3/4" Union Sweat Mixing Valve (Lead-Free), 85-175F


Brand: Taco

Mfr Part#: 5003-C3

UPC#: 687752787153

Availability: In Stock
Usually ships: within 1 business day
Qty Price
$82.95 / each
  • Description
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  • FAQs (1)

Taco 5003-C3 Mixing Valve is a dual-purpose mixing or diverting valve that delivers fail-safe security and superior performance. The ASSE 1017-approved valve provides shut-off reliability on either a hot or cold water supply failure. Its high flow and low headloss make the Taco 5003-C3 mixing valve ideal for applications such as domestic hot water, radiant heat applications, installations with large variations in flow rate and supply conditions, and installations that require precise control of water temperature. Mixing valve's unique design ensures a stable and controlled mixed water temperature throughout the extended 85-176°F range.



  • Body: Forged Brass (≤.25% Lead Brass);
  • Internal Components: ≤.25% Lead Brass, Noryl GFN2;
  • Seals: Viton;
  • Spring: Stainless Steel;
  • Piston: Polysulfone;
  • Gaskets: EPDM.


  • Lead-Free Compliant (≤.25% Lead);
  • Ideal for Domestic Water Distribution Points;
  • Suitable for use in Potable Water;
  • Delivers Stable Mixed Water Temperature;
  • Tamper-Resistance Cap;
  • Low Headloss;
  • Outlet Temperature Strip.

Technical Specifications:

  • Connections: 3/4" Union Sweat;
  • Heat Capacity: 2.3 Cv;
  • Maximum Flow: 20 GPM (76 L/Min);
  • Minimum Flow: 1 GPM (3.8 L/Min);
  • Hot Supply Temperature: 120-180°F (49-82°C);
  • Cold Supply Temperature: 39-80°F (5-27°C);
  • Maximum Inlet Pressure: 230 psi (15.85 Bar);
  • Maximum Variation in Supply Pressure: 20%;
  • Minimum Temperature Differential Between Hot Supply and Mixed: 27°F (15°C);
  • Outlet Temperature Range: 85-175°F (29-80°C);
  • Factory Set to: 115-120°F (41-45°C);
  • Accuracy of Outlet Temperature: ± 3°F;
  • Approvals: ASSE 1017, CSAB125.3, cUPC.
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Is this the same as 5003-C2?
Read 1 answer
5003-C3 is a lead-free version of the 5003-C2.
Answered on 10/8/2014 by PexUniverse Customer Service
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