Iplex Home > Products > Product Technical Library > PVC-U Stormwater Pipe and Fittings

PVC-U Stormwater Pipe and Fittings
Joining Instructions

Jointing Methods - Solvent Weld Joint 

Iplex Pipelines premium solvent cements and benzene free priming fluids are manufactured to AS/NZS3879. Solvent cements and priming fluids for use with PVC-U pipes and fittings.
To achieve strong leak free joints trades people should:
1) Select the correct solvent cement for the application Type P -for pressure joints with an interference fit.  Type N - for non-pressure joints that may have a small clearance.
2) Select the correct pipe and fitting using the Iplex Pipelines part list.
3) Follow jointing steps 1 - 8 carefully (page following).  Short cuts will result in poor joints that are likely to cause system failure.

How Solvent Cement works:

Iplex solvent is a solution of resin in a mixture of solvents, which soften the surfaces when applied to PVC-U pipe and fittings.  It is not a glue.  A thin uniform coat is applied to both the spigot and socket and the joint is assembled while the surfaces are still wet and fluid.  The cement layers intermingle and become one. The strength of the joint develops as the solvent permeates the PVC-U and the volatile constituents evaporate.
Iplex Pipelines - Solvent Cement - Type N:
Type N is used for non-pressure applications and is formulated with the gap filling properties needed with clearance fits.

The importance of Iplex Pipelines Priming Fluid:

Before applying the solvent cement, it is essential to use Iplex Priming Fluid for successful jointing as the fluid not only cleans and degreases, but removes the glazed surface from PVC-U which allows the solvent cement to permeate into the wall of the pipe or fitting.
It must be applied with a clean, lint free cotton cloth. Brushing the priming fluid on or simply pouring the fluid over the pipes and fittings does not remove grease and dirt.
Average number of joints per litre of Iplex Primer and Solvent:
For larger size pipes, a large brush should be used to apply the priming fluid and solvent cement.  
Nominal Pipe Size (mm)
Approx. Joints per Litre

Jointing Instructions

Do not work with hot pipes or on hot windy days without protecting pipes from the wind. Keep lid on solvent cement to minimise evaporation.
Do not use solvent over 12 months old.
Step 1 - Cut spigot square and deburr:
Cut the spigot as square as possible using a mitre box and hacksaw or power saw. Remove all swarf and burrs from both inside and outside edges with a knife, file, reamer or sandpaper. Swarf and burrs if left, will wipe off the solvent cement and prevent proper jointing. Also swarf inside pipes can become dislodged and jam taps and valves.
Step 2 - Check alignment:
Check the pipe and spigot or fittings for proper alignment. The time for any adjustments is now, not later.
Step 3 - Mark clearly:
Mark the spigot with a pencil or marker at a distance equal to the internal depth of the socket. Only use pencil or a marker. Do not score or damage the surface of the pipe or fitting.
Step 4 - Clean and soften the surface:
Thoroughly clean the inside of the socket and the area between the pencil mark and the spigot end with a clean, lint free cotton cloth dipped in priming fluid (do not use synthetic material). This removes dirt and grease and softens the PVC-U surface. Apply priming fluid immediately prior to jointing. Do no brush or pour the priming fluid on. 
*Iplex recommends the use of gloves. If contact with skin occurs, wash affected area with soap and copious quantities of water immediately.
Step 5 - Coat socket first - then spigot:
Apply a thin, uniform coat of Iplex solvent cement to the socket. Take care to ensure that solvent build up does not occur in the root of the socket - a pool of cement there will severely weaken the pipe or fitting. Now apply a uniform coat of solvent cement to the external surface of the spigot up to the pencil mark.
Step 6 - Assemble-hold for 30 seconds:
Assemble the joint quickly before the cement dries by pushing the spigot firmly into the socket as far as the pencil mark, ending with a quarter turn to spread the cement evenly. Hold the joint in this position for at least thirty seconds without movement.
Step 7 - A vital 5 minutes:
Wipe off the excess solvent cement from the outside of the joint and where possible from the inside of the joint. Do not disturb the joint for at least a further five minutes-movement may break the initial bond.
Step 8 - Curing and testing:
The cure time is the time taken for the joint to achieve sufficient strength to allow it to be tested by internal pressure or vacuum.
The minimum cure time for solvent weld joints in Iplex Stormwater pipes and fittings is 24 hours.


  •  Solvent cement and priming fluids are highly flammable. In the event of fire, smother with sand or earth or use suitable fire extinguisher.
  • Store solvent cements and priming fluid in a cool place away from heat, flames and sparks.
  • Ensure can lids are tightly closed when not in use.
  • Use solvent cements within twelve months of the date stamped on the bottom of the bottle/can. If the solvent cement has become so thick that it does not flow easily, discard.
  • Do not add any other ingredients or solvents to these products. 

Safety Precautions 

  • Do not use solvent cements or priming fluid in confined spaces without adequate ventilation, or near open flames or sparks.
  • Do not smoke while using these products.
  • If spilt on skin, wash off with soap and water.
  • If poisoning occurs, consult a doctor or Poisons information Centre.
  • Keep container sealed when not in use. 
If Swallowed:
Solvent Cement
  • Do not induce vomiting.
  • Call poisons information Centre or a doctor immediately. 
Priming Fluid
  • Do not induce vomiting.
  • Call poisons information Centre or a doctor immediately.
Avoid Contact with Eyes:
  •  If contact occurs flush with copious amounts of water. 
By following these steps exactly you should be able to make strong leak-free joints with Iplex Solvent Cement. Refer to AS/NZS2032- Installation of PVC-U Pipe systems for further guidance. Correct pipe and fitting selection is also vital. See the Iplex Pipelines part list for correct selection.

Iplex Pipelines Suppliers and Technical Representatives will be happy to answer any questions you have.


Home  •  Disclaimer  •  Terms and Conditions of Sale  •  Privacy Policy  •  Copyright © 2000-2018 Iplex Pipelines Australia Pty Limited.