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Premium Industrial Valves for Global Industries

Dalian Heavy Valve Company Limited – trusted manufacturer of butterfly, gate, check, regulating, and high-temperature valves. DN50-DN6000, 0.001-6.4MPa, multiple materials.

Over 20 Years of Manufacturing Experience
DN50 to DN6000 Valves | 0.001–6.4MPa Pressure Rating
Materials: Cast Iron, Ductile Iron, Carbon & Stainless Steel
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Industrial Valve Manufacturing

About TopOne Valve

Dalian Heavy Valve Company Limited is a leading manufacturer of industrial valves with decades of experience in precision engineering and global supply.

Trusted Valve Manufacturing Since 1965

We have extensive experience in manufacturing all standard valves, including butterfly valves, gate valves, check valves, regulating valves, stop valves, air valves, high-temperature valves, flap valves, penstocks, industrial strainers, mud valves, bottom valves, and valve accessories.

Our products are designed for durability, reliability, and performance across industries such as water treatment, power generation, oil & gas, and chemical processing.

DN50–DN6000
Nominal Diameter
0.001–6.4MPa
Pressure Range
Cast Iron, Ductile Iron
Material Options
Carbon & Stainless Steel
Material Options
Factory Equipment Valve Assembly Quality Inspection Valve Testing

Our Top-Selling Products

Explore our range of high-performance industrial valves engineered for reliability and long service life.

Double Eccentric Butterfly Valve

Double Eccentric Butterfly Valve

  • DN50–DN6000
  • 0.001–6.4MPa
  • Materials: Cast Iron, Ductile Iron, Steel
  • Low torque, zero leakage design
Non-rising Stem Gate Valve

Non-rising Stem Gate Valve

  • DN50–DN1200
  • 1.0–6.4MPa
  • Compact design for tight spaces
  • Stainless steel or carbon steel body
Swing Wing Check Valve

Swing Wing Check Valve

  • DN50–DN1000
  • 1.0–4.0MPa
  • Prevents backflow with minimal pressure drop
  • Available in ductile iron and steel
Piston Type Flow Regulating Valve

Piston Type Flow Regulating Valve

  • DN100–DN800
  • 1.6–4.0MPa
  • Precise flow control
  • Used in water supply and HVAC systems
Double Hole Air Valve

Double Hole Air Valve

  • DN25–DN300
  • 1.0–2.5MPa
  • Automatic air release and intake
  • Prevents vacuum and water hammer
Double Sliding Guide Foot Valve

Double Sliding Guide Foot Valve

  • DN50–DN300
  • 1.0–2.5MPa
  • For pump suction lines
  • Prevents debris entry and backflow
Tilting Disc Non Slam Check Valve

Tilting Disc Non Slam Check Valve

  • DN100–DN600
  • 1.6–4.0MPa
  • Eliminates water hammer
  • Fast closing, low noise operation
High Temperature Water Cooling Butterfly Valve

High Temp Water Cooling Butterfly Valve

  • DN100–DN1200
  • Up to 450°C
  • Special alloy construction
  • Used in power plants and industrial furnaces
Complete Valve Fittings

Complete Valve Fittings

  • Flanges, actuators, gears, seals
  • Customizable accessories
  • Compatible with all major valve types
  • Corrosion-resistant materials
Penstock / Y Strainer

Penstock / Y Strainer

  • DN50–DN600
  • 1.0–4.0MPa
  • Removes debris from pipelines
  • Easy maintenance and cleaning

Why Choose TopOne Valve?

Quality Assurance

Rigorous testing and inspection ensure every valve meets international standards.

Global Experience

Trusted by clients in over 30 countries with reliable delivery and support.

Advanced Equipment

Equipped with CNC lathes, vertical borers, and 50T overhead cranes.

Custom Solutions

We offer OEM and ODM services tailored to your project requirements.

20+
Years Experience
30+
Countries Served
50T
Overhead Crane
8000mm
Vertical Lathe

Frequently Asked Questions

What materials do you offer for valves?

We manufacture valves using grey cast iron, ductile cast iron, carbon steel, and stainless steel, depending on application requirements.

What is the pressure and size range of your valves?

Our valves range from DN50 to DN6000 with pressure ratings from 0.001MPa to 6.4MPa.

Do you provide OEM/ODM services?

Yes, we offer custom manufacturing, branding, and packaging solutions based on client specifications.

What certifications do your products have?

Our manufacturing processes follow international quality standards. We can provide test reports and documentation upon request.

Contact TopOne Valve

Reach out to us for product inquiries, quotes, or technical support.

Contact Information

Phone: +86 411 39616209
Mobile/WhatsApp: +86 15998489327
Address: 2120, No.66-3 Binhe Road, Shahekou District, Dalian, China
WeChat: heavyvalve
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