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Febco 905-352 first check module for Series 860/880 reduced pressure assembly, replacement part for 1-1/4 to 2-inch NPT systems, product view

Febco 905-352 First Check Module for Series 860/880 (1-1/4"–2")

Brand: Febco
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$107.40
$80.55
SKU 905-352

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Replacement first check module designed for Febco Series 860 and 880 reduced pressure zone (RPZ) assemblies. This OEM-compatible module restores reliable first-check operation on 1-1/4" through 2" RPZ sizes and is used where code-compliant protection of potable water is required.

  • Fits Series: Febco 860 and 880 RPZ assemblies (1-1/4"–2").
  • Part Number / SKU: 905-352 (OEM FB.905-352 where referenced by manufacturers).
  • Function: First check module — replaces the first check assembly to restore sealing and flow control.
  • Connection Type: Intended for systems using NPT ANSI/ASME B1.20.1 end connections.
  • Documentation: Downloadable installation, maintenance, relief valve and freeze-protection manuals are available with this part.

This module is specified for health-hazard RPZ applications to protect drinking water from dangerous cross-connections in irrigation, fireline, or industrial processing service. For safe, code-compliant replacement and testing, have the module installed and pressure-tested by a qualified technician. Refer to the included PDFs for step-by-step installation and maintenance guidance.

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Frequently Asked Questions

What sizes does this check module fit?
Fits Febco Series 860/880 reduced pressure assemblies in 1-1/4" through 2" sizes.
Is this module compatible with NPT end connections?
Yes. It is intended for use with NPT ANSI/ASME B1.20.1 end connections on Series 860/880 RPZ assemblies.
What installation and maintenance documents are available?
Installation instructions, maintenance manual, relief valve assembly guide, and freeze-protection instructions are available as downloadable PDFs.
Can I replace this module myself?
Replacement and testing should be completed by a qualified technician to preserve RPZ performance and meet code testing requirements.

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