Approximately 70% lighter than traditional designs
Torsion spring check modules for ease of serviceability
Lowest pressure loss via Link Check Modules
Grooved gear operated butterfly shutoff valves with tamper switch
Description
This Maxim™ 4 inch lead-free reduced pressure zone backflow preventer assembly protects potable water supplies from fire protection substances and non-potable water contamination due to backsiphonage and backpressure. Its compact, lightweight 304 stainless steel design is 70% lighter than traditional models, ideal for installations with limited space. Key features include torsion spring link check modules for low pressure loss and easy servicing, grooved gear butterfly shutoff valves with tamper switches, and a bottom-mounted stainless steel relief valve. Designed for horizontal Z pattern installation in continuous pressure piping applications, it ensures compliance with national plumbing codes. Item number 0191108.
Help Me Connect
Installation Orientation
This assembly is approved for horizontal Z pattern installation. Ensure the backflow assembly is installed in accordance with the direction of the flow arrow for proper operation.
Connections
Features groove couplings for easy installation and alignment with existing piping.
Equipped with grooved gear operated butterfly valves.
This Maxim™ 4 inch lead free reduced pressure zone backflow preventer assembly is designed to prevent the reverse flow of fire protection substances and non-potable water into the potable water supply. It protects against backsiphonage and backpressure in accordance with national plumbing codes and water authority requirements.
Primary Use
Designed for protection in continuous pressure piping applications and at cross-connections identified as health hazards.
Prevents reverse flow of fire protection substances and non-potable water into the potable water supply.
Approved for horizontal Z pattern installation, ensuring proper alignment with the direction of flow arrow.
Construction & Features
Features a 304 (Schedule 40) stainless steel housing and sleeve.
Offers an extremely compact design, allowing for smaller enclosures.
Approximately 70% lighter than traditional designs for easier handling and installation.
Equipped with torsion spring check modules for simplified serviceability.
Link check modules are engineered to provide the lowest pressure loss.
Includes groove couplings for easy installation and pipe alignment.
Features drip tight shutoff valves with a tamper switch.
Contains replaceable check disc rubber.
Equipped with a bottom mounted stainless steel relief valve.
NOTICE: The information contained herein is not intended to replace the full product installation and safety information available or the experience of a trained product installer. You are required to thoroughly read all installation instructions and product safety information before beginning the installation of this product.
Specifications
Assembly Type: Reduced Pressure Zone Backflow Preventer
Model Series: Maxim™ M400Z-BFG
Nominal Size: 4 inch
Housing and Sleeve Material: 304 (Schedule 40) Stainless Steel
Shutoff Valves: Grooved Gear Operated Butterfly Valves with Tamper Switch
Check Modules: Link Check Modules, Torsion Spring
Installation Orientation: Horizontal Z Pattern
Relief Valve: Bottom Mounted Stainless Steel
Check Disc Material: Replaceable Rubber
Connection Type: Groove Couplings
FAQs
What is the primary purpose of this backflow preventer assembly?
This Maxim™ 4 inch reduced pressure zone backflow preventer assembly is designed to prevent the reverse flow of fire protection substances and non-potable water into the potable water supply, protecting against backsiphonage and backpressure.
What are the key materials used in its construction?
The housing and sleeve are constructed from durable 304 (Schedule 40) stainless steel, offering excellent corrosion resistance. It also features a bottom mounted stainless steel relief valve and replaceable check disc rubber.
Can this backflow preventer be installed in any orientation?
No, this assembly is specifically approved for horizontal Z pattern installation. It is critical to install it in accordance with the direction of the flow arrow for proper functionality.
What makes this backflow preventer easy to service and install?
It features torsion spring check modules for ease of serviceability and groove couplings for easy installation and pipe alignment. Its extremely compact design and 70% lighter weight compared to traditional models also simplify handling.
Is this assembly suitable for continuous pressure applications?
Yes, this Maxim™ backflow preventer is ideal for protection in continuous pressure piping applications and at cross-connections identified as health hazards.
