Basic Facts on How Arrow Cements Work

1. Arrow plastic pipe solvent cements work by solvent action.
2. When cement is applied, solvent action softens (dissolves) the pipe and fitting surfaces, preparing them for joining. (See Fig. 2)
3. A few seconds after joining, the interference section fuses together. The non-interference section is bonded together. (See Fig. 3)
4. The joint cures by evaporation of the cement solvents. If possible, allow 24 hours before pressure testing – longer in cold weather.

Important Points for Trouble-Free Use

Interference Fit

• Required for proper solvent action.
• 1/3 to 2/3 dry fit is best. (See Figure 1) ‘Dry fit’ is without cement.
• If pipe fully inserts in fitting, it should be snug. Avoid loose fits.

Pipe Cut

• Cut pipe square and remove burrs to avoid leaks.

Proper Cleaning

• Remove all dirt, oil, moisture and surface gloss for best results.
• Arrow 901 Cleaner can be applied to non-pressure systems and ABS pipe/fittings.

Apply Primer

• Vigorously apply Primer to PVC and CPVC pipe/fittings.

Proper Cement

• Check that cement is recommended for pipe type, diameter, application and for use in your specific working conditions.
• Make sure cement is free-flowing and not gelled.

Apply Cement

• Apply a heavy coat of cement to pipe, a light coat to fitting socket and another coat to pipe.

Join Pipe & Fitting

• Use a slight twisting motion to insert pipe into fitting until it bottoms and hold for a few seconds to prevent pipe from pushing out.
• A joint should fuse (‘Grab’) shortly after joining pipe and fitting. If not, avoid using as it may pull out or leak.

Cement Bead

• A cement bead will appear at pipe/fitting interface if enough cement was used.
• Wipe off bead to speed joint curing.

Curing

• Allow sufficient curing time (24 hours is best) to assure a strong joint.