What type of material should I use for the discharge pipework ?
All discharge pipework should be either copper or rigid solvent weld plastic. Flexible pipes (e.g. those normally using metal grab ring joints) can be used. However, this pipework is ony suitable if used without joints since these tend to narrow the bore of the pipe, and also it should be supported every 1/2 metre to avoid dipping in the pipe-run. Do NOT use 90deg bends in rigid solvent weld plastic. Instead, use 2 x 45 deg elbows back to back. We also advise to instal an isolation valve as near to the pump as possible. This will allow the unit to be removed easilly and alleviate waste from the head spilling onto the floor or cabnetry.
