DN80 stainless steel weir type diaphragm valves remain a preferred choice for engineers managing corrosive and hygienic flow systems. Their design lends itself well to installations where precision flow control, easy maintenance, and resistance to aggressive media are expected.
This valve configuration addresses two persistent challenges in the process industry: chemical compatibility and sealing reliability. Whether used in water treatment or aggressive fluid processing, these valves reduce the risk of contamination and downtime.
With a track record of delivering corrosion-resistant flow control products across Australia and Europe, our diaphragm valve range is engineered for longevity and dependable performance.
Key Technical Specifications for DN80 Installations
The DN80 weir-type diaphragm valve is manufactured in line with EN558-1 Series 1 dimensions and typically supplied in 316 stainless steel body construction for enhanced corrosion resistance. It is available with EPDM, PTFE, or rubber linings, depending on application needs.
These valves are designed to meet working pressure limits of PN10 to PN16, with temperature ranges generally between -10°C and +120°C, depending on lining. They also comply with international standards for chemical and industrial service, including ISO 9001 and PED 2014/68/EU certification, ensuring performance and regulatory conformity.
For additional compatibility with chemical media, many engineers opt for our weir-type rubber lined diaphragm valves when PTFE or EPDM is unsuitable.
Applications Across Process and Utility Systems
The DN80 stainless steel weir valve is commonly used in chemical processing, water treatment, pulp and paper, and mining sectors. Its corrosion-resistant body and interchangeable diaphragm options allow integration into systems handling acids, slurries, or sanitised fluids.
Due to its compact face-to-face dimensions and weir configuration, it can be fitted into skid systems, filtration units, or CIP lines where space is restricted. Its low maintenance requirements and ease of cleaning make it suitable for critical flow paths where cleanliness or chemical resistance is mandatory.
To explore compatible operator interfaces, see our range of manual and automated operator options designed specifically for weir-type valves.
Design and Construction Benefits
The weir-type design reduces diaphragm movement, minimising wear and extending service intervals. Stainless steel construction ensures high mechanical strength and reduced risk of pitting, even in aggressive environments.
Material choices such as PTFE-lined or rubber-backed diaphragms provide chemical compatibility while maintaining a strong seal, even under frequent cycling. The bonnet and actuator options allow compatibility with manual handwheels or pneumatic/automated systems—ideal for use with PLC-controlled lines.
These valves are built for reduced torque requirements, meaning less strain on actuators and easier operation during manual use. The valve body can often be serviced without removing the entire unit from the pipeline, helping reduce downtime in maintenance cycles.
If you’re seeking a smaller form factor for compact process lines, explore our KDV Minival diaphragm valves for precision in tight installations.
Engineer FAQs – DN80 Weir Diaphragm Range
Q1: What makes the DN80 stainless steel weir valve ideal for corrosive applications?
Its 316 SS body resists chemical attack, while optional PTFE linings protect the wetted surface from acidic or alkali fluids.
Q2: Can this valve be automated with smart control systems?
Yes, it supports pneumatic actuators and can be fitted with positioners or feedback switches for integration with PLCs.
Q3: How does it differ from older diaphragm valve models?
Modern sealing profiles, improved bolting, and modular actuator mounting make maintenance easier and reduce leakage risk.
Q4: Are spare parts and diaphragms readily available?
Yes, spare diaphragms and actuator kits are available globally, including from our WT spare diaphragm listings.
Q5: What customisation options exist for this valve?
Customers may select diaphragm materials, actuator types, and body finishes to match media, pressure, and automation preferences.
Conclusion
Our DN80 stainless steel weir diaphragm valves combine chemical resistance with a durable construction proven in industrial environments.
