How do you adjust a Holby mixing valve?
The temperature of the water delivered by the HOLBY TEMPERING VALVE can be changed by turning the adjusting screw clockwise for lower temperatures and counter-clockwise for higher temperatures.
What temperature should a mixing valve be set at?
The recommended and also factory set temperature setting is 120 F. If the temperature is 120 F, it will take 5 min for 2nd and 3rd-degree burns on the adult skin.
What is the difference between a mixing valve and a thermostatic mixing valve?
A tempering valve is accurate to around 3℃ +/-, while a thermostatic mixing valve can keep the water to 1℃ +/- and responds faster than a tempering valve to changes in incoming water temperature. TMV’s are designed specifically for use in facilities used by high-risk persons such as: aged care centres.
What causes a mixing valve to fail?
Inconsistent hot water – older model hot water mixing valves can begin to fail to correctly control water temperature as they age with use, and may lack newer temperature balancing features that can effectively maintain any fluctuations in water temperatures that occur within the plumbing system.
Is a mixing valve code?
Master mixing valves are not mandated in the model plumbing codes, but it is good design practice for a constant hot water supply temperature. Domestic hot water systems are unique in that a change of equipment in one part of the system can and most likely will affect the performance of another part of the system.
How long does a thermostatic mixing valve last?
Your brass mixing valve should last a very, very long time-lifetime (if not damaged). Hard water is more likely to affect cartridge (if you have one) and wears it out earlier than in areas where water is not so hard. I just had to replace my cartridge after only 5 years.
Is a mixing valve necessary?
Mixing valves are part of a temperature control system for hot water. The valve also allows the tank temperature setting to be higher than 49C (120F). Some argue that this is necessary to reduce risk of Legionnaires disease, but that point is debatable.