SOLVENT CEMENT JOINTING
To ensure a permanent solvent cement join, the following procedure should be followed:

1. When a solvent joint involves a pipe, the pipe end must be cut square and all burrs removed.

2. Clean both surfaces to be joined, making sure they are free from dirt, grease and water.

3. With a clean brush apply Brett Martin solvent cleaner.

4. Again with a clean brush apply Brett Martin solvent cement to both surfaces to be joined: apply the brush along the surface, not around it.



5. Immediately insert the coated pipe end or fitting spigot into the coated fitting socket, using a slight twisting motion to ensure correct spread of adhesive and removal of air bubbles. If cemented surfaces are left unjoined for longer than 90 seconds, bonding will not be totally effective.



6. Hold the joint still for 30 seconds for initial bonding to take place; wipe off excess solvent cement: leave for a further 2 hours to gain strength: do not test for at least 24 hours.





BOSS CONNECTIONS
When making a connection to a fitting incorporating a boss, the following procedure should be followed:

1. Locate the point of an appropriate size drill bit in the central locator moulded at each boss position.



2. Drill out the fitting wall in the centre of the boss and remove swarf.

3. Select the boss adaptor appropriate to the boss size and the size of the branch connection being made, and push-fit or solvent weld in position using the procedure for solvent welding outlined above.

STRAP-ON-BOSS CONNECTION
The strap-on-boss permits connection of a discharge pipe up to 50mm diameter to a soil stack at any time after the stack has been erected. The fitting procedure is fairly simple


1. At the desired position on the downpipe drill a hole to accomodate the rear locating flange of the boss.


2. Apply solvent cement to the edge of the hole and around the flange: locate the straps around the pipe with the flange located in the drilled hole, and hold for two minutes for initial bonding to take place.


3. Remove excess cement and fit the nut and bolt to the rear of the straps. When the join is thoroughly dry fit the boss adaptor appropriate for the diameter of discharge pipe to be accomodated.

BOSS ADAPTOR SELECTION
When the branch connection is of a push-fit type, select adaptor BW1, BW2, or BW3 for 32mm, 40mm and 50mm diameters respectively, and insert into the boss using the same technique as for any other push-fit connection. When the branch connection is of a solvent weld type, select adaptor BW4, BW5, or BW6 for 32mm, 40mm and 50mm diameters respectively, and solvent weld into the boss.These adaptors have an inbuilt fall of 2.5º. To ensure correct fitting there is a mark on each adaptor which should always be at the top.

Alternatively BW7, BW8 or BW9 provide a solvent weld connection for the incoming waste pipe.