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You are here: Home > Lawn Irrigation > Fittings > PVC Repair Fittings > PVC Expansion Couplings

PVC Expansion Couplings

PVC expansion couplings allow you to protect your PVC pipe runs from extreme temperature changes. Without expansion couplings to compensate for temperature-caused expansion and contraction, serious damage to your piping can occur.

We carry a wide selection of sizes for every application, and the easy-to-use design and durable construction will make our expansion couplings a breeze to work with.

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Aqualine PEC-050 PVC Expansion Coupling (1/2 in.)
Aqualine PEC-050 PVC Expansion Coupling (1/2 in.)
  • Protects PVC pipe from temperature-related damage
  • Expansion coupling compensates for temperature-caused expansion and contraction
  • Includes double O-ring

Our Price: $1.68
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Aqualine PEC-075 PVC Expansion Coupling (3/4 in.)
Aqualine PEC-075 PVC Expansion Coupling (3/4 in.)
  • Protects PVC pipe from temperature-related damage
  • Expansion coupling compensates for temperature-caused expansion and contraction
  • Includes double O-ring

Our Price: $2.66
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Aqualine PEC-100 PVC Expansion Coupling (1 in.)
Aqualine PEC-100 PVC Expansion Coupling (1 in.)
  • Protects PVC pipe from temperature-related damage
  • Expansion coupling compensates for temperature-caused expansion and contraction
  • Includes double O-ring

Our Price: $3.50
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Aqualine PEC-125 PVC Expansion Coupling (1-1/4 in.)
Aqualine PEC-125 PVC Expansion Coupling (1-1/4 in.)
  • Protects PVC pipe from temperature-related damage
  • Expansion coupling compensates for temperature-caused expansion and contraction
  • Includes double O-ring

Our Price: $5.05
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Aqualine PEC-150 PVC Expansion Coupling (1-1/2 in.)
Aqualine PEC-150 PVC Expansion Coupling (1-1/2 in.)
  • Protects PVC pipe from temperature-related damage
  • Expansion coupling compensates for temperature-caused expansion and contraction
  • Includes double O-ring

Our Price: $7.25
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Aqualine PEC-200 PVC Expansion Coupling (2 in.)
Aqualine PEC-200 PVC Expansion Coupling (2 in.)
  • Protects PVC pipe from temperature-related damage
  • Expansion coupling compensates for temperature-caused expansion and contraction
  • Includes double O-ring

Our Price: $10.00
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  • Turn off water and separate the broken sections of the pipe or cut out the broken section with a saw or pipe cutter
  • once the water has drained from the pipe sections clean the area surrounding the ends of the exposed PVC pipe.


  • Apply PVC primer and/or cement/glue to the clean pipe ends. Be sure to go all the way around the pipe.


  • Apply primer and/or glue/cement to theinside of the pipe repair coupling.
  • Slide the pipe repair coupling onto the exposed ends of the PVC pipe


  • Allow the glue to set for at least 30 seconds before turning on the water.
  • The new repair is now permanent and stronger than ever before.

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