Lead Free* construction (wetted surface < 0.25% lead)
Approvals: ASSE 1015 Listed, UL Classified, FM Approved, CSA Listed
Description
The Febco 10 inch LF850 MasterSeries Double Check Valve Assembly with NRS gate valves is a lead-free backflow preventer designed for non-health hazard applications. It safeguards potable water systems from backpressure and backsiphonage by preventing pollutants from entering the supply. Key features include a durable ductile iron body with ArmorTek epoxy coating for superior corrosion resistance and flanged end connections. This assembly is ASSE 1015 Listed, UL Classified, FM Approved, and CSA Listed, with a maximum working pressure of 175 psi and a temperature range of 33°F to 140°F. Its in-line serviceable design allows for easy maintenance without special tools. Item number 0124532.
Help Me Connect
Connections
This 10 inch double check valve assembly features flanged end connections compliant with ASME B16.1 Class 125 and AWWA Class D Flange standards.
Designed for installation on the potable water supply at points of cross-connection for non-health hazard (pollutant) applications.
Equipped with Non-Rising Stem (NRS) resilient wedge gate valves compliant with AWWA C509.
The Febco 10 inch LF850 MasterSeries Double Check Valve Assembly with NRS gate valves is designed to protect potable drinking water systems from backpressure and backsiphonage conditions in non-health hazard (pollutant) applications.
This in-line device prevents the backflow of objectionable, non-toxic pollutants into the potable water supply, making it ideal for containment at the service line entrance.
Key Features
Ductile iron valve body design with flanged end connections.
Includes NRS (Non-Rising Stem) resilient wedge gate valves.
Features ArmorTek® coating technology, a patented three-part advanced epoxy system engineered to resist electrochemical and microbial-induced corrosion.
Equipped with two in-line independent stainless steel check components with replaceable seats.
Designed for in-line serviceability without requiring special tools.
Lead Free* construction, with wetted surfaces containing less than 0.25% lead by weight.
Incorporates a winterization feature with disc retainers and valve body drain ports.
Clapper check assembly and captured O-ring design.
Specifications
Dimensions & Weight
Nominal Size: 10 inch
Lay Length (A): 72 5/8 inches (1845 mm)
Weight (NRS with Gate Valves): 1179 lbs (535 kg)
Materials
Main Valve Body: Ductile iron Grade 65-45-12
Coating: ArmorTek powder coating (internal and external)
Temperature Range: 33°F - 140°F (0.5°C ~ 60°C) Continuous
Certificates & Approvals
Approved by the Foundation for Cross-Connection Control and Hydraulic Research at The University of Southern California (FCCCHR-USC)
ASSE 1015 Listed
UL Classified (U.S. & Canada)
FM Approved
IAPMO
CSA Listed
AWWA Standard C510 Compliant
End Connections: Compliant to ASME B16.1 Class 125 & AWWA Class D Flange
Certified to NSF/ANSI 61-G
FAQs
What is the primary purpose of the Febco LF850 Double Check Valve Assembly?
The LF850 is designed to protect potable drinking water systems from backpressure and backsiphonage conditions in non-health hazard (pollutant) applications. It prevents objectionable, non-toxic pollutants from entering the water supply.
What type of shutoff valves are included with this 10 inch assembly?
This assembly is fitted with Non-Rising Stem (NRS) resilient wedge gate valves, compliant with AWWA C509 standards.
What is ArmorTek coating and what are its benefits?
ArmorTek is a patented three-part advanced epoxy system engineered to reduce microbial-induced corrosion (MIC) and protect exposed metal substrates. It provides integrated protection against electrochemical corrosion.
What are the key material components of this backflow preventer?
The main valve body is ductile iron Grade 65-45-12, while the check components, check seats, disc holders, and springs are made of stainless steel. The elastomer discs are silicone.
What is the maximum operating pressure and temperature range for the LF850?
The maximum working pressure for this assembly is 175 psi (12.1 bar). It can operate continuously within a temperature range of 33°F to 140°F (0.5°C ~ 60°C).
