FRP vessels are used in the reverse osmosis and ultrafiltration. They are made from polyester, vinylester or epoxy resins:

Standard pressure

	PN 6
	PN 16
	PN 25
	PN 42
	PN 60
	PN 70

Standard diameter – length from 1 to 6 meters

	DN 200
	DN 220
	DN 250
	DN 300
	DN 350

Some advantages of composites – FRP

	Good mechanical properties and also low weight
	Lower installation and maintenance cost compared with other materials
	Excellent chemical resistance
	Good behaviour under high temperature
	Good insulation
	Low linear dilation
	Lightweight
	Exceptional resistance to corrosion
	Long life
	No maintenance
	Electric insulation
	Easy to repair in case of accidental damage
	Suitable for food application
	Translucent material – allows visual or allowing inspection of the product stored inside