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Butt-Weld Hard Seal Butterfly Valve

Electric Butt-Weld Butterfly Valve

Butt-Weld Hard Seal Butterfly Valve

Caliber:DN150~DN2000
Material: Carbon Steel, Stainless Steel, Alloy Steel
Connection forms: Butt welding
Inspection and test:API 598, GB/T 13927
Pressure temperature level: PN16~PN100
Drive mode:Worm gear , electric, pneumatic, hydraulic, Handle
Pressure: PN16~PN100

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

  • The butterfly valve features bi-directional pressure, a two-way metal seal, and a specialized structure that allows for adjustable sealing under varying pressure. It utilizes an eccentric S-shaped seat sealing surface, ensuring the sealing area is less prone to damage, thus enhancing the valve’s durability and lifespan.
  • The valve operates with minimal torque, completing a full 90-degree turn for quick opening and closing, making it light and efficient in operation.
  • The valve offers low flow resistance and excellent hydraulic performance, with flow characteristics that are nearly linear, providing energy-saving benefits. Additionally, its two-way seal allows water flow in either direction.
  • The valve guarantees a reliable seal with an impressive lifespan of over 25,000 cycles for opening and closing.
  • The valve plate is designed with a dual-plate truss structure and multiple runners, optimized according to fluid dynamics principles.

Specification Parameters

Model

D363H-10

D363H-10P

D363H-10R

D363H-16

D363H-16P

D363H-16R

D363H-25

D363H-25P

D363H-25R

D363H-40

D363H-40P

D363H-40R

Work pressure(MPa)

1.0~4.0

Proper temperature(℃)

≤425

≤200

Suitable media

  Water, oil or non-corrosive media

 Nitric acid medium

Acetic acid medium

Material

 Body, disc

WCB

CF8/304

CF3M/316L

 Valve stem

2Cr13

304

316L

Body sealing surface

  Surfacing507

Butterfly sealing surface

304+flexible graphite

304+PTFE

304+PTFE

Filler

Flexible graphite

PTFE

PTFE

Butt Welding Butterfly Valve Diagram

The main shape and connection size

Nominal diameterDN(mm)

L

1.0MPa

1.6MPa

H1

H

H1

H

100

190

280

390

280

390

125

200

300

420

300

420

150

210

320

460

320

460

200

230

370

550

370

550

250

250

420

620

420

620

300

270

500

750

500

750

350

290

530

800

530

800

400

310

570

870

570

870

450

330

600

920

600

920

500

350

680

1040

680

1040

600

390

750

1190

750

1190

700

430

810

1290

810

1290

800

470

905

1440

905

1440

900

510

960

1550

960

1550

1000

550

1010

1650

1010

1650

1200

630

1175

1920

1175

1920

1400

710

1310

2170

1310

2170

1600

790

1460

2440

1460

2440

1800

870

1560

2650

1560

2650

2000

950

1670

2860

1670

2860

Nominal diameterDN(mm)

L

2.5MPa

4.0MPa

H1

H

H1

H

100

190

280

390

280

390

125

200

300

420

300

420

150

210

320

460

320

460

200

230

370

550

370

550

250

250

420

620

420

620

300

270

500

750

500

750

350

290

530

800

530

800

400

310

570

870

570

870

450

330

600

920

600

920

500

350

680

1040

680

1040

600

390

750

1190

750

1190

700

430

810

1290

/

/

800

470

905

1440

/

/

900

510

960

1550

/

/

1000

550

1010

1650

/

/

1200

630

1175

1920

/

/

1400

710

/

/

/

/

1600

790

/

/

/

/

1800

870

/

/

/

/

2000

950

/

/

/

/


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

Related Products

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