DFP10 Ground Fire Hydrant
Devinsan offers vital municipal safety equipment engineered for reliable, high-volume water supply and immediate access for emergency fire control. Designed for long-term structural integrity and optimal operational readiness, these DFP10 Ground Fire Hydrant units combine robust, break-away construction with comprehensive freeze protection to meet the critical demands of urban safety networks.
Production Standard
Nominal Dimension (DN)
Nominal Pressure (PN)
Operating Temperature
Design
Height
Connection
Coating
Testing
DN 80 – DN 150
PN 6-PN 10-PN 16
-30° / +200°
TS EN 14384
125 cm – 145 cm – 175 cm – 215 cm
EN 1092-2 ISO7005-2 Flanged
Electrostatic Powder Epoxy
TS EN 14384
Application Areas
The DFP10 Ground Fire Hydrant 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 DFP10 Ground Fire Hydrant ensures precise fluid control, maintains excellent sealing integrity, and supports efficient, safe operation even under demanding conditions.
The DFP10 Ground Fire Hydrant is a critical safety component specifically engineered to provide firefighters with a controlled, high-volume connection point to the underground water main during emergency response. Designed to meet the stringent demands of modern infrastructure, this specialized unit ensures reliable water delivery capability, operational readiness, and long-term durability in municipal distribution systems.
At the core of the DFP10 Ground Fire Hydrant is its robust main valve mechanism, which, when opened via the operating stem, allows pressurized water to flow rapidly from the underground main up to the accessible outlets. A crucial feature is the automatic drain valve which opens upon final closing, ensuring all standing water drains from the upper barrel. This drain mechanism provides vital protection against freezing and potential damage in cold climates.
Manufactured from high-strength, corrosion-resistant materials (such as ductile iron) and built with a sectional, flanged body, the DFP10 Ground Fire Hydrant is designed to withstand continuous system pressure and harsh external elements. In the event of a traffic collision, the break-away design ensures the top section shears cleanly, preventing massive uncontrolled flooding and simplifying repair by protecting the main valve below ground.
The DFP10 Ground Fire Hydrant is ideally suited for deployment along city streets, commercial zones, industrial parks, and any high-density area where immediate and secure access to the water main is required for firefighting purposes. Its proven safety features and high-flow capability make it a preferred choice for municipal engineers seeking a high-integrity, standards-compliant solution for long-term public safety infrastructure.
In summary, the DFP10 Ground Fire Hydrant offers an optimal combination of public safety, high-volume flow capacity, and structural protection against freezing and external damage. With its dependable main valve sealing, break-away feature, and essential drainage system, this unit stands as a trusted solution for modern emergency water supply requirements worldwide.
1. General Information
The DFP10 Ground Fire Hydrant is designed for direct flanged connection to the underground water main, requiring precise alignment and vertical stability. Proper installation is essential to guarantee safe operation, long service life, and efficient emergency water availability.
2. Safety Precautions
Installation must be performed by qualified personnel only.
Ensure strict compliance with all local safety regulations and standards concerning excavation, heavy lifting, and connecting to pressurized municipal water lines.
Wear appropriate personal protective equipment (PPE).
Confirm that the water main section is fully depressurized and isolated before attempting to install the DFP10 Ground Fire Hydrant.
3. Pre-Installation Checklist
Inspect the DFP10 Ground Fire Hydrant for any visible damage during transport or storage, paying attention to the flange face and outlet threads.
Check that the hydrant type, size, and pressure rating match the municipal system requirements.
Verify that the hydrant interior and main valve seat are clean and free from debris.
Confirm that the mating underground pipe flange is properly aligned (vertical) and free from burrs or sharp edges.
Ensure the final grade level is marked and sufficient space is available for the break-away flange and external supports.
4. Installation Procedure
Positioning: Install the DFP10 Ground Fire Hydrant ensuring it is vertically plumb and securely bolted to the underground flange connection, positioning the main valve below the frost line.
Backfill the lower section carefully, ensuring the drainage port is surrounded by clean gravel or crushed stone to facilitate proper drainage.
Use the appropriate gasket suitable for the medium and operating conditions.
Align the hydrant precisely with the pipe flange and insert bolts, tightening them gradually and crosswise in incremental steps.
Do not exceed the specified torque to prevent damage to the hydrant body or the underground pipe joint.
5. Post-Installation
Slowly open the upstream isolation valve to pressurize the hydrant, checking immediately for leaks around the flanged connection and the drain port (which should stop leaking when fully pressurized).
If leakage is detected, depressurize the system immediately and re-tighten the bolts following the cross-pattern sequence.
Verify the operating nut turns smoothly and the main valve seals completely when closed.
Record the installation details, depth of burial, and final bolt torques for documentation purposes.
Proper maintenance extends the service life of the DOP10 Plunger Valve and ensures reliable flow modulation and cavitation protection. Follow the guidelines below to maximize the longevity of this essential unit.
1. Routine Operation
Visually inspect the DFP10 Ground Fire Hydrant exterior regularly (e.g., quarterly) for visible damage, corrosion, or ground settlement around the barrel.
Operate the hydrant (full open to full closed) periodically to ensure the main valve seats smoothly and the drainage port functions correctly.
2. Inspection Schedule
Monthly, check the area surrounding the hydrant for obstructions or signs of water leakage at the base, which may indicate a failed main valve seal.
Quarterly, check the functionality of the operating nut, ensuring the stem packing is leak-free during operation and the hydrant operates within the specified number of turns.
Annually, verify the hydrant’s drainage capability by opening and closing it, listening for the distinctive sound of water draining out the barrel.
3. Lubrication
The operating stem threads and thrust bearings of the DFP10 Ground Fire Hydrant should be lubricated annually or bi-annually according to the manufacturer’s specifications.
Use only approved, potable water-safe lubricants.
4. Seal and Gasket Replacement
Replace the outlet caps and operating stem packing immediately if external leakage is observed during operation.
The main valve seat disc should be replaced if consistent leakage is detected after fully closing the hydrant.
Always isolate the hydrant from the main water line and fully bleed the pressure before performing any internal maintenance work.
5. Cleaning
Keep the exterior of the DFP10 Ground Fire Hydrant clean to prevent surface corrosion and ensure all threads (outlet and operating nut) are free of dirt and debris.
Ensure the internal drainage port and surrounding gravel base remain clean and unobstructed.
6. Storage and Spare Parts
Store spare parts (gaskets, operating stems, break-away flanges) in a dry, clean environment, away from direct sunlight and harsh chemicals.
Maintain a detailed record of all inspections, flow tests, and repairs performed on the DFP10 Ground Fire Hydrant 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 DFP10?
What are the main advantages of this valve?
The DFP10 Ground Fire Hydrant offers guaranteed high-volume water access for emergency services and includes essential features like the automatic drainage system and traffic break-away flange, ensuring reliable operation and minimizing damage risk.
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 function of the break-away flange on the DFP10 Ground Fire Hydrant?
The break-away flange is a safety feature that causes the upper barrel to shear off cleanly above the grade in the event of an impact (e.g., vehicle collision), preventing damage to the main valve and isolating the flow to prevent massive water loss.
How does the DFP10 Ground Fire Hydrant prevent freezing in cold weather?
The hydrant prevents freezing by incorporating an automatic drain valve located at the base. When the main valve is fully closed, this drain opens, allowing all standing water in the upper barrel to drain completely into the surrounding gravel base below the frost line.
How is the water main isolated for internal maintenance on the DFP10 Ground Fire Hydrant?
For internal maintenance, the hydrant must be isolated from the water main using the auxiliary gate valve or isolation valve located directly on the main line upstream of the hydrant connection flange.
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