We offer a small selection of hexagon reducing nipples from stock in UPVC plastic, this includes pipe fittings in sizes between 3/4" x 1/2" and 2" x 1 1/2". This range of UPVC reducing nipples all come with male BSPT taper threaded ends which conform to the BS EN 10226-1 and ISO 7-1 standards, they're also 10 bar pressure rated and have been manufactured to the BS 4346-1 standard for UPVC plastic pipe and fittings by Comer or Onyx.