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304847A - Flowshield Duc Dual Check Backflow Asse 1024 1/2" Pex Crimp Dual Union - Caleffi

Brand: Caleffi
Part #: 304847A
$61.70

List Price: $96.40
🚚 Factory Ordered This item is ordered straight from the factory just for you! We'll ship it as soon as it reaches our distribution center.
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Brand New Part
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Description / 304847A - Flowshield Duc Dual Check Backflow Asse 1024 1/2" Pex Crimp Dual Union - Caleffi

Dual Check Backflow Asse 1024 1/2" Pex Crimp Dual Union
Caleffi • Hydraulics & Valves
304847ABackflow

Caleffi 304847A dual check backflow asse 1024 1/2" pex crimp dual union hydronic valve replacement part

Genuine Caleffi backflow preventer for plumbing and hydronic cross-connection protection. Prevents contaminated water from reversing into the clean water supply — certified to ASSE 1012 (atmospheric vent type) or ASSE 1013 (RPZ type) depending on model.

🔌 Connection Type

PEX — compatible with PEX or PEX-AL-PEX tubing using expansion or crimp fittings

🔍 What This Part Fixes

✖ Problem Symptoms

  • ✖ Cross-connection risk between hydronic system and domestic water supply
  • ✖ Code compliance requiring backflow prevention at domestic water connection to hydronic system

✓ What This Restores

  • ✓ Prevents backflow of contaminated hydronic fluid into the clean domestic water supply
  • ✓ ASSE certified — meets code requirements for cross-connection protection
  • ✓ Serviceable body allows cartridge replacement without full valve removal (select models)

🔧 Installation Overview

  1. Install in the supply line between the domestic water supply and the hydronic system
  2. Flow direction must follow body arrow — supply side to system side
  3. Install with isolation valves on both sides for serviceability
  4. Commission by verifying no backflow when downstream system pressure is relieved

📋 Specifications

DetailValue
Part Number304847A
BrandCaleffi
TypeBackflow Preventer
CertificationASSE 1012 / ASSE 1013 — per model
ApplicationCross-Connection Protection — Hydronic & Plumbing
Pipe Size1024 1/2"
Connection TypePEX Crimp
UnionDual union

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