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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
1.01.51.1≤425°CWater, steam, gas, oil, hot air, natural gas and other media
1.62.41.76
2.53.82.75
4.06.04.4
Part NameMaterial
Valve body, butterfly plateCast steel, cast stainless steel
StemStainless steel
Ring (Sealing Ring)Stainless steel + graphite sheet
PackingFlexible Graphite

Specification Parameters

Butt-weld-Butterfly Valve

Main Connection Dimensions

DN (mm)L1.0 MPa1.6 MPa2.5 MPa4.0 MPa
HH1HH1HH1HH1
100190280390280390280390280390
125200300420300420300420300420
150210320460320460320460320460
200230370550370550370550370550
250250420620420620420620420620
300270480750480750480750480750
350290530800530800530800530800
400310580870580870580870580870
450330620920620920620920620920
5003506701000670100067010006701000
6003907501190750119075011907501190
7004308901440890144089014408901440
8004709801550980155098015509801550
900510106016501060165010601650//
1000550117519201175192011751920//
12006501310217013102170////
14007101310244013102440////
16007901560265015602650////
20009501670286016702860////

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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