A Leading supplier for domestic and heating controls, Honeywell produce a top quality range of plumbing parts and accessrories for JTM plumbing. Choose from our range of programmers, timers and thermostats on JTM Plumbing today. Honeywell have been a top manufacturer since 1886 when the brand first began producing its top quality parts. Take a look at JTM Plumbing for a great range of Honeywell plumbing parts and fittings.