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Zurn Z843M1-RC Installation Guide

The Zurn Z843M1‑RC is a wall‑mount service sink faucet featuring an 8" vacuum breaker spout. Built from rough chrome‑plated cast brass, it is designed for durability, vandal resistance, and compliance with backflow prevention standards.


Key Installation Requirements:


  • Wall‑mounted installation with adjustable centers (7‑1/4" to 8‑3/4")
  • Supply line pressure: 20–125 PSI
  • Hot and cold water supply connections required
  • Includes atmospheric vacuum breaker certified to UPC, ASSE 1001‑2002, CSA B64‑01
  • 3/4" hose‑threaded outlet with pail hook

Important Notes Before Installing:


  • Always shut off water supply before installation
  • Do not overtighten supply connections to avoid damage
  • Ensure faucet is mounted securely to resist vandalism
  • Verify vacuum breaker certification for backflow prevention
  • Check bubbler stream height and adjust regulator as needed

Basic Installation Overview:


  1. Turn off water supply and relieve pressure
  2. Position faucet on wall with adjustable centers aligned
  3. Secure faucet body using provided mounting hardware
  4. Connect hot and cold supply lines to inlet shanks
  5. Tighten connections and check for leaks
  6. Verify vacuum breaker operation for backflow prevention
  7. Test hose‑threaded outlet and pail hook functionality

Other Related Variants:


  • Z843M1: Standard wall‑mount service sink faucet
  • Z843M1‑CS‑RC: Check stop with rough chrome plate

For complete specifications and installation guidelines, download the official Z843M1‑RC Spec Sheet and the Installation Manual.


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