The Maxim M200N 6 inch lead-free double check valve backflow preventer assembly prevents the reverse flow of non-potable water into the potable water supply. Designed for non-health hazard cross-connections such as high flow fire systems, it features a durable 304 stainless steel body, patented Tri-Link check valves, and non-rising stem (NRS) resilient seated gate valves. This compact assembly offers easy serviceability with a single access sleeve and operates up to 175 PSI. It is approved for horizontal, vertical, or N pattern installations and is ASSE 1015, AWWA C510-97, and NSF/ANSI 61-G certified. Item number 0191015.
Help Me Connect
This Maxim™ M200-NRS backflow preventer assembly features grooved end connections to facilitate integral pipeline adjustment and simplified installation into your existing system.
It is designed for versatile installation and can be configured for horizontal, vertical, or N pattern setups to meet diverse site requirements.
The Maxim™ 6 inch lead free double check valve backflow preventer assembly is designed to prevent the reverse flow of fire protection substances and non-potable water into the potable water supply due to backsiphonage or backpressure.
This assembly is ideal for protection at cross-connections identified as non-health hazards, such as on high flow fire systems and other service line contaminants.
Design & Components
Features a compact modular design with a single access sleeve for easy maintenance.
Consists of a stainless steel body, two Tri-Link check valves, two non-rising stem resilient seated gate valves, and four test cocks.
Groove fittings allow for integral pipeline adjustment.
Patented Tri-Link Checks provide the lowest pressure loss.
Replaceable check disc rubber for extended service life.
Installation & Use
Approved for horizontal, vertical, or N pattern installations.
Pins & Fasteners Material: 300 Series Stainless Steel
Spring Material: Stainless Steel
Maximum Working Pressure: 175 PSI (12.06 bar)
Temperature Range: 33°F - 110°F (0.5°C – 43°C)
Lead Content: Wetted surface contains less than 0.25% lead by weight
Certificates & Approvals
Approved by: Foundation for Cross-Connection Control and Hydraulic Research at The University of Southern California (FCCCHR-USC)
Standard: AWWA C510-97
Certification: ASSE 1015
Certification: CSA B64.5
Certification: NSF/ANSI 61-G
FAQs
What is the primary purpose of this backflow preventer?
This backflow preventer is designed to prevent the reverse flow of non-potable water, such as fire protection substances, from entering the potable water supply due to backsiphonage or backpressure. It is suitable for non-health hazard applications.
What type of shutoff valves does this assembly use?
This Maxim M200N assembly is equipped with non-rising stem (NRS) resilient seated gate valves. These valves are designed for reliable operation and durability.
Can this backflow preventer be installed in any orientation?
Yes, the assembly is approved for versatile installation in horizontal, vertical, or N pattern configurations, allowing flexibility to fit various piping layouts. Always follow the flow arrow direction during installation.
What material is the housing made from?
The housing and sleeve of this backflow preventer assembly are constructed from 304 (Schedule 40) stainless steel, providing excellent durability and corrosion resistance.
Is this product considered lead-free?
Yes, the wetted surface of this product that comes into contact with consumable water contains less than 0.25% of lead by weight, meeting lead-free requirements.
