10 inch Lead Free Double Check Detector Backflow Preventer
Weight: 1222.0 lb
Body Material: Ductile iron Grade 65-45-12
ArmorTek Coating: Patented 3-part epoxy system for corrosion resistance
Maximum Working Pressure: 175 psi
Temperature Range: 33°F - 140°F
Features OS&Y Resilient Seated Gate Valves
Includes 5/8" x 3/4" GPM Water Meter for bypass
UL Classified, FM Approved, ASSE 1048 Listed
Description
This 10 inch FEBCO MasterSeries LF856 is a lead free double check detector backflow preventer assembly, engineered for protecting potable water supplies from non-health hazard pollutants due to backpressure or backsiphonage. Its robust ductile iron body is coated with ArmorTek, a patented 3-part epoxy system that resists microbial-induced corrosion. Featuring OS&Y resilient seated gate valves, two independent check valves, and a 5/8" x 3/4" GPM bypass meter, it detects unauthorized water usage. Approved for horizontal and vertical-up installations, this assembly is UL Classified, FM Approved, and ASSE 1048 Listed, making it ideal for fire sprinkler and standpipe systems. Maximum working pressure is 175 psi.
Help Me Connect
Installation Orientation
This assembly is approved for both horizontal and vertical up installations.
Applications
Designed for installation on the potable water supply at points of cross-connection.
Protects against backpressure and backsiphonage conditions for non-health hazard (pollutant) applications.
Ideal for fire sprinkler and standpipe systems where detection of unauthorized water use is required.
Suitable for containment at the service line entrance for non-health hazard cross-connections.
The FEBCO MasterSeries® LF856 is a 10 inch lead free double check detector backflow preventer assembly designed to protect potable water supplies from dangerous cross-connections. It is primarily used for non-health hazard applications such as fire sprinkler and standpipe systems, where it also detects unauthorized water usage or potential underground leaks.
This assembly features a ductile iron body with an ArmorTek® coating, a patented three-part advanced epoxy system engineered to reduce microbial-induced corrosion (MIC) and protect exposed metal substrate. It includes two in-line independent check valves, replaceable stainless steel check seats, and OS&Y resilient seated domestic gate valve shutoff valves.
Main Valve Features
In-line serviceable assembly requiring no special tools for servicing
Captured modular spring assembly for easy maintenance
Reversible and replaceable discs and field replaceable seats
Ductile iron valve body design with stainless steel check components
ArmorTek coating technology resists corrosion of internals
Winterization feature with disc retainers and valve body drain ports
Clapper check assembly with commonality between 1st and 2nd check components
Captured O-ring design
Auxiliary Bypass Features
Compact bypass design that remains within the main valve assembly profile
In-line serviceable 3/4 inch check assembly requiring no special tools for servicing
Bypass Meter: 5/8 inch x 3/4 inch GPM Water Meter (ANSI/AWWA C700 Compliant)
Performance Ratings
Maximum Working Pressure: 175 psi (12.1 bar)
Minimum Working Pressure: 10 psi (0.7 bar)
Hydrostatic Test Pressure: 350 psi (24.1 bar)
Hydrostatic Safety Pressure: 700 psi (48.3 bar)
Temperature Range: 33°F - 140°F (0.5°C ~ 60°C) Continuous
Certificates & Approvals
Lead Free: Wetted surface contains less than 0.25% lead by weight
Approved by Foundation for Cross-Connection Control and Hydraulic Research (FCCCHR-USC)
ASSE 1048 Listed
UL Classified (U.S. & Canada)
FM Approved
IAPMO
AWWA Standard C510 Compliant
End Connections: Compliant to ASME B16.1 Class 125 & AWWA Class D Flange
FAQs
What types of cross-connections does the FEBCO LF856 protect against?
This backflow preventer is designed to protect against possible backpressure and backsiphonage conditions for non-health hazard (pollutant) applications, such as irrigation, fire lines, or industrial processing.
What is the primary use of the 10 inch LF856 double check detector assembly?
It is primarily used for the protection of drinking water systems and fire sprinkler systems where local codes mandate protection from non-potable quality water, especially when detection of unauthorized water use is required.
What is ArmorTek coating and why is it important?
ArmorTek is a patented three-part advanced epoxy system applied to the iron components of the backflow preventer. It is engineered to reduce microbial-induced corrosion (MIC) and protect exposed metal substrates, enhancing durability.
What is the maximum operating pressure and temperature range for this assembly?
The maximum working pressure is 175 psi (12.1 bar), and it can operate continuously within a temperature range of 33°F to 140°F (0.5°C to 60°C).
Does this backflow preventer include shutoff valves and a bypass meter?
Yes, it comes with UL Classified/FM Approved OS&Y resilient seated shutoff valves and a 5/8" x 3/4" GPM water meter in the auxiliary bypass line, which detects leaks or unauthorized water usage.
