The materials used in the Equator system are listed and accepted by WBS - Water Byelaws Scheme for use in domestic installations in all the UK¹s regional water authorities. The PE-X pipe system offer excellent design flexibility with temperature tolerances ranging from 120 ºC to - 20 ºC. The inherent composition of plastic pipe makes the system very light in weight, roughly one quarter that of equivalent copper pipework. Scale build up and noise from water hammer are negligible with Equator pipe.

Application	Nominal system flow temperature ºC	Max system service temperature ºC	System malfunction temperature ºC	System working pressure bar
Cold water system	20	20	-	12
Vented hot water systems	65	83	100	3.5
Unvented hot water systems including instantaneous heaters and/or incorporating storage (excludes discharge pipes from temperature and/or pressure relief valves)	65	95	100	6.0
Vented central heating systems	82	95	100	3.5
Sealed central heating systems (excludes discharge pipes from temperature and/or press ure relief valves)	92	105	114	3.0
Underfloor heating	60	83	100	3.5
Note BS 5449 states that the central heating design flow temperature shall not exceed 82 ºC. Pipe circuits prone to repeated high level over heating such as found in gravity solid fuel and solar heating systems are not suitable for Equator

Table 1

Equator is classified in accordance with BS7291 Part 3 Class S. The design life of Equator is at least 50 years when used for the applications and operating conditions listed in Table 1. Equator may also be used in hot climates and for applications such as grey water systems. For this type of application, where the cold water will become warm, without the use of a heating appliance, the maximum warm water operating limits are shown in Table 2 below.

Operating water temperature, °C	Maximum pressure rating, bar
30	11.5
40	11
50	10.5