• Mixing Safety & Performance

    We are the leader in Water
    Temperature Control Valves
    View Products
  • Mixing Safety & Performance

    We are the leader in Water
    Temperature Control Valves
    View Products
  • Mixing Safety & Performance

    We are the leader in Water
    Temperature Control Valves
    View Products
  • Mixing Safety & Performance

    We are the leader in Water
    Temperature Control Valves
    Products
  • Mixing Safety & Performance

    We are the leader in Water Temperature Control Valves
    Products

At Leonard Valve Company, our passion is to provide safe tempered water for our customers and their applications.

Since delivering our first thermostatic mixing valve over 100 years ago, we have focused exclusively on designing and manufacturing the highest quality water temperature control valves in America. At Leonard Valve Company, craftsmanship isn't a lost art – it's something we do every day.

Product Spotlight

Proton Electronic Mixing Valve

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Made in America Since 1911

Our Production Team is committed to manufacturing the finest water temperature control valves in the industry. Today we supply high/low master mixers, complete water tempering systems, emergency mixing valves, and shower valves, along with a myriad of other valve products to meet the stringent demands of today's commercial buildings.

OUR HISTORY