Extension rod butterfly valve
The Extension Rod Butterfly Valve is a specially designed butterfly valve equipped with an extended stem or extension rod, allowing convenient operation in locations where the valve installation position is deep, underground, insulated, or difficult to access.
This valve provides reliable flow isolation and control while enabling remote operation from a safe and accessible location. It is widely used in underground pipelines, HVAC systems, water treatment facilities, fire protection systems, industrial pipelines, and applications requiring valve operation away from the main pipeline.
With a robust structure, flexible installation design, and excellent sealing performance, the extension rod butterfly valve offers easy maintenance, improved operational safety, and long-term reliable service.
Extension rod butterfly valve
We provide professional OEM manufacturing and customized solutions for extension rod butterfly valves according to different project requirements.
Available materials include:
Available operating systems:
Our extension rod butterfly valves are manufactured under strict quality management systems and comply with international valve industry standards, including:
Complete technical documents available:
Parameter Specifications
| Parameter | Specification |
|---|---|
| Product Name | Extension Rod Butterfly Valve |
| Valve Type | Butterfly Valve with Extended Stem |
| Application | Remote Operation, Underground Pipeline, Hard-to-Reach Installations |
| Nominal Size | DN50–DN3000 (2"–120") |
| Pressure Rating | PN6–PN40 / Class 150–300 |
| Design Standard | API 609 / EN 593 / MSS SP-67 |
| Body Material | Cast Iron / Ductile Iron / Carbon Steel / Stainless Steel |
| Disc Material | Ductile Iron / Stainless Steel / Aluminum Bronze / Customized Material |
| Shaft Material | Stainless Steel / Alloy Steel |
| Seat Material | EPDM / NBR / PTFE / Metal Seat |
| Connection Type | Wafer / Lug / Flanged Type |
| Extension Rod Material | Stainless Steel / Carbon Steel / Customized Material |
| Extension Length | Customized According to Installation Requirements |
| Operation Method | Manual / Pneumatic / Electric / Hydraulic |
| Media | Water, Air, Gas, Oil, Industrial Fluids |
| Temperature Range | -20°C to +180°C (Customized Available) |
| Leakage Standard | API 598 / EN 12266 |
| Face-to-Face Dimension | API 609 / EN 558 |
| Actuator Mounting | ISO 5211 |
| Surface Treatment | Epoxy Coating / Anti-Corrosion Coating |
| Installation Position | Underground / Vertical / Horizontal / Remote Location |
| Protection Grade | IP65 / IP67 / IP68 Optional |
| Certification | ISO 9001, CE, API Standards (Optional) |
| OEM Capability | Size, Rod Length, Material, Actuator, Coating Customization |
Industry Applications
Extension Rod Butterfly Valves are widely used in applications where direct valve access is difficult or remote operation is required.
Material customization plan
Customized 316L stainless steel valves forGerman chemical enterprises. Resistant tostrong corrosion, suitable for their acidicmedium transportation systems, with aservice life extended to over 8 years.
Structural optimization design
For the Saudi desert project, the valve stemsealing structure was changed to a doublebellows design to address the leakage issuein the high-temperature and dustyenvironment, and it was highly recognizedby the customers.
Interface standard adaptation
Customized API 600 standard valves for acertain company in the United States. Theflange size is fully compatible with ANSIB16.5, ensuring zero error during on-siteinstallation and reducing the constructionperiod by 30%.
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