Hepworth Above Ground Drainage System

Soil and Waste Installation Instructions

Jointing (Push-Fit System)

Step 1. Ensure that the pipe is cut square and chamfered prior to assembly, with fittings. Step 2. Lubricate the pipe and fittings with Silicone Lubricant and push-fit to full socket depth. Step 3. Withdraw the pipe by 5mm on system and 10mm on soil system to allow for expansion. Step 4. Soil fittings with spigot ends should be inserted into sockets to depth marks engraved on spigot. This procedure automatically allows for expansion. Step 5. Anchor fittings with a socket bracket to maintain expansion allowance.

Solvent Weld System

Step 1. The pipe spigot to be cut square and clean. Remove all swarf. A chamber to the depth of half the wall thickness at 15° inclination will be applied to each spigot. Step 2. All joints will be made with an approved solvent / cleaner, such as Parabond P14 Solvent and Parabond C-70 Cleaner. This removes all dirt and machine release agents, and softens the surface ready for the chemical solvent weld. Failure to do this can result in joint failure. Step 3. The spigot and socket to be jointed should be carefully examined for any damage, which would impair the jointing procedure. Step 4. The spigot insertion depth should be measured as the depth from the mouth to the shoulder of the socket. The insertion depth should then be marked on the spigot using an indelible crayon. Step 5. The mating areas of the spigot and socket should be thoroughly cleaned using the cleaning fluid provided, using a clean rag or absorbent paper. N.B. Manmade fibers must not be used to clean the joints that are to be solvent welded. Step 6. Using a brush, apply an even layer of solvent cement to the mating surface of the spigot and socket. The cement should be applied in a lengthwise direction and NOT in a circular motion. For joints of nominal diameter of 3 and above, the cement should be applied simultaneously to the spigot and socket by two people. Step 7. Immediately following the cement application, ensure that the parent pipe is suitably anchored, and push the spigot fully home in the socket without turning the pipe. Step 8. The spigot should be inserted with a steady, continuous motion and held in place for 20 seconds. Step 9. Remove the surplus cement from around the mouth of the socket.

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