DAV12 Non Slam Dynamic Air Release Valve
Devinsan offers sophisticated air expulsion solutions engineered for high-velocity air release and guaranteed non-slam closure during the critical pipeline charging phase. Designed for superior surge protection and extended system life, these DAV12 Non Slam Dynamic Air Release Valve units utilize advanced aerodynamic design to meet the crucial demands of modern high-speed water conveyance and pumping networks.
Production Standard
Nominal Dimension (DN)
Nominal Pressure (PN)
Operating Temperature
Design
Connection
Coating
Testing
DN 40 – DN 300
PN 6-PN 10-PN 16-PN 25-PN 40
-30° / +200°
EN 1074 – 4
EN 1092-2 ISO7005-2 Flanged
Electrostatic Powder Epoxy
EN 12266
Application Areas
The DAV12 Non Slam Dynamic Air Release Valve is widely used across diverse industrial and commercial sectors, delivering reliable flow control and long‑lasting performance.
1. Water and Wastewater Systems
2. Chemical Industry
3. Food and Beverage Industry
4. Pharmaceutical Industry
5. Oil and Gas Industry
6. HVAC (Heating, Ventilation, Air Conditioning) Systems
In these applications, this DAV12 Non Slam Dynamic Air Release Valve ensures precise fluid control, maintains excellent sealing integrity, and supports efficient, safe operation even under demanding conditions.
The DAV12 Non Slam Dynamic Air Release Valve is an advanced, high-flow air management component specifically engineered to handle massive volumes of air during pipeline filling and discharge. Designed to meet the stringent demands of modern infrastructure, this specialized valve ensures peak operational reliability and long-term durability by preventing destructive pressure transients caused by high-speed air expulsion and valve closure shock.
At the core of the DAV12 Non Slam Dynamic Air Release Valve is its unique non-slam mechanism and large internal orifice. During pipe filling, the air exits rapidly through the large orifice. As the water level rises, the dynamic design slows the closing speed of the float just before seating, preventing the sudden, slamming action typical of standard air valves. This controlled closure mitigates the shock wave that can lead to joint failure or pipe damage.
Manufactured from high-strength, corrosion-resistant materials and built with a robust body, the DAV12 Non Slam Dynamic Air Release Valve is designed to withstand continuous system pressure and dynamic forces within large water mains. Its flanged connection allows for secure installation at high points and along long horizontal runs. The dynamic non-slam closing feature significantly maintains the hydraulic integrity and reduces maintenance costs associated with surge damage.
The DAV12 Non Slam Dynamic Air Release Valve is ideally suited for applications in major water transmission pipelines, pumped wastewater discharge mains, and any system where the velocity of air expulsion during filling or the risk of water column separation is high. Its reliable dynamic action and comprehensive protection features make it a preferred choice for engineers seeking a high-integrity, standards-compliant solution for long-term pipeline safety and enhanced efficiency.
In summary, the DAV12 Non Slam Dynamic Air Release Valve offers an optimal combination of high-volume air release capacity, non-slam closure, and reliable dynamic protection. With its advanced aerodynamic mechanism, durable construction, and focus on controlled expulsion, this unit stands as a trusted solution for modern fluid control and large pipeline integrity requirements worldwide.
1. General Information
The DAV12 Non Slam Dynamic Air Release Valve is designed for the high-volume evacuation of air during filling and the subsequent continuous removal of residual air from pressurized systems. Proper installation is essential to guarantee safe operation, long service life, and sustained hydraulic efficiency.
2. Safety Precautions
Installation must be performed by qualified personnel only.
Ensure strict compliance with all local safety regulations and standards concerning working with high-pressure pipelines and large-volume air evacuation.
Wear appropriate personal protective equipment (PPE).
Confirm that the pipeline section is fully depressurized and isolated before attempting to install the DAV12 Non Slam Dynamic Air Release Valve.
3. Pre-Installation Checklist
Inspect the DAV12 Non Slam Dynamic Air Release Valve for any visible damage during transport or storage, paying attention to the float mechanism and large orifice seal.
Check that the valve type, size, and pressure rating match the system requirements.
Verify that the valve interior is clean and free from debris that could interfere with float movement or sealing.
Confirm that the mating pipe connection (e.g., flange) is clean and properly aligned. Ensure sufficient space is available above the valve for vertical installation and future maintenance access.
4. Installation Procedure
Positioning: Install the DAV12 Non Slam Dynamic Air Release Valve vertically, generally at the highest points of the pipeline profile where air naturally collects. The valve must be installed with the inlet facing upward to ensure the float and air pocket interaction operates correctly.
Use the appropriate sealing materials (e.g., gaskets) suitable for the medium and operating conditions.
Align the valve precisely with the pipe connection and secure it firmly using bolts and nuts. Avoid overtightening connections, which could damage the flange or valve body.
5. Post-Installation
Slowly introduce fluid and pressurize the system, carefully observing the rapid initial air release from the large orifice during the initial filling stage. Monitor the valve to ensure the dynamic mechanism closes smoothly without slamming once the liquid fills the chamber. Record the installation details, date, and initial air release performance for documentation purposes.
Proper maintenance extends the service life of the DAV12 Non Slam Dynamic Air Release Valve and ensures reliable air discharge, surge protection, and dynamic closure performance. Follow the guidelines below to maximize the longevity of this essential unit.
1. Routine Operation
Visually inspect the DAV12 Non Slam Dynamic Air Release Valve exterior regularly (e.g., monthly) for signs of external leakage from either orifice or connection points. Listen for any continuous hissing sound, which may indicate a failed seal on the small orifice, requiring immediate attention.
2. Inspection Schedule
Monthly, check the area surrounding the valve for any signs of fluid spray or leakage.
Quarterly, check the cleanliness of the valve inlet passage to ensure no fouling is restricting air or water flow into the chamber.
Annually, perform an internal inspection by removing the cover to check the condition of the large and small float assemblies, their lever mechanisms, and the orifice seals.
3. Lubrication
The internal components and float mechanism of the DAV12 Non Slam Dynamic Air Release Valve operate freely within the fluid and are generally designed to be maintenance-free. No external lubrication is required for the internal components.
4. Seal and Gasket Replacement
Replace the cover gasket and orifice seals immediately if persistent external or internal leakage is observed. The float mechanisms should only be replaced if the valve fails to seal completely (leakage) or fails to open (air binding occurs). Always isolate the valve and depressurize the section of the pipeline thoroughly before attempting any maintenance work requiring cover removal.
5. Cleaning
Keep the exterior of the DAV12 Non Slam Dynamic Air Release Valve clean to prevent surface corrosion. Ensure that the internal air passages remain clear to allow for both high-volume and continuous air release paths.
6. Storage and Spare Parts
Store spare parts (gaskets, orifice pins, floats) in a dry, clean, and cool environment, away from direct sunlight and temperature extremes. Maintain a detailed record of all inspections, internal part replacements, and repairs performed on the DAV12 Non Slam Dynamic Air Release Valve unit.
We prioritize quality at every stage of production to deliver durable, safe, and efficient products. Our continuous improvement and strict quality controls keep us at the forefront of the industry.
Our certifications prove our commitment to excellence and compliance with international standards, ensuring the safety and reliability of our products worldwide.
We continuously invest in innovation and quality to expand our certifications and meet evolving industry needs.
Frequently Asked Questions about the DAV12?
What are the main advantages of this valve?
The DAV12 Non Slam Dynamic Air Release Valve offers superior protection by managing both large volume air expulsion during filling and eliminating the destructive water hammer caused by uncontrolled high-speed valve closure common in standard air valves.
Why should I choose this product?
This valve delivers outstanding performance in both sealing and durability, making it a dependable choice for demanding applications. Its straightforward design facilitates easy installation, offering flexibility during system design. With a wide range of material options, it meets the needs of various infrastructure projects, from municipal water networks to industrial facilities.
What does "Non Slam Dynamic" refer to in this valve's design?
“Non Slam Dynamic” refers to the aerodynamic closing feature that throttles the air flow just before water reaches the valve, ensuring the large float closes gently against the seat, thereby preventing the severe shock and pressure spikes typical of high-velocity air expulsion.
Can this DAV12 Non Slam Dynamic Air Release Valve provide vacuum protection?
Yes. The DAV12 Non Slam Dynamic Air Release Valve is multi-functional and automatically allows large volumes of air back into the pipeline when internal pressure drops below atmospheric, providing crucial protection against pipeline collapse (vacuum).
Where should the DAV12 Non Slam Dynamic Air Release Valve be installed?
It should be installed at all major high points, along long horizontal runs (at intervals), and specifically at locations downstream of centrifugal pumps to ensure maximum air and surge control during system filling and operation.
Contact Devinsan
Reach out to our team for inquiries, quotes, and technical assistance