15mm Auto Bypass Valve

  1. 15mm Auto Bypass Valve Repair Kit
  2. Honeywell Straight Auto Bypass Valve 15mm
  3. 15mm Auto Bypass Valve Gasket

By far the easiest way for me to do this would be to use a straight bypass valve to simply replace the current gate valve, but would it be okay if the 15mm pipework was kept with 2 15/22 reducers and the valve mounted vertically (with the red valve top horizonal)? Intatec – 22mm Automatic Differential Bypass Valve ABPA401022. 22mm Automatic Bypass valve ideal as a manufacturer required boiler by-pass or as a system bypass to accommodate pump overrun and alleviate system noises that can be caused by pressure increases when heating zone valves.


Centre Size

80mm Centres

15mm auto bypass valve wrench
Temperature Rating

-10 - 120°C

15mm Auto Bypass Valve Repair Kit

End Connections

System side - BSP Female Taper Terminal side - BSP Female Taper

15mm Auto Bypass Valve

Please refer to Datasheet for full technical information


The Crane Fluid Systems Dominator Z3000 flow management system for fan coils has improved on the traditional practice of connecting individual valves and pipework.

The Dominator is a very compact combination of valves, incorporating a patented bypass valve unit comprising two T-ported ball valves, that dispenses with all the connecting pipework. This innovation dramatically reduces the space needed, allowing a much faster and more compact connection. There is also the added risk-free advantage of using a factory-tested component of known performance.

15mm auto bypass valve stem

Features & Benefits

Honeywell Straight Auto Bypass Valve 15mm

  • Flow management system for fan coil units
  • Combines the essential control components and connecting pipework into one compact, fully assembled unit ready to connect
  • The Z3000 is compact and lightweight
  • The bypass valve unit comprises two T Ball valves
  • The strainer unit has integral filter and pressure test point, plus drain cock/vent facility
  • Balancing valve is of proven high quality and accuracy



15mm Auto Bypass Valve Gasket