Hepworth Above Ground Drainage System

Hepworth Polypropylene (PP) push–fit waste systems

Material: Polypropylene (PP) Colour: Grey Sizes: Nominal OD 1.25’’ (34mm), 1.50’’ (41mm), 2’’ (54mm)

Waste Socket Detail

P/P Pipe

P/P Retaining Clip ‘O’ Ring Seal P/P Pipe Socket

Standard The Hepworth Push-fit Waste Systems, where applicable, confirm to the standards laid down by BS EN 1451 and are entitled to carry the Kitemark. Ring seals comply with BS 2494 EN 681-1. Application To provide an efficient means of drainage of wastewater, to either a gully or soil stack, from appliances in single or multi-storey buildings. Composition and Manufacturing Waste pipe is extruded in polypropylene, and pipe fittings are injection moulded in polypropylene. ‘O’ ring seals are molded from specially formulated synthetic rubber. Effect of Chemicals PP has a high chemical resistance and is unaffected by boiling water. It is resistant to most organic acids, alkalis and aqueous solutions though subject to attack by oxidizing acids and concentrations. Consult our Technical Services Department for advice. Reaction with Other Materials Designers should provide adequate access for periodic cleaning. It is advisable to paint pipes fixed externally for protection against effects of strong sunlight. Thermal Movement Coefficient of linear expansion 1.2 x10 -4 /°C rise i.e. 1.2mm per meter per 10°C rise in temperature. An allowance for thermal movement of pipework is incorporated in each socket. For details, refer to Fixing Instructions. Effect of Solar Radiation PP is affected by ultra-violet light, so painting of external pipework is recommended. (Internal pipework is not affected.) Effect of Frost Frost does not affect the operation of the systems. Sub-zero temperatures, however, reduce the impact strength. Flammability Flammability = 1 inch per minute. Test method: BS 2782 Method 508A. Model Specification All waste systems to be Push-Fit ring seal type to BS EN 1451, manufactured in accordance with their instructions. Operating temperature 60 - 75 0 C

Applications • Inside the building

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