Slip-Type Joints
Slip-Type Joints
ADSCO slip-type expansion joints provide a low-maintenance solution with exceptional value, allowing for axial movement between lengths of piping.
District Heating and Cooling
District heating and cooling systems are subject to constant temperature changes, which can cause piping in those systems to expand and contract. Expansion joints help them adapt to these changes.
Expansion Joints for District Heating and Cooling
All the way back in 1877, our founder, Birdsill Holly, developed the first commercially successful district steam heating system, and our innovation in the field continues to this day.
District heating and cooling systems are subject to constant temperature changes, which can cause piping in those systems to expand, contract, and otherwise be displaced over time.
Expansion joints give piping systems the flexibility to adapt to these changes without rupturing, cracking, or sustaining other types of damage.
With ADSCO expansion joints in place, you can be confident and assured that your piping systems are protected from damage, ensuring the safe and reliable transfer of materials within.
Featured Applications
Piping in district heating and cooling systems regularly experiences intense vibrations and fluctuating temperatures.
Expansion joints mitigate the damage caused by these forces by allowing the piping to accommodate movement and absorb vibration.
District heating and cooling systems transport water through large piping systems, and it’s between the lengths of pipe in those systems where expansion joints, such as slip-type and bellows joints, are installed.
We design and manufacture expansion joints engineered to seal pipes and protect them from damage, allowing for reliable operation in extreme temperatures and other harsh conditions.
Our Products used in District Heating and Cooling
Bellows
Bellows
A versatile solution enabling a wide range of movements, bellows-type joints extend, bend, and retract with accordion-like corrugations.
Spider Type Pipe Guides
Spider Type Pipe Guides
Spider style piping guides protect pipes from damage by preventing too much movement, while keeping them properly positioned.
District Heating and Cooling FAQs
Looking to learn more? Here are answers to some commonly asked questions:
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Why are expansion joints necessary in district heating and cooling systems?
District heating and cooling systems involve transporting hot water, steam, or chilled water over long distances through underground or above-ground pipelines. As the fluid temperature changes, the pipes expand and contract significantly.
Expansion joints are used to absorb this thermal movement, preventing stress on pipes, welds, joints, and building connections.
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How do underground district energy pipelines handle expansion and movement?
In underground systems, expansion joints are often paired with expansion loops or bends, and the joints themselves are installed in vaults or manholes for accessibility. Since underground pipes can’t flex easily, expansion joints absorb the thermal movement and prevent soil stress or joint damage.
The joints in these cases are often externally pressurized and feature corrosion-resistant coatings or jackets to protect them from groundwater, soil chemicals, or mechanical wear.
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How do expansion joints improve the efficiency and safety of district heating and cooling systems?
Expansion joints help ensure that:
- Thermal losses are minimized by preserving proper pipe alignment and insulation integrity.
- Mechanical failures are avoided, reducing the risk of service interruptions or expensive emergency repairs.
- Pressure surges and vibration are absorbed, which protects pumps, valves, and building-side heat exchangers.
Building penetrations and service connections remain intact and leak-free over time.
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How should expansion joints in district heating and cooling systems be maintained properly?
Best maintenance practices include:
- Regular visual inspections, especially in vaults or accessible locations.
- Monitoring for leaks, misalignment, or insulation damage.
- Checking anchor points and guides, which work in tandem with expansion joints to manage movement safely.
- Ensuring waterproofing and corrosion protection remains intact, particularly for buried joints.
- Documenting inspection intervals and service life to schedule replacements proactively.
Preventive maintenance is crucial—if an expansion joint fails in a buried system, excavation and repair can be costly and disruptive to service delivery.
