Precision. Protection. Performance.
Ready to eliminate water hammer, extend the life of your pipelines, and protect your investment? The Av-Tek® 5700-DI is more than just an air release valve — it’s a safeguard for your entire clean water system. Built from ductile iron, coated with fusion-bonded epoxy, and engineered with anti-slam technology, it ensures consistent air management, smooth pipeline operation, and decades of reliable service.
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The Challenge: Air Management in Modern Water Systems
In municipal water distribution, industrial facilities, and irrigation networks, uncontrolled air pockets and vacuum conditions are silent threats. Air accumulates at high points, causing erratic flow, inaccurate metering, and costly pipeline stress. When draining or during sudden bursts, negative pressure can collapse sections of pipe. And then there’s the notorious water hammer — a pressure surge that can destroy valves, crack pipes, and halt operations.
Traditional combination air valves often close too quickly during filling, unintentionally creating the pressure spikes they were meant to prevent. That’s where the Av-Tek® 5700-DI changes the game — with a design that controls air movement instead of simply reacting to it.
Engineering That Delivers Results
Every detail of the 5700-DI is crafted for strength, safety, and efficiency:
Ductile iron body with fusion-bonded epoxy coating for superior corrosion resistance and long-term performance.
Single-chamber aerodynamic body reinforced with internal guiding ribs to ensure precise float movement.
Anti-slam system that automatically adjusts outflow capacity, slowing the incoming water column and minimizing water hammer risk.
Patented CSA/Av-Tek air release system in AISI 316 stainless steel for maximum durability.
Additional anti-surge obturator to handle transient events smoothly.
Stainless steel nozzle and gasket holder to prevent corrosion at the most critical points.
NSF/ANSI 61 & 372 certified, making it safe for potable water applications.
This isn’t just about meeting standards — it’s about exceeding them so your operations remain uninterrupted for decades.
How the 5700-DI Works
The Av-Tek® 5700-DI manages air in four key phases:
Pipeline Filling – Releases trapped air steadily, preventing premature closure and reducing pressure spikes.
Controlled Outflow – Adjusts flow when differential air pressure rises, slowing water entry and preventing water hammer.
Continuous Operation – Gradually compresses and releases small air accumulations to maintain stable system pressure.
Pipeline Draining or Bursts – Admits large volumes of air instantly to prevent vacuum damage and protect the pipeline.
By actively managing air instead of simply venting it, the 5700-DI ensures both system safety and operational efficiency.
Real-World Benefits for Operators
Choosing the 5700-DI delivers measurable results:
Fewer maintenance calls thanks to robust construction and intelligent design.
Extended equipment lifespan by minimizing damaging pressure transients.
Lower operating costs with reduced wear on pumps and other system components.
Simplified inventory by standardizing on a valve that’s NSF-certified and suitable for multiple applications.
In short: less downtime, lower costs, and more confidence in your system.
Where the 5700-DI Excels
The 5700-DI is versatile enough for:
Main transmission lines and slope changes where air pockets accumulate.
Municipal water distribution networks.
Agricultural irrigation systems.
Wastewater applications (extended body model).
Imagine a utility upgrading its water distribution system. With Av-Tek® 5700-DI valves installed at strategic high points, start-ups are smooth, pressure remains stable, and maintenance crews see fewer emergencies. Over the years, the ROI becomes undeniable.
Why Choose Av-Tek®?
Av-Tek® has built its reputation on engineering excellence, innovative design, and commitment to quality. The 5700-DI embodies these values — delivering a valve that works as hard as the systems it protects. From the materials we select to the precision of our patented designs, every Av-Tek® valve is created to outperform conventional solutions.
Take the Next Step — Protect Your System Today
Don’t wait for a costly pipeline failure to make a change. Equip your clean water system with the Av-Tek® 5700-DI and experience the confidence that comes from having the best anti-slam air release valve on the market.
📞 Call now: 385-325-2504
📧 sales@avtekvalves.com
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