DFP12 N Part (Duck Foot Bend)
Devinsan offers high-stability underground connection solutions engineered for secure anchoring and optimal structural support of vertical hydrant assemblies. Designed for robust pressure resistance and comprehensive corrosion protection, these DFP12 N Part (Duck Foot Bend) units utilize a heavy, flared base to meet the critical demands of modern municipal water and fire protection network installations.
Production Standard
Nominal Dimension (DN)
Nominal Pressure (PN)
Operating Temperature
Design
Connection
Coating
Testing
DN 80 – DN 150
PN 6-PN 10-PN 16
-30° / +200°
TS EN 14384
EN 1092-2 ISO7005-2 Flanged
Electrostatic Powder Epoxy
TS EN 14384
Application Areas
The DFP12 N Part (Duck Foot Bend) 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 type DFP12 N Part (Duck Foot Bend) ensures precise fluid control, maintains excellent sealing integrity, and supports efficient, safe operation even under demanding conditions.
The DFP12 N Part (Duck Foot Bend) is an essential, high-strength fitting specifically engineered to transition the horizontal underground water main to the vertical inlet of a fire hydrant or valve assembly. Designed to meet the stringent demands of modern infrastructure, this specialized component ensures reliable structural stability and long-term durability by managing the significant thrust forces generated during water flow and system pressurization.
At the core of the DFP12 N Part (Duck Foot Bend) is its flared, bell-shaped base structure. This wide profile is designed to transfer the internal hydraulic thrust forces directly into the surrounding soil or a concrete reaction block, preventing movement or separation at the hydrant connection point. This strong anchoring capability is crucial for maintaining the integrity and security of the entire fire water system under extreme pressure.
Manufactured from high-strength, corrosion-resistant materials (such as ductile iron) and built with a robust, flanged body, the DFP12 N Part (Duck Foot Bend) is designed for continuous burial service and resistance to aggressive soil environments. Its flanged connection allows for secure and precise alignment with the hydrant base. The primary function of this part is to ensure the stable, stationary connection necessary for safe and reliable hydrant operation.
The DFP12 N Part (Duck Foot Bend) is ideally suited for deployment at every fire hydrant connection point within municipal, industrial, and commercial zones where structural stability and thrust restraint are non-negotiable safety requirements. Its reliable anchoring mechanism and proven structural performance make it a preferred choice for municipal engineers seeking a high-integrity, standards-compliant solution for long-term network security.
In summary, the DFP12 N Part (Duck Foot Bend) offers an optimal combination of foundational stability, thrust management, and reliable underground connection. With its robust structure, wide anchoring base, and corrosion protection, this unit stands as a trusted solution for modern fire hydrant installation and structural safety requirements worldwide.
1. General Information
The DFP12 N Part (Duck Foot Bend) is designed for critical underground installation to provide structural support and thrust restraint for vertical fire hydrant connections. Proper installation is essential to guarantee safe operation, long service life, and efficient system anchoring
2. Safety Precautions
Installation must be performed by qualified personnel only.
Ensure strict compliance with all local safety regulations and standards concerning excavation, trench shoring, and connecting to pressurized water mains.
Wear appropriate personal protective equipment (PPE).
Confirm that the water main section is fully depressurized and isolated before attempting to install the DFP12 N Part (Duck Foot Bend.
3. Pre-Installation Checklist
Inspect the DFP12 N Part (Duck Foot Bend) for any visible damage during transport or storage, paying attention to the flange faces and coating integrity.
Check that the size and pressure rating match the water main and hydrant requirements.
Verify that the interior is clean and free from debris.
Confirm that the mating pipe flanges are properly aligned (horizontal pipe section) and free from burrs or sharp edges.
Ensure materials for the concrete thrust block (if required) are readily available.
4. Installation Procedure
Positioning: Connect the DFP12 N Part (Duck Foot Bend) securely to the horizontal water main connection using appropriate flanging procedures.
Align the vertical flange precisely to accept the base of the fire hydrant.
Use the appropriate gasket suitable for the medium and operating conditions.
Insert and tighten bolts gradually and crosswise in incremental steps.
Ensure that the flared base is firmly resting on a solid reaction surface (e.g., concrete thrust block or compacted soil) to resist thrust forces.
5. Post-Installation
Slowly open the upstream isolation valve to pressurize the system, checking immediately for leaks around the flanged connection.
If leakage is detected, depressurize the system immediately and re-tighten the bolts following the cross-pattern sequence.
Proceed with hydrant mounting and backfilling, ensuring the base remains firmly anchored against the thrust surface.
Record the installation details, pipe alignment notes, and final bolt torques for documentation purposes.
Proper maintenance extends the service life of the DFP12 N Part (Duck Foot Bend) and ensures reliable structural anchoring and force management. Follow the guidelines below to maximize the longevity of this essential underground component.
1. Routine Operation
Visually inspect the ground above the DFP12 N Part (Duck Foot Bend) area regularly (e.g., annually) for signs of soil disturbance, sinking, or heaving, which may indicate anchor failure or excessive movement.
Monitor adjacent hydrant operation to ensure no unusual strain is being placed on the vertical connection.
2. Inspection Schedule
Monthly, check the area surrounding the hydrant base for persistent water leakage, which may signal a compromised seal at the buried connection point.
Quarterly, check the condition of any exposed anchor bolts or external supports adjacent to the connection point.
Annually, perform a detailed inspection of the pipe support near the connection point to confirm that the horizontal main is not stressed.
3. Lubrication
The DFP12 N Part (Duck Foot Bend) is a passive structural component and does not require lubrication.
All fasteners should be protected with rust inhibitors or bituminous wrapping before burial.
4. Seal and Gasket Replacement
The flange gasket between the DFP12 N Part (Duck Foot Bend) and the hydrant base should be replaced if consistent leakage is detected during pressurization.
The structural integrity of the bend itself should be verified if excessive external force (e.g., excavation damage) is suspected.
Always isolate the main water line and fully bleed the pressure before attempting any maintenance work on the flange connection.
5. Cleaning
The external surface of the DFP12 N Part (Duck Foot Bend) requires no routine cleaning while buried.
Ensure that the internal flow path is free from debris introduced during the connection process before hydrant installation.
6. Storage and Spare Parts
Store spare parts (gaskets, bolts) in a dry, clean environment, away from direct sunlight and harsh chemicals.
Maintain a detailed record of all anchor installation, backfill procedures, and repairs performed on the DFP12 N Part (Duck Foot Bend) 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 DFP12?
What are the main advantages of this valve?
The DFP12 N Part (Duck Foot Bend) provides essential mechanical thrust restraint and reliable connection for vertical hydrants, ensuring the entire system remains secure and stable against the high hydraulic forces generated when the hydrant is activated.
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 is the critical function of the duck foot bend in fire protection systems?
Its critical function is to safely redirect the high-pressure horizontal thrust created by the 90-degree turn in the fluid flow path and transmit that force into the ground or a concrete thrust block, stabilizing the hydrant connection.
Is the DFP12 N Part (Duck Foot Bend) designed to be permanently buried?
Yes. The DFP12 N Part (Duck Foot Bend) is constructed from highly corrosion-resistant ductile iron and finished with specialized coatings, ensuring it is designed for long-term, direct burial service without routine inspection.
What is the difference between a simple elbow and the DFP12 N Part (Duck Foot Bend)?
A simple elbow only changes direction. The DFP12 N Part (Duck Foot Bend) is specifically designed with a wide, reinforced base to provide the necessary reaction surface for hydraulic thrust forces, functioning as a structural anchor.
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