10 LF870V-DOSY DC
Item Number: 0683115Brand - Febco
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- Size: 10 inch
- Weight: 1565.0 lb
- Lead Free: Wetted surface contains less than 0.25% lead
- Body Material: Ductile Iron Grade 65-45-12
- Coating: ArmorTek epoxy powder coating for corrosion resistance
- Max Working Pressure: 175 PSI
- Temperature Range: 33°F - 140°F
- Shutoff Valves: OS&Y resilient seated gate valves
- Certifications: ASSE 1015, UL, FM, IAPMO, AWWA C510, NSF/ANSI 61-G
Description
Description
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End Connections
This 10 inch backflow preventer assembly features flanged end connections. These connections are compliant to ASME B16.1 Class 125 and AWWA Class D Flange standards, ensuring compatibility with standard piping systems.

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Additional Details
This 10 inch Lead Free Double Check Valve Backflow Preventer Assembly, FEBCO MasterSeries LF870V, is specifically designed to protect potable drinking water systems from possible backpressure and backsiphonage conditions in non-health hazard (pollutant) applications. It prevents the backflow of polluted water from entering the potable water supply, as mandated by Local Governing Water Utility Code.
Features
- In-line serviceable assembly for easy maintenance
- Approved for Horizontal N-pattern and Vertical up Z-pattern installations
- No special tools required for servicing
- Features two independently acting clapper style check modules with replaceable seats and disc rubbers
- Captured modular spring assembly
- Reversible and replaceable discs
- Field replaceable seats
- Ductile iron valve body design
- Stainless steel check components
- ArmorTek coating technology to resist corrosion of internals
- Winterization feature with disc retainers and valve body drain ports
- Clapper check assembly
- Commonality between 1st and 2nd check components
- Captured O-ring design
Construction & Materials
- Main Valve Body: Ductile iron Grade 65-45-12 with ArmorTek powder coating
- Shutoff Valves: OSY resilient wedge gate valves (UL Classified/FM Approved), designed for durability and reliable sealing
- Check Seats: Stainless steel
- Disc Holder: Stainless steel
- Elastomer Disc: Silicone
- Spring: Stainless steel
- Clamp: AWWA C606
- Wetted surface contains less than 0.25% of lead by weight, meeting Lead Free requirements
Coating Technology
The iron components of this backflow preventer are coated with ArmorTek®, a patented three-part advanced epoxy system. This technology is engineered to reduce microbial-induced corrosion (MIC) and protect exposed metal substrate, ensuring extended product lifespan and integrity.
Specifications
- Product Type: Double Check Valve Backflow Preventer Assembly
- Model: FEBCO MasterSeries LF870V
- Nominal Size: 10 inch
- Installation Orientation: Horizontal N-pattern, Vertical up Z-pattern
- Main Valve Body Material: Ductile iron Grade 65-45-12
- Coating: ArmorTek powder coating (internal and external surfaces)
- Shutoff Valves: OSY resilient wedge gate valves, Resilient Seated
- Check Modules: Two (2) independent clapper style check modules
- Check Seats Material: Stainless steel
- Disc Holder Material: Stainless steel
- Elastomer Disc Material: Silicone
- Spring Material: Stainless steel
- Clamp Material: AWWA C606
- Test Cocks: Four (4) properly located resilient seated test cocks
- Lead Content: Wetted surface contains less than 0.25% of lead by weight
Pressure & Temperature Ratings
- Max. Working Pressure: 175 psi (12.1 bar)
- Min. 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
- 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
- AWWA Standard C510 Compliant
- NSF Certified to NSF/ANSI 61-G
- End Connections: Compliant to ASME B16.1 Class 125 & AWWA Class D Flange