DFP13 Underground Fire Hydrant Boiler
Devinsan offers specialized thermal management solutions engineered for guaranteed freeze prevention and reliable cold-weather functionality in critical fire safety infrastructure. Designed for robust durability and continuous operational readiness, these DFP13 Underground Fire Hydrant Boiler units utilize a controlled heat source to meet the extreme demands of modern municipal networks in deep-freeze climates.
Production Standard
Nominal Dimension (DN)
Nominal Pressure (PN)
Operating Temperature
Design
Coating
Testing
DN 80 – DN 100
PN 6-PN 10-PN 16
-30° / +200°
TS EN 14384
Electrostatic Powder Epoxy
TS EN 14384
Application Areas
The DFP13 Underground Fire Hydrant Boiler 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 DFP13 Underground Fire Hydrant Boiler ensures precise fluid control, maintains excellent sealing integrity, and supports efficient, safe operation even under demanding conditions.
The DFP13 Underground Fire Hydrant Boiler is an advanced auxiliary system specifically engineered to maintain the temperature of the fire hydrant connection point and the immediate surrounding soil above freezing levels. Designed to meet the stringent demands of modern infrastructure in severe cold regions, this specialized unit ensures reliable water delivery capability and prevents ice formation that could obstruct the main valve or operating spindle.
At the core of the DFP13 Underground Fire Hydrant Boiler is its insulated containment chamber and integrated heating element (or hot water circulation system). This mechanism gently transfers heat to the hydrant barrel and surrounding area, ensuring that any residual moisture drains correctly and preventing the main valve from becoming frozen or inaccessible. This active thermal management system is crucial for immediate access during winter emergencies.
Manufactured from high-strength, corrosion-resistant materials and built with a robust, insulated body, the DFP13 Underground Fire Hydrant Boiler is designed for continuous burial service adjacent to the main hydrant valve below the frost line. Its secure, self-contained design ensures energy efficiency while preventing external thermal interference. The inclusion of the boiler system provides an unmatched level of operational security in climates where passive drainage alone is insufficient.
The DFP13 Underground Fire Hydrant Boiler is ideally suited for deployment in high-altitude zones, areas prone to extended periods of sub-zero temperatures, and critical infrastructure locations where any risk of freeze-up is unacceptable. Its reliable heating function and comprehensive protection features make it a preferred choice for municipal engineers seeking a high-integrity, standards-compliant solution for essential winterized public safety infrastructure.
In summary, the DFP13 Underground Fire Hydrant Boiler offers an optimal combination of continuous thermal protection, reliable main valve access, and structural integrity against ice damage. With its controlled heating system, durable insulation, and focus on extreme cold-weather performance, this unit stands as a trusted solution for modern emergency water supply requirements worldwide.
1. General Information
The DFP13 Underground Fire Hydrant Boiler is designed for integration adjacent to the main hydrant body below ground level, requiring connection to a power source or heat loop. Proper installation is essential to guarantee safe operation, long service life, and active freeze protection.
2. Safety Precautions
Installation must be performed by qualified personnel only.
Ensure strict compliance with all local safety regulations and standards concerning electrical connections, thermal insulation, and excavation near 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 DFP13 Underground Fire Hydrant Boiler.
3. Pre-Installation Checklist
Inspect the DFP13 Underground Fire Hydrant Boiler for any visible damage during transport or storage, paying attention to the integrity of the insulation and the heating element/loop connections.
Check that the unit’s voltage/power requirements match the available supply.
Verify that the boiler interior and heating element are clean and free from debris.
Confirm that the hydrant connection flange is properly aligned and clean for integration.
Ensure the final placement provides adequate space for heat transfer and safe routing of utilities.
4. Installation Procedure
Positioning: Install the DFP13 Underground Fire Hydrant Boiler adjacent to the hydrant main body below the frost line, ensuring optimal thermal contact with the valve mechanism.
Connect the boiler unit to the required utilities (electrical supply or hot fluid loop) following manufacturer and local code specifications.
Use the appropriate gasket suitable for the medium and operating conditions.
Secure the boiler unit firmly in place, ensuring the insulation and any protective housing are correctly oriented.
Backfill the area carefully, ensuring proper bedding material is used for support.
5. Post-Installation
Slowly open the upstream isolation valve to pressurize the hydrant, checking for leaks.
Energize the DFP13 Underground Fire Hydrant Boiler and verify the heating element/system is functioning correctly and maintaining the required temperature.
Monitor the system during cold cycles to ensure continuous freeze protection is achieved.
Record the installation details, utility connections, and operational notes for documentation purposes.
Proper maintenance extends the service life of the DFP13 Underground Fire Hydrant Boiler and ensures continuous, active freeze protection. Follow the guidelines below to maximize the longevity of this essential thermal asset.
1. Routine Operation
Visually inspect the DFP13 Underground Fire Hydrant Boiler controls (if surface-mounted) regularly (e.g., monthly during winter) to ensure the heating element is active and the system is maintaining temperature.
Check the electrical connections and insulation integrity for any signs of wear or failure.
2. Inspection Schedule
Monthly, check the area surrounding the hydrant for signs of external leakage, which may indicate a failure in the main valve or the boiler’s connection to the system.
Quarterly, check the functionality of the main hydrant valve itself (open/close cycle) to ensure the heating hasn’t caused any binding.
Annually, perform a detailed inspection of the heating element/coils and the condition of the thermal insulation inside the burial chamber.
3. Lubrication
The DFP13 Underground Fire Hydrant Boiler components themselves (heating elements, insulation) do not require lubrication.
Only the main hydrant spindle should be lubricated (as per the hydrant’s maintenance guide).
4. Seal and Gasket Replacement
Replace any utility connection gaskets (electrical conduit, fluid loop) immediately if external leakage is observed.
The thermal insulation material should be replaced if damage or moisture ingress is found, as this compromises energy efficiency.
Always isolate the power supply and fully depressurize the system before attempting any maintenance work on the DFP13 Underground Fire Hydrant Boiler.
5. Cleaning
Keep the exterior of the DFP13 Underground Fire Hydrant Boiler access point (if applicable) clean.
The main body requires no external cleaning while buried, but debris should be cleared from the immediate vicinity of the main hydrant drain.
6. Storage and Spare Parts
Store spare parts (gaskets, heating elements, thermostat controls) in a dry, clean environment, away from direct sunlight and temperature extremes.
Maintain a detailed record of all inspections, temperature logs, and repairs performed on the DFP13 Underground Fire Hydrant Boiler 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 DFP13?
What are the main advantages of this valve?
The DFP13 Underground Fire Hydrant Boiler offers critical active protection against freezing, ensuring the hydrant main valve and drain mechanism remain fully operational in extreme cold, which passive drainage systems cannot always guarantee.
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 primary function of the heating system in the DFP13 Underground Fire Hydrant Boiler?
The primary function is to actively ensure the temperature around the main hydrant valve and the drainage zone remains above the frost line temperature, preventing the formation of ice that could disable the hydrant or damage the system seals.
Does the DFP13 Underground Fire Hydrant Boiler replace the hydrant's internal drainage system?
No. The DFP13 Underground Fire Hydrant Boiler works in conjunction with the passive drainage system. It prevents the residual moisture near the valve seat from freezing solid, allowing the drain to function correctly and ensuring reliable closure.
Is the DFP13 Underground Fire Hydrant Boiler cost-effective for year-round use?
The DFP13 Underground Fire Hydrant Boiler is highly cost-effective in cold regions as it prevents catastrophic damage and provides reliability during emergencies. It is typically designed to operate only when ambient temperatures drop below a critical set point.
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