- Simple care instructions for a central heating TRV (Thermostatic Radiator Valve) and a look inside at how they work.
Content chapters
0:00 Introduction and basic operation of valve
0:42 Care instructions
2:08 How to test and fix common fault
4:24 Getting the head back on
5:31 Diagram of the head and body
5:51 The head components with diagram
10:54 List of head faults and failures
12:23 The body components with diagram
13:45 Partial disassembly of the valve body
13:49 How I've isolated the radiator to remove the cartridge
16:32 Removal and look at valve cartridge
18:43 Using a reseating tool (not recommended)
20:04 Reassembly of valve body
20:44 List of body faults and failures
22:05 Use of WD40 (not recommended)
22:30 Mechanism of how they get stuck in the closed position
23:30 another option to help release a stuck valve
- I explain the internal structure and working principle of the TRV in both the head and the body of the TRV. Essentially how they work. With a schematic diagram to show valve operation.
- Simple care instructions to reduce the possibility of binding of the valve during the off season.
- I discuss the most likely causes of the binding/sticking and other possible faults in both the head and the body of the TRV.
- I also go through a few of the common fixes reported online and give my opinion of their effectiveness.
- Finally I will disassemble the valve and remove the cartridge, which shows the tap mechanism in plain view.
This is based on the simple design of the TRV as seen in this video. Some manufacturers also build in additional flow or pressure control, into their product offerings. This provides a combined method to allow for balancing heat flow, all in a single TRV. This means the opposite radiator valve, which is normally used for balancing, is then simplified for radiator isolation purposes only. These combined TRVs are fundamentally similar but the additional builtin feature can make the internal valve seat much more complicated because of the many more components involved.
Please note that all the facts in this video, I have worked out predominantly through logical deduction, looking at evidence based YouTube videos and manufacturer's websites. So rather than just repeating what other people have said, I have based the information on what I can see physically, tangible facts I have found on-line and my own personal experience.
If the content was useful to you please subscribe: [ Ссылка ]
Editor used was: the excellent free version of Black Magic's Davinci resolve 17.
Camera: is unworthy of a mention
Lighting: Hopeless
