This Reducing bush is designed to be solvent welded into the socket of another fitting. This will allow for the attachment of a smaller sized pipe.
Reducing bushes will be needed when connecting piping or fittings of different sizes. They can also be used to transition from one pipe type or size to another. The reducing bush my be an essential part in the water system as it allows for situations where a pumps outlet or inlet maybe far bigger than necessary. By using a reducing bush the pipe used can be a fraction of the size saving money.
Keep in mine that when using a reducing bush on a pump careful decisions are needed as the fluid interacts with the reducing bush which causes vibrations.

SubTronic Data120 Kit only-0,56 kW
Atlas Copco WEDA D60SH 380-400V D 50HZ - No Float
Atlas Copco WEDA D08 - 230V/1Ph - No Float
Electromote 0.18kW Three Phase Aluminium IE1 Motor Class F Insulation IP55 2-pole Foot mount
20X25mm-Reducing bush - upvc solvent weld / glued
Atlas Copco WEDA D80H 400V submersible Drainage pump
Female coupler x female BSP 40mm
Atlas Copco WEDA D10N 525v Drainage pump
Atlas Copco WEDA D04B Low Suction Single phase Drainage pump
MICRO ALUM COMPL 1M 360 YEL PK 3
Atlas Copco WEDA D30L 240v Drainage pump
KAUFMANN 15MM ADJUSTABLE BRASS SPRINKLER
15mm-Plastic ball float valve
MICRO COMPL PEG & TUBE 360 ORANGE PK 3
Foras FTR 150 GRINDER
Female coupler x hose tail 40mm
55 Watt Stainless steel-Professional Range UV c/w Quartz Sleeve
8 Watt - tank cap. 180 l Aquarium UV's (Fresh Water)
wilo jayline jdsk-20a 230v
90mm Single union ball valve-Socketed Solvent Weld
Elbow 90? 8mm
25X20mm-reducing socket - upvc solvent weld / glued
15mm X 20mm uPVC male adaptor
Compression fitting 45° 25mmX1/2inch Male elbow
Male adapter x male BSP 100mm
Franklin SS 612/09 
