This 10 inch Maxim Reduced Pressure Zone Backflow Preventer Assembly with NRS Shutoff Valves is designed to safeguard potable water supplies from backflow, backpressure, and backsiphonage. Featuring a durable 304 stainless steel housing and sleeve, it is 70 percent lighter and more compact than traditional models, allowing for smaller enclosures. Link check modules with torsion springs offer easy serviceability and minimal pressure loss. Ideal for continuous pressure piping and health hazard cross-connections, this assembly installs horizontally in an N pattern. Item number 0191101.
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Installation Orientation
This backflow preventer assembly is approved for horizontal N pattern installation. Ensure it is installed strictly in accordance with the direction of the flow arrow.
Physical Connections
The assembly utilizes groove couplings for straightforward installation and efficient pipe alignment with existing piping.
Clearance & Protection
Ensure adequate clearance around the valve for inspection, testing, and servicing. A minimum of 12 inches of clearance is required between the lower portion of the assembly and the floor or grade.
The valve must be protected from freezing.
Accommodate normal discharge and nuisance spitting by using an Ames air gap fitting and a fabricated indirect waste line, ensuring floor drains of the same size are provided for excessive discharge.
This Maxim 10 inch lead-free reduced pressure zone backflow preventer assembly is designed to prevent the reverse flow of fire protection substances and water of non-potable quality into the potable water supply. It safeguards against backsiphonage and backpressure in accordance with national plumbing codes and water authority requirements, making it ideal for continuous pressure piping applications and cross-connections identified as health hazards.
Construction & Components
Features a 304 (Schedule 40) stainless steel housing and sleeve for durability.
Includes torsion spring check modules for ease of serviceability and lowest pressure loss.
Equipped with resilient seated gate valves with non-rising stem (NRS Shutoff Valves) that provide drip-tight shutoff.
Contains a bottom-mounted stainless steel relief valve for reliable operation.
Check Modules: Link Check Modules (Torsion Spring)
Relief Valve: Bottom Mounted Stainless Steel
Installation Pattern: Horizontal N Pattern
Weight Reduction: 70% lighter than traditional designs
Check Disc: Replaceable Rubber
FAQs
What is the primary function of this Maxim backflow preventer?
This Maxim 10 inch Reduced Pressure Zone (RPZ) backflow preventer assembly is designed to prevent non-potable water and fire protection substances from entering the potable water supply due to backsiphonage or backpressure.
What type of shutoff valves are included with this assembly?
This assembly is equipped with NRS (Non-Rising Stem) shutoff valves. These are resilient seated gate valves that provide a drip-tight shutoff.
What material is used for the housing and sleeve?
The housing and sleeve of this backflow preventer assembly are constructed from durable 304 (Schedule 40) stainless steel, offering robust protection and longevity.
How does this backflow preventer assembly offer installation advantages?
It features an extremely compact design and is approximately 70 percent lighter than traditional models, enabling the use of smaller enclosures and easier handling. Groove couplings also facilitate simpler installation and pipe alignment.
Are there specific installation pattern requirements for this backflow preventer?
Yes, this assembly is approved for horizontal N pattern installation. It is crucial to ensure the backflow assembly is installed strictly in accordance with the direction of the flow arrow for proper operation.
