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Worse, sometimes there is no hot water scald protection at all. The only water temperature control we typically find are mixing valves at the hot water source.

In the course of inspecting several thousand buildings between 19 I have almost never found anti-scald devices at individual plumbing fixtures in private homes. In my experience with plumbing and heating installers, home inspectors, and consumers, these terms: automatic compensation valve, mixing valve, tempering valve, anti-scald device, are thrown about in a blizzard of usages that treat the words as synonyms. Those sorts of anti-scald devices are also discussed in this article. That advice means that besides these mixing valves that are typically installed at the water heater or tankless coil, separate anti-scald protection devices are available for installation at the point of use: sink, shower, or tub etc. Standard 1016, 1069 or 1070 listed devices should be used at fixtures to prevent possible injury. discussedĪnd mixing valve manufacturers take care to refer to products like the Sparco control shown above and the Watts mixing valve shown later on this page as a mixing valve or tempering valve.Īnd the manufacturers (Watts for example) typically add that point of use scald protection should be installed: Watch out: definition of mixing valve, tempering valve, anti-scald valve: most likely because of a combination of product liability concerns and because of the manufacturer of a mixing valve cannot control what other plumbing installation or operating details are followed at individual buildings, both heating boiler manufacturers (Crown Boiler Co. mixing or tempering valve: manufacturers recommend point-of-use anti-scald protection

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We describe and illustrate various types of automatic and manual mixing valves, anti-scald valves, or compensating valves in this article.

POINT of USE BUILT-IN FIXTURE ANTI-SCALD VALVES at individual plumbing fixturesĭefinition of an anti scald valve or compensating valve - to avoid hot water burnsĪnti-scald valves are used on heating and plumbing systems to avoid hot water burns at plumbing fixtures such as sinks, showers, and tubs.Īn anti-scald or mixing valve mixes cold water with the outgoing hot water either automatically or manually to make sure that a person using the plumbing fixture won't be scalded.

HOT WATER QUANTITY IMPROVEMENT via ANTI-SCALD VALVE at the water heater.

ANTI SCALD VALVE at TANKLESS COIL at the boiler.

ANTI SCALD VALVES / MIXING VALVES - home.

Other texts refer to these safety controls as mixing valves or compensating valves or temperature compensating valves. Photo: a Sparco anti-scald valve or tempering valve installed at a hydronic heating boiler. Guide to Mixing Valves and Anti Scald Valves on Heating Equipment & Plumbing Fixtures We also provide an ARTICLE INDEX for this topic, or you can try the page top or bottom SEARCH BOX as a quick way to find information you need. Contact us to suggest text changes and additions and, if you wish, to receive online listing and credit for that contribution.

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This article series answers most questions about Heating System Boiler Controls on central heating systems to aid in troubleshooting, inspection, diagnosis, and repairs. We explain what a mixing valve, tempering valve, or anti-scald valve is, where and why these valves are installed on hot water systems, and how they work.

#Txt crown tmv how to

In these hot water temperature control articles we explain how to buy, install, adjust and inspect anti-scald equipment to prevent hot water burns. We have no relationship with advertisers, products, or services discussed at this website. InspectAPedia tolerates no conflicts of interest.