1. Bi-directional tightness.
2. Small in size and light in weight. Easy installation and maintenance. It can be mounted wherever needed.
3. Simple and compact construction, quick 90 degree on-off operation.
4. Minimized operating torque, energy saving.
5. Flow curve tending to straight line. Excellent regulation performance.
6. Long service life. Standing the test of tens of thousands opening/closing operations.
7. Bubbles-tight sealing with no leakage under the pressure test.
8. Wide selection of materials, applicable for various medium.
Nominal diameter | DN40-DN1200 | DN40-DN1200 | DN40-DN300 | |
Nominal pressure | 1.0 | 1.6 | 2.5 | |
Test pressure | Seal | 1.1 | 1.76 | 2.75 |
Shell | 1.5 | 2.4 | 3.75 | |
| Applicable temperature | -10℃~100℃ | |||
| Applicable medium | Water, sewage, air, steam, food, medicine, various, oils, acids, alkalis, salts,etc. | |||
Part name | Material |
| Body | Ductile iron, cast iron, cast steel, stainless steel |
| Plate | Ductile iron(surface treatment: nickel plating, spray N11, fully lined with EPDM, fully lined with PTFE), CF8, CF8M, copper alloy, Monel, duplex steel, etc |
| Stem | SS410、SS416、SS431、SS304、20Cr13 |
| Seat | EPDM, NBR, natural rubber, Viton, silicone, PTFE, etc. |
| O-Ring | EPDM, NBR |
| Bushing | PTFE, bronze |




Product Advantages
Robust Design Ensuring Secure, Modular Installation
The valve’s lug-type stainless steel body enables simple bolt-up between flanges, allowing independent removal or
maintenance without dismantling entire piping sections. Its compact wafer-style form combined with the enhanced
lug design offers structural flexibility for confined spaces and robust flange connections. Utilizing PTFE seats and
multiple material options assures corrosion resistance and chemical compatibility across industry requirements.
This modular design aligns with modern piping systems, delivering adaptable, secure installation benefits that merge
the convenience of wafer butterfly valves with the strength of lug-style flanges, supporting both new builds and retrofit
projects.
Exceptional User Experience and Operational Efficiency
Thanks to its minimized operating torque and precise PTFE sealing, the valve operates effortlessly for quick open-close
cycles, reducing operator fatigue and maintenance intervals. Its lightweight construction eases handling on-site during
installation or replacement. The bi-directional tightness eliminates leakage concerns in either flow direction, improving
process control accuracy and safety. Users experience durable, bubble-tight sealing over thousands of cycles that lowers
life-cycle costs. With flexible seat and O-ring materials, this product caters to diverse media with reliability, making it an
invaluable valve for those seeking hassle-free, high-performance flow control solutions.
Use Scenarios
Optimizing Flow Control in Chemical Processing Plants
In chemical manufacturing environments, where aggressive acids and alkalis commonly flow through pipelines, the Lug
Stainless Butterfly Valve plays a vital role in ensuring tight sealing and corrosion resistance. Its PTFE lining withstands
harsh chemical exposure, preventing leakage and material degradation. The valve’s lug design simplifies installation and
periodic maintenance amid complex piping networks, supporting production uptime. Operators rely on its low actuation
torque and precise bi-directional closure for safety-critical shutdowns and flow regulation. Integration with standard flange
connections streamlines system upgrades, making it a key component in stringent chemical processing workflows requiring
durability and safety compliance.
Enhancing Reliability in Municipal Water and Wastewater Systems
For municipal water treatment and sewage management, this valve supports efficient pipeline isolation and flow throttling tasks.
The stainless steel body ensures long service life in outdoor and variable environments, while PTFE seats provide resistance
against chemical additives commonly used for water treatment. Its lug-type flange connection offers secure bolted installation
crucial for frequent maintenance cycles and section isolations. The quick 90-degree operation speeds up manual control,
saving operator effort during routine and emergency interventions. This butterfly valve’s compatibility with multiple media,
including water, steam, and air, positions it as a versatile asset integrated seamlessly into municipal infrastructure to maximize
performance and reduce operational downtime.
FAQ
What materials are used in the Lug Stainless PTFE Butterfly Valve?
The Lug Stainless Butterfly Valve features bodies made from ductile iron, cast iron, cast steel, and stainless steel. Its seats and
O-rings come in EPDM, NBR, Viton, natural rubber, silicone, and PTFE. This wide material variety ensures compatibility with various
fluids and environments.
Can the valve be customized to fit specific piping systems?
Yes, the Lug Stainless PTFE Butterfly Valve offers multiple nominal diameters from DN40 to DN1200 and supports flange
connections like DIN, EN, JIS, and ASME standards. Customization options include different body materials and sealing seats
to match diverse piping requirements.
How easy is it to install and operate the butterfly valve?
This lug-type butterfly valve is designed for easy bolt-up installation. Its compact size and lightweight construction allow quick
positioning. The valve operates with a smooth 90-degree turn and requires minimal torque, making manual actuation
straightforward and efficient.
What is the expected delivery time when ordering this butterfly valve?
Typical delivery times for the butterfly valve manufacturer products range between 15 to 30 days. This timeframe accounts
for production and quality checks to ensure prompt and reliable supply to customers worldwide.
TJL INDUSTRY GROUP CO., LIMITED
Tel: 0086-22-28219562
Fax: 0086-22-28219554 ext.8888
Mobile:15022393555
Email: sales@tjlindustry.com
Address: 1-711,XiangNian Plaza, Dongjiang and Neijiang Road Cross, Hexi District, Tianjin China