wastewater Treatment

  • Flow Isolation and Regulation: Used in water treatment plants, these valves control the flow of water and wastewater, offering reliable operation for both clean and dirty water systems.
  • Effluent Systems: These valves ensure secure and tight sealing when dealing with treated water or effluent, preventing leaks in critical treatment processes.

Power Generation

  • Steam and Cooling Systems: The valve is used in power plants to regulate the flow of steam, gases, and cooling water in heat exchangers, boilers, and turbine systems.
  • Cooling Systems: In cooling towers and condenser lines, it controls the flow of cooling water, ensuring efficient energy management.

HVAC Systems

  • District Heating and Cooling: The valve plays a key role in managing water and coolant flow in district heating and cooling systems, ensuring effective temperature control.
  • Ventilation and Ducting Systems: In large ventilation systems, it is used to control airflows, providing precise regulation of pressure and temperature.

Marine and Shipbuilding

  • Ballast and Fuel Systems: On ships, it is used to regulate the flow of ballast water and fuel systems, offering a strong and reliable seal to prevent leaks.
  • Cargo Handling: Used in cargo pipelines and tanks for controlling the flow of liquids in marine applications, ensuring a tight seal during load and unload operations.

Valve Actuation

Process Optimization

Precision Engineering

Pipeline Solutions

Industrial Valves

Flow Control

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