Tiếng Việt
ភាសាខ្មែរDN200 Gear-Operated Butterfly Valve – Reliable Choice for Industrial Piping Systems
The DN200 gear-operated butterfly valve is a top-performing solution for large-diameter piping systems, widely applied in water supply and drainage, fire protection (PCCC), HVAC, and wastewater treatment. Its robust construction and smooth gear-operated mechanism (reduction gearbox) ensure efficient flow control while delivering long-term durability and leak-tight performance.
In this article, Bao Tin Steel provides a comprehensive guide to the DN200 gear-operated butterfly valve, covering design, technical specifications, key benefits, practical applications, and the latest price list—helping you select the right valve for your system and budget.
Design Overview & Appearance
The valve body typically features deep blue epoxy coating for cast iron or bright silver finish for stainless steel, offering excellent corrosion and oxidation resistance, especially in humid environments such as pumping stations, fire protection systems, or water treatment plants. The handwheel and gearbox are painted black for clear visibility and system identification.
Installation options include:
- Wafer type – compact, sandwiched between two flanges, ideal for residential and industrial systems.
- Flanged type – with integral flanges, suitable for locations requiring frequent disassembly and maintenance.
The disc (butterfly plate) is made of stainless steel or nickel-plated cast iron, providing strength and corrosion resistance. It is directly attached to a stainless steel stem, ensuring efficient torque transfer during opening and closing.
At the top, the handwheel with reduction gearbox allows easy operation even under high pressure, with a clear “OPEN/CLOSE” indicator for monitoring valve status.
Basic Technical Specifications
| Specification | DN200 Gear-Operated Butterfly Valve |
|---|---|
| Nominal Diameter (DN) | DN200 (~8 inch, OD ~219 mm) |
| Connection Type | Wafer or Flanged |
| Working Pressure | PN10 / PN16 (10–16 bar), Class 150 (ANSI) |
| Body Material | Ductile iron (GGG40), cast iron (FC), stainless steel (SUS304/SUS316) |
| Disc Material | Nickel-plated cast iron, stainless steel 304/316, aluminium bronze |
| Stem Material | Stainless steel 410/420 or 304/316 |
| Seat (Sealing) | EPDM, NBR, PTFE |
| Operating Temperature | -10°C to +120°C |
| Operation Type | Gearbox handwheel with OPEN/CLOSE indicator |
| Flange Standards | BS, JIS, DIN, ANSI |
| Common Origins | Korea, Malaysia, China, Taiwan, Vietnam |
Key Advantages
- Smooth Operation: Gearbox-assisted handwheel allows effortless opening/closing, even under high pressure.
- Cost-Effective: More affordable than electric or pneumatic actuated valves, while meeting all technical requirements.
- Compact Design: Wafer and flanged options save installation space.
- Easy Maintenance: Internal components are compatible and easy to replace.
- Flexible Material Selection: Body, disc, and seat materials can be customised per project requirements.
- Versatile Flow Control: Allows precise regulation of flow for better system management.
Applications in Piping Systems
Applications in Piping Systems
The DN200 gear-operated butterfly valve is suitable for diverse industries, including:
- Water supply and wastewater treatment systems
- Fire protection systems (UL/FM, PCCC)
- HVAC systems (heating, ventilation, and air conditioning)
- Oil, gas, and industrial chemical pipelines
- Power plants, hydropower plants, ash handling, cooling water circuits
- Marine applications: cargo ships, seawater pipelines, engine cooling systems
Installation of DN200 Butterfly Valve for Water Supply Pipelines
The valve can be installed in both horizontal and vertical pipelines. Always ensure proper alignment, torque, and support for large-diameter systems. The gearbox handwheel simplifies operation in high-pressure pipelines, making it ideal for water supply networks.
Latest Price List – DN200 Gear-Operated Butterfly Valve
| Valve Type | Origin | Body / Disc / Seat Material | Reference Price (VND) |
|---|---|---|---|
| Gear-operated, wafer-type | China | Ductile iron GGG40 / Nickel-plated iron disc / EPDM | ~1,750,000 – 2,300,000 |
| Wafer type – stainless steel disc | Taiwan | Cast iron / Stainless steel 304 disc / EPDM | ~2,600,000 – 3,000,000 |
| Flanged type | Korea | Cast iron / Cast iron disc / EPDM | ~3,800,000 – 4,500,000 |
| Full stainless steel valve | Vietnam / Imported | Stainless steel 304 / Stainless steel 304 / PTFE | ~6,500,000 – 8,000,000 |
| Fire protection valve (UL/FM) | Malaysia / Korea | Ductile iron / Cast iron disc / EPDM | ~5,200,000 – 6,800,000 |
For bulk orders or project-based purchases, Bao Tin Steel offers special discounts and nationwide delivery.
Bao Tin Steel – Your Trusted Supplier for Industrial Valves
Whether you need a single valve, bulk orders for projects, or professional advice on materials, standards, or installation, Bao Tin Steel is ready to support you promptly and reliably.
We provide high-quality valves at competitive prices, complete with CO-CQ certification, and attractive discounts for contractors and project engineers.
Technical & Price Consultation Hotline: 0932 059 176
Email for Quotations: kinhdoanh@thepbaotin.com
Call Bao Tin Steel today – choose the right valve, at the right price, at the right time!