Choosing the right tap for the job has become an important factor before making a purchase.

Most fittings will suit any type of plumbing system with some requiring more specific requirements. Such systems are:

- Gravity fed systems – hot and cold water tanks
- Gravity / mains system – hot water cylinder and cold mains
- Pressurised / unvented systems – as above but hot pressurised by cold water mains
- Pumped systems – gravity system with pump to boost water flow
- Combination boilers – instant hot water (no hot or cold tanks)