4 LF870V-DNRS

Item Number: 0683118
1 1
$8,694.76
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When Will it Ship: Contact for Lead Time
Estimated transit time: 2 to 5 Business Days

Brand - Febco
  • Size: 4 inch
  • Weight: 425.0 lb
  • Lead Free Construction: Yes (less than 0.25% lead)
  • Body Material: Ductile Iron
  • Coating: ArmorTek Epoxy
  • Shutoff Valves: Non-Rising Stem (NRS)
  • Maximum Working Pressure: 175 psi
  • Temperature Range: 33°F - 140°F
  • Installation: Horizontal N-pattern or Vertical up Z-pattern

Description

The 4 inch Lead Free Double Check Valve Backflow Preventer Assembly (LF870V) protects potable water systems from non-health hazard backflow conditions. Its patented ArmorTek epoxy coating on a ductile iron body resists corrosion, ensuring long-term durability. Designed for continuous pressure applications, this in-line serviceable unit allows for easy maintenance without special tools. It is approved for both horizontal N-pattern and vertical up Z-pattern installations, featuring a maximum working pressure of 175 psi and a temperature range of 33°F to 140°F. Item number 0683118.

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Connections & Installation

  • This assembly is designed for installation on potable water supplies.
  • It supports both horizontal N-pattern installations, with standard orientation being inlet flow vertical up and outlet flow vertical down.
  • It also supports vertical up Z-pattern installations.
  • End connections are compliant to ASME B16.1 Class 125 and AWWA Class D Flange standards.
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Additional Details

This 4 inch lead free MasterSeries® LF870V Double Check Valve Backflow Preventer Assembly is specifically designed to protect potable drinking water systems from the backflow of polluted water due to backsiphonage and/or backpressure conditions in non-health hazard (pollutant) applications.

It is suitable for continuous pressure piping applications and at cross-connections identified as non-health hazards.

Features

  • Lead Free construction, with wetted surfaces containing less than 0.25% of lead by weight.
  • ArmorTek® coating technology resists microbial-induced corrosion (MIC) and protects exposed metal substrates.
  • In-line serviceable assembly for easy maintenance.
  • Supports horizontal N-pattern and vertical up Z-pattern installations.
  • No special tools required for servicing.
  • Captured modular spring assembly.
  • Reversible and replaceable discs and field replaceable seats.
  • Ductile iron valve body design.
  • Stainless steel check components.
  • Winterization feature with disc retainers and valve body drain ports.
  • Clapper check assembly.
  • Commonality between 1st and 2nd check components.
  • Captured O-ring design.

Specifications

  • Nominal Size: 4 inch
  • Product Type: Double Check Valve Assembly
  • Valve Body Material: Ductile Iron Grade 65-45-12
  • Coating: ArmorTek Powder Coating
  • Shutoff Valve Type: Domestic Non-Rising Stem (NRS) Resilient Wedge Gate Valve
  • Check Seats Material: Stainless Steel
  • Disc Holder Material: Stainless Steel
  • Elastomer Disc Material: Silicone
  • Spring Material: Stainless Steel
  • Clamp Material: AWWA C606

Performance Data

  • 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

  • Approved by 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 Approved
  • AWWA Standard C510 Compliant
  • NSF Certified to NSF/ANSI 61-G
  • End Connections: Compliant to ASME B16.1 Class 125 & AWWA Class D Flange

FAQs

What is the primary purpose of this backflow preventer assembly?

The primary purpose is to protect potable drinking water systems from contamination by polluted water due to backpressure or backsiphonage, specifically for non-health hazard (pollutant) applications.

What does "Lead Free" construction mean for this product?

"Lead Free" construction means that the wetted surfaces of this product, those that come into contact with consumable water, contain less than 0.25% of lead by weight, complying with low lead installation requirements.

What is ArmorTek® coating and why is it important?

ArmorTek® is a patented three-part advanced epoxy system that coats the iron components of the backflow preventer. It is engineered to reduce microbial-induced corrosion (MIC) and protect exposed metal substrates, enhancing the durability and lifespan of the assembly.

What are the approved installation orientations for this valve?

This valve assembly is approved for both horizontal N-pattern installations and vertical up Z-pattern installations.

What are the main materials used in the construction of this backflow preventer?

The main valve body is made of Ductile Iron Grade 65-45-12 with ArmorTek powder coating. Check seats, disc holders, and springs are stainless steel, while the elastomer discs are silicone.

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