Symmons Mixing & Tempering Valves
Symmons 7-225-CK-MS Maxline High Flow Thermostatic Mixing Valve with Check Stops
Symmons Mixing & Tempering Valves: Decades of Scald-Protection Leadership
When it comes to mixing and tempering valves, few names carry the weight of Symmons Industries. Founded in 1939 when Paul Symmons invented the first anti-scald, pressure-balancing valve, the brand has spent more than eight decades refining the science of safe water temperature control. Today, that legacy shows up most clearly in their mixing and tempering valve lineup — a category where precision, durability, and code compliance are non-negotiable.
The TempControl® Master Mixing Valve Series
For safe, consistent water temperatures in commercial buildings, Symmons' TempControl® Master Mixing Valves are the starting point, with digital and thermostatic models available for every building size and need. What sets TempControl apart is the quality of its construction: every TempControl valve starts as a heavy semi-red brass casting, then it's precision-machined and fitted with bronze and stainless-steel internal components for decades of flawless operation. TempControl outlet sizes range from 1/2" all the way up to 2", making the series adaptable to everything from small commercial restrooms to large institutional facilities.
TempControl valves are certified to ASSE 1017 and CSA standard B125.3, and compliant with NSF/ANSI 372. All TempControl valve bodies are cast, machined, assembled, and tested in the USA. For facilities looking to modernize, all TempControl thermostatic valves are digitally upgrade-ready — just swap out the cartridge — making a full transition to smart water management straightforward and cost-effective.
The MaxLine® Point-of-Use Thermostatic Mixing Valve
Symmons offers the MaxLine valves, which have been the go-to TMV for decades. Designed for point-of-use applications — particularly at bathroom sinks and fixtures in commercial, healthcare, and institutional settings — the MaxLine is dual-certified to ASSE 1070/1017 standards. The MaxLine TMV valve has been improved to function at a lower flow range, with a smaller footprint, fewer parts, and a durable brass body.
Safety features go beyond simple temperature blending: these valves feature a locking vandal-resistant temperature adjustment cap, which helps prevent unauthorized people from adjusting temperatures beyond safe ranges. MaxLine valves are a reliable, durable option built using quality components that will last, even in the most intense commercial settings.
Why Material Quality Matters
Symmons approaches valve construction with a materials-first philosophy. They use semi-red brass for its lower zinc content to resist dezincification, resulting in a longer-lasting product. This attention to metallurgy is what separates a valve that lasts years from one that lasts decades — a distinction that matters enormously in high-demand environments like hospitals, hotels, schools, and multifamily housing.
Built for Commercial Confidence
Symmons is renowned for its wide range of durable, reliable commercial-grade plumbing products for educational, healthcare, hospitality, industrial, and multifamily segments. Whether you're a contractor specifying valves for a new build or a facility manager upgrading an aging domestic hot water system, Symmons mixing and tempering valves offer a proven path to code-compliant, scald-safe water delivery. Browse the full Mixing & Tempering Valves category or explore the complete Symmons brand catalog to find the right valve for your application.