Innovation in Gate Valves for Gravity Irrigation
We explore the design improvements and durability of our cast iron valves, key for traditional high-flow irrigation systems.
Manufacturing a gate valve in our foundry workshop.
In the agricultural sector, irrigation efficiency depends largely on the reliability of control valves. At DN Found, we have redesigned our line of cast iron gate valves to face the most demanding conditions of gravity irrigation canals.
Technical Challenges Overcome
The main problem with conventional valves is corrosion and clogging from sediments. Our new design incorporates:
- A reinforced obturator with a hydrodynamic profile that minimizes the accumulation of sand and stones.
- A double-ring sealing system, manufactured with a special abrasion-resistant alloy.
- An optimized wall thickness in the highest pressure zones, ensuring structural integrity without unnecessarily increasing weight.
Casting Process and Quality Control
Each valve is the result of a controlled sand casting process. We use gray cast iron grade G25, known for its excellent machinability and vibration resistance. After demolding, each piece undergoes rigorous control:
- Visual and penetrant liquid inspection to detect micro-cracks.
- Hydrostatic test at 1.5 times the nominal working pressure.
- Final machining of the seating surfaces to guarantee a hermetic seal.
"The durability of a valve is not measured only in years, but in opening and closing cycles under constant pressure. Our commitment is to exceed the farmer's expectations."
— Technical Team, DN Found
Field Application
These valves are designed for nominal diameters (DN) from 100 mm to 600 mm, making them ideal for the diversion and control of main flows. Their operation via handwheel or actuator allows precise water management, reducing losses and optimizing the water resource each season.