4 LF886V-OSY-CFM-FS

Item Number: F683227
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$16,122.38
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When Will it Ship: Contact for Lead Time
Estimated transit time: 2 to 5 Business Days

Brand - Febco
  • 4 inch Reduced Pressure Zone Detector Assembly
  • Weight: 342.0 lb
  • Lead Free construction (less than 0.25% lead)
  • Ductile iron body with ArmorTek® epoxy coating
  • Stainless steel relief valve seat and check components
  • Includes SentryPlus Alert® flood sensor
  • 5/8" x 3/4" CFM water meter for bypass line
  • Max. Working Pressure: 175 psi
  • Temperature Range: 33°F - 140°F

Description

This 4 inch FEBCO MasterSeries LF886V Reduced Pressure Zone Detector Backflow Preventer Assembly is designed for high hazard/toxic applications, protecting potable water systems from backpressure and backsiphonage. It features lead-free ductile iron construction with ArmorTek® corrosion-resistant epoxy coating and stainless steel internal components for durability. An integrated SentryPlus Alert® flood sensor detects relief valve discharges, and an OSY shutoff bypass includes a CFM water meter to monitor leaks. This UL Classified and FM Approved assembly operates within a 33°F to 140°F temperature range and a maximum working pressure of 175 psi. Item number F683227.

Help Me Connect

Flood Sensor Activation

  • The integrated flood sensor requires an add-on connection kit for activation. Without this kit, the sensor operates as a passive component and cannot communicate with other devices.
  • Connection kit options include a BMS (Building Management System) kit, a cellular communication kit, or the Sensor Control Monitor.
  • The Sensor Control Monitor allows integration with BAS (Building Automation Systems) via RS-485 Modbus or through the Nexa® platform using Wi-Fi connectivity.

End Connections

  • This assembly features flanges compliant to ASME B16.1 Class 125 and AWWA Class D Flange standards.
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Additional Details

This 4 inch MasterSeries® LF886V Reduced Pressure Zone Detector Backflow Preventer Assembly is designed to protect potable drinking water systems from backpressure and backsiphonage in high hazard/toxic applications. It includes OSY shutoff valves, a CFM water meter, and a flood sensor for enhanced monitoring.

Advanced Protection & Durability

  • The assembly's main valve body and relief valve body are constructed from ductile iron Grade 65-45-12.
  • Features a patented ArmorTek® three-part advanced epoxy coating system, applied to internal and external surfaces, engineered to resist microbial-induced corrosion (MIC) and protect exposed metal substrates.
  • Internal components include stainless steel relief valve seat and stainless steel check components for maximum performance and durability.
  • Utilizes two (2) independently acting approved clapper style check modules with replaceable seats and disc rubbers, designed for inline servicing without special tools.
  • Fitted with UL Classified and FM Approved OS&Y resilient seated shutoff valves and four properly located resilient seated test cocks.
  • The assembly features Lead Free construction, with wetted surfaces containing less than 0.25% lead by weight, complying with low lead installation requirements.

Integrated Flood Sensor

  • Equipped with a flood sensor with SentryPlus Alert® technology to detect excessive water discharges from the relief valve.
  • The sensor relays a signal to trigger multi-channel alerts (call, email, text) to notify personnel of potential flooding.
  • An add-on connection kit is required to activate the flood sensor. Without this kit, the sensor is a passive component and does not communicate with other devices.
  • Use of the flood sensor does not replace the need to comply with all required instructions, codes, and regulations related to installation, operation, and maintenance of this product, including the need to provide proper drainage in the event of a discharge.

Bypass Assembly with Water Meter

  • A bypass line includes a 5/8" x 3/4" CFM (cubic feet per minute) water meter (AWWA C700 Compliant) designed to detect potential underground water leaks or unauthorized water usage.

Specifications

General

  • Product Type: Reduced Pressure Zone Detector Backflow Preventer Assembly
  • Size: 4 inch
  • Model: LF886V
  • Operating Pattern: N-Pattern (Standard)
  • Lead Content: Less than 0.25% by weight (Wetted Surface)

Materials

  • Main Valve Body: Ductile iron Grade 65-45-12
  • Relief Valve Body: Ductile iron Grade 65-45-12
  • Coating: ArmorTek powder coating (internal and external)
  • Shutoff Valves: OSY resilient wedge gate valve AWWA C515 (UL Classified and FM Approved)
  • Check Seats: Stainless steel
  • Relief Valve Seat: Stainless steel
  • Disc Holder: Stainless steel
  • Elastomer Disc: Silicone
  • Spring: Stainless steel
  • Clamp: AWWA C606
  • Bypass Meter: 5/8" x 3/4" Water Meter (AWWA C700 Compliant)

Performance

  • Max. Working Pressure: 175 psi (12.1 bar)
  • Min. Working Pressure: 20 psi (1.4 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

  • Foundation for Cross-Connection Control and Hydraulic Research (FCCCHR-USC)
  • ASSE 1047
  • UL Classified (US & Canada)
  • FM Approved
  • IAPMO/CUPC
  • AWWA Standard C511 Compliant
  • CSA B64.4
  • End Connections: Compliant to ASME B16.1 Class 125 & AWWA Class D Flange

Dimensions (N-Pattern, Approximate)

  • Overall Length (A): 31 1/8 inches
  • Overall Width (D): 27 3/4 inches
  • Overall Height (G): 31 inches
  • Approximate Weight (OSY): 342 lbs

FAQs

What is the primary purpose of this backflow preventer assembly?

This 4 inch LF886V Reduced Pressure Zone Detector Assembly is designed to protect potable drinking water systems from contamination due to backpressure and backsiphonage in high hazard/toxic applications.

Is this backflow preventer lead-free?

Yes, this assembly features Lead Free construction. The wetted surfaces of the product contain less than 0.25% lead by weight, complying with current low lead installation requirements.

How does the flood sensor function, and what is required to activate it?

The integrated SentryPlus Alert® flood sensor detects excessive water discharges from the relief valve. To activate its alert capabilities (call, email, text), an add-on connection kit (such as BMS, cellular, or Sensor Control Monitor) is required.

What type of coating is used for corrosion resistance on this assembly?

The ductile iron body components are coated with ArmorTek®, a patented three-part advanced epoxy system. This coating is engineered to resist both microbial-induced corrosion (MIC) and protect exposed metal substrates, enhancing durability.

What are the key certifications and approvals for this backflow preventer?

This FEBCO LF886V assembly is UL Classified, FM Approved, ASSE 1047 compliant, IAPMO/CUPC listed, and meets AWWA Standard C511. It is also approved by FCCCHR-USC and CSA B64.4.

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