Corzan and FlowGuard Gold CPVC Joining Instructions

In multi-story residential construction projects like hotels, condos, senior living centers and apartments, there may be a need to use piping larger than the 2” maximum size of FlowGuard Gold CPVC. In these situations, using Corzan CPVC risers and/or mains with FlowGuard Gold CPVC for distribution and partition piping delivers multiple benefits to contractors, building owners and occupants.

Joining Instructions

The following are general instructions for joining FlowGuard Gold (CTS) pipes to Corzan (IPS Schedule 80) risers or mains.

1.  Determine the type of adapters/fittings required. 

1. If you are transitioning from one pipe size to another in a straight run, a transition fitting and/or bushing may be used. Use a CPVC adapter or bushing specifically designed to connect IPS to CTS, and confirm the nominal size and outside diameter of both pipes to ensure a proper fit. Transition couplings are typically available at ¾”, 1” & 2” diameters while transition bushings are available from ½” – 2”.
2. If you are creating a branch off a Corzan riser or main, a reducing tee fitting and an IPS-to-CTS transition bushing or adapter will be required.

2. If creating a branch line, install the tee fitting to the main or riser.

1. Cut the Corzan CPVC riser pipe squarely using a pipe cutter or fine-tooth saw. Ensure the cut is clean and free of cracks.
2. Remove all burrs and filings from both the inside and outside of the pipe using a chamfering tool or file. For pipes 2 inches and larger, add a 10–15° chamfer (about 3/32 inch).
3. Wipe the pipe end and the inside of the tee fitting socket with a clean, dry rag to remove dirt and moisture.
4. Insert the pipe into the tee fitting socket to check the fit. The pipe should enter 1/3 to 2/3 of the socket depth with a snug fit but should not bottom out easily. If it does, select a new fitting
5. Apply CPVC primer conforming to ASTM F656 to the outside of the pipe end and the inside of the tee fitting socket using a proper applicator. Apply a second primer coating inside the fitting socket if needed.
6. Then apply two-step CPVC solvent cement liberally to the pipe end and sparingly to the fitting socket. Use only CPVC solvent cement conforming to ASTM F493, which is orange in color.
7. Immediately after applying cement, insert the pipe into the tee fitting socket while rotating it 1/8 to 1/2 turn until it reaches the fitting stop.
8. Hold the assembly together for 10–30 seconds to ensure proper bonding and to prevent push-out

3. Once the tee fitting has been installed, check the interference fit of the bushing with both the Corzan and FGG fitting.

The pipe, fitting and any bushings should not bottom out while dry.

4. Prepare the FlowGuard Gold pipe for installation.

1. New FlowGuard Gold pipe can be cut using ratchet cutters, wheel cutters, or a fine-tooth saw. After cutting, if any indication of damage to the pipe is visible at the piping end, cut back at least 2” beyond the visible damage
2. Remove any burrs or filings and bevel the end of the pipe using a chamfering tool. If a chamfering tool is not available, a sharp knife or file are suitable but not preferred.
3. Using a clean, dry rag wipe away any dirt and moisture from the joint surfaces.

5. Solvent Weld the Corzan and FlowGuard Gold CPVC

1. Corzan piping is gray in color. If solvent welding Corzan pipe to Corzan fittings, or Corzan fittings with a FlowGuard Gold bushing, use the two-step solvent weld process described in step 2.
2. FlowGuard Gold CPVC piping is tan in color and uses a one-step solvent weld process. If solvent welding a FlowGuard Gold CPVC bushing or fitting to FlowGuard Gold CPVC piping the following one-step solvent weld process can be used
   1. Apply a heavy, even coat of FlowGuard Gold one-step solvent cement to the outside of the pipe end. Then, use the same applicator, without additional cement, to apply a thin coat inside the fitting socket. Do not allow excess cement to puddle in the fitting and pipe assembly.
   2. Immediately after applying solvent cement, insert the FlowGuard Gold pipe into the bushing or adapter, rotating the pipe ¼ to ½ turn while inserting to ensure even distribution of cement. Hold the assembly for approximately 10 seconds, allowing the joint to set.

6. Verify proper installation. 

1. An even bead of cement should be visible around each joint.
2. If this bead is not visible it may indicate that solvent cement was not properly applied. In this case, disassemble and remake the joint to ensure system integrity.