DFT14 G F Piece
Devinsan offers structural stabilization components engineered for efficient reinstatement of pipeline integrity and secure flanged replacement across wide, non-standard gaps. Designed for enduring reliability and maximum compatibility, these DFT14 G F Piece units utilize robust end restraints and wide-tolerance seals to meet the critical demands of modern municipal pipe repair and maintenance projects.
Production Standard
Nominal Dimension (DN)
Nominal Pressure (PN)
Operating Temperature
Coating
Testing
DN 50 – DN 400
PN 6-PN 10-PN 16-PN 25-PN 40
-30° / +200°
Electrostatic Powder Epoxy
EN 12266-1
Application Areas
The DFT14 G F Piece 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 DFT14 G F Piece ensures precise fluid control, maintains excellent sealing integrity, and supports efficient, safe operation even under demanding conditions.
The DFT14 G F Piece is a high-performance flanged adapter coupling specifically engineered to bridge significant axial gaps between a plain pipe end and a corresponding pipe of the same nominal size. Designed to meet the stringent demands of modern infrastructure, this specialized fitting ensures rapid field installation, superior joint integrity, and long-term durability in complex emergency repair scenarios where precise pipe length measurements are challenging.
At the core of the DFT14 G F Piece is its multi-segment body and wide-tolerance sealing gasket system, offering substantial longitudinal adjustment capability. This design allows the coupling to easily span non-standard gaps created during pipeline repairs, accommodating pipes of differing external diameters (O.D.) and materials. The robust mechanical mechanism ensures that the segmented sleeve exerts uniform compression onto the pipe surface, guaranteeing a leak-free seal under system pressure.
Manufactured from high-strength, corrosion-resistant materials and built with a heavy-duty, sectional body, the DFT14 G F Piece is designed to withstand continuous system pressure and harsh burial environments. The key difference is its construction, which focuses purely on coupling two plain pipe ends together with maximum reliability and restraint. This simple bolt-and-lug design simplifies field assembly, achieving a high-pressure seal with minimal effort.
The DFT14 G F Piece is ideally suited for applications in large-scale burst repair, scheduled replacement of pipe sections, or any scenario demanding a quick, versatile solution to bridge a non-standard gap in the pipeline. Its wide-range longitudinal and multi-material adaptability make it a preferred choice for engineers seeking a high-integrity, standards-compliant solution for long-term network recovery and stability.
In summary, the DFT14 G F Piece offers an optimal combination of pipe compatibility, structural joint strength, and unparalleled adaptability for bridging large axial gaps. With its wide-range mechanical extension, robust sealing mechanics, and focus on emergency field repair, this unit stands as a trusted solution for modern fluid control and complex pipeline integrity requirements worldwide.
1. General Information
The DFT14 G F Piece is designed for joining two plain-ended pipes (without flanges) across substantial axial gaps, requiring minimal pipe preparation. Proper installation is essential to guarantee safe operation, long service life, and sustained leak-free performance.
2. Safety Precautions
Installation must be performed by qualified personnel only.
Ensure strict compliance with all local safety regulations and standards concerning working with pressurized pipelines and deep excavation safety.
Wear appropriate personal protective equipment (PPE).
Confirm that the pipeline section is fully depressurized and drained before attempting to install the DFT14 G F Piece.
3. Pre-Installation Checklist
Inspect the DFT14 G F Piece for any visible damage during transport or storage, paying attention to the coupling bands and rubber gasket condition.
Check that the coupling size and pressure rating match the system requirements.
Verify that the interior and gasket seating area are clean and free from debris.
Confirm that the mating pipe ends are properly aligned (axially) and that the pipe exterior surfaces are clean where the coupling will seat.
Ensure all necessary bolts and washers are available.
4. Installation Procedure
Positioning: Slide the DFT14 G F Piece fully onto one of the pipe ends.
Clean the exterior surfaces of both pipe ends thoroughly to ensure optimal gasket sealing.
Align the second pipe end into the coupling opening. Slide the coupling band from the first pipe end over the joint, ensuring the end is separated by the internal stop (if present) and that the coupling is centred over the joint.
Insert the bolts and tighten them sequentially and evenly in a cross-pattern to the manufacturer’s specified torque.
This uniform tightening compresses the gasket, creating the final seal.
5. Post-Installation
Slowly reintroduce fluid and pressurize the system, checking immediately for leaks around the circumference of the coupling.
If leakage is detected, depressurize the system immediately and verify the pipe alignment and re-tighten the bolts following the cross-pattern sequence.
Record the installation details, pipe types joined, and final bolt torques for documentation purposes.
Proper maintenance extends the service life of the DFT14 G F Piece and ensures reliable joint integrity and sealing performance. Follow the guidelines below to maximize the longevity of this essential unit.
1. Routine Operation
Visually inspect the DFT14 G F Piece area regularly (e.g., annually) for signs of external leakage, soil erosion around the joint, or movement of the piping.
Monitor the surrounding environment for any chemical spills or corrosive agents that could degrade the rubber gasket material.
2. Inspection Schedule
Monthly, check the visible bolts for signs of loosening or severe corrosion.
Quarterly, check the ground surface above the buried coupling for signs of heaving or settling, which may indicate pipe movement or inadequate support.
Annually, perform a detailed inspection by excavating the joint (if buried) to check the gasket for deterioration and the bolts/bands for corrosion.
3. Lubrication
The DFT14 G F Piece is a mechanical coupling and requires no lubrication after installation.
The rubber gasket should be kept clean during storage and installation to ensure proper seating.
4. Seal and Gasket Replacement
The sealing gasket should be replaced if external leakage is observed that cannot be stopped by re-tightening the bolts to the specified torque.
The entire DFT14 G F Piece should be replaced if the metal bands or lugs show significant corrosion or structural deformation.
Always isolate and fully depressurize the pipeline section before attempting to disassemble the coupling.
5. Cleaning
The exterior of the DFT14 G F Piece should be kept clean before burial.
After excavation, clean the coupling and inspect the coating integrity before reburial.
6. Storage and Spare Parts
Store spare parts (gaskets, bolts, coupling bands) in a dry, clean, and cool environment, away from direct sunlight, ozone, and temperature extremes, which can degrade the rubber.
Maintain a detailed record of all inspections, bolt torque checks, and repairs performed on the DFT14 G F Piece 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 DFT14?
What are the main advantages of this valve?
The DFT14 G F Piece offers unique long-range adjustability for bridging gaps in damaged pipe sections, enabling rapid and versatile repair of pipelines that have experienced stress failure or require segment replacement.
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.
How does the DFT14 G F Piece simplify emergency repairs?
It simplifies repairs by allowing crews to bridge large, non-standard gaps created by pipe removal without requiring precise cutting or special flanges, which significantly speeds up the time needed to restore service following a burst.
Can the DFT14 G F Piece be used to connect pipes with different materials?
Yes. The DFT14 G F Piece utilizes a wide-tolerance sealing system which is capable of sealing securely onto pipes of dissimilar materials, such as connecting steel to ductile iron or PVC, provided the outer diameter range is compatible.
Is the DFT14 G F Piece designed to absorb vibration?
While the rubber gasket provides some inherent dampening, the DFT14 G F Piece is primarily designed for static sealing and accommodating length changes/gaps, not for absorbing continuous, high-frequency vibration from machinery.
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