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521506A - Mixcal 3-Way Mixing Valve 3/4" Press-Asse 1017 - Caleffi

Brand: Caleffi
Part #: 521506A
$170.88

List Price: $267.00
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Description / 521506A - Mixcal 3-Way Mixing Valve 3/4" Press-Asse 1017 - Caleffi

Mixcal 3-Way Mixing Valve 3/4" Press-Asse 1017
Caleffi • Hydraulics & Valves
521506AMixcal

Caleffi 521506A mixcal 3-way mixing valve 3/4" press-asse 1017 hydronic valve replacement part

Genuine Caleffi Mixcal™ 3-way thermostatic mixing valve for hydronic systems. Blends hot and cold water supplies to deliver a stable, preset mixed temperature — certified to ASSE 1017 for hot water distribution thermostatic mixing valves.

✅ ASSE Certification

▶ ASSE 1017 — Thermostatic Mixing Valves for hot water distribution systems

🔌 Connection Type

Press — tool-free press-fit connection for copper or stainless press fittings

🔍 What This Part Fixes

✖ Problem Symptoms

  • ✖ Scalding risk from untempered hot water at distribution points
  • ✖ Inconsistent mixed water temperature as supply pressures and temperatures vary
  • ✖ No thermostatic protection at point-of-use or distribution — temperature varies with demand

✓ What This Restores

  • ✓ Stable, preset mixed water temperature regardless of supply pressure/temperature variations
  • ✓ ASSE 1017 certified thermostatic mixing valve
  • ✓ Body-only version available — order unions separately for flexible connection configuration

🔧 Installation Overview

  1. Install with hot supply to H port, cold supply to C port, mixed outlet to M port
  2. Set mixed temperature using the adjustment knob — typical setting 110–120°F for distribution
  3. Install with isolation valves on all three ports for serviceability
  4. Verify mixed outlet temperature with a calibrated thermometer after commissioning

📋 Specifications

DetailValue
Part Number521506A
BrandCaleffi
Product LineMixcalâ„¢
Type3-Way Thermostatic Mixing Valve
CertificationASSE 1017
ApplicationHydronic Hot Water Distribution — Tempering
Pipe Size3/4"
Connection TypePress-fit
CertificationASSE 1017 — Thermostatic Mixing Valves for hot water distribution systems

❓ Common Questions

Q: What is ASSE 1017 certification?

A: ASSE 1017 covers thermostatic mixing valves for hot water distribution systems — valves that blend hot and cold water to deliver a preset mixed temperature at multiple fixtures from a central location. Valves certified to ASSE 1017 meet performance standards for temperature stability and high-temperature shutoff to prevent scalding.

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