The Watts LF007-LF 3 is a 3" lead-free double check valve assembly with NPT connections, approved for low health hazard protection. It features a cast iron body and a rubber seat. Rated to 175 psi. This model is certified lead-free for potable-water installations.
This 3 inch lead free double check valve backflow preventer assembly prevents the backflow of contaminated water into the potable water supply. It is ideal at referenced cross-connections identified as non-health hazard applications. The maximum working pressure is 175 psi (12.06 bar). This assembly without shutoff valves consists of an epoxy coated cast iron body, NPT end connections, top mounted test cocks, two in-line independent positive seating check modules, captured springs, and replaceable check discs and seats. The coating on this backflow assembly uses ArmorTek®, a patented 3-part advanced epoxy coating system designed to limit both microbial induced (MIC) and exposed metal substrate corrosion.
Features
- Utilizes advanced ArmorTek coating technology to resist corrosion of internals
- Cast iron body construction with patented 3-part advanced epoxy coating system designed to limit both microbial induced (MIC) and exposed metal substrate corrosion
- No special tools required for servicing
- Compact space saving design
- Includes: Test Cocks
Common Questions
- What hazard level is this Double Check approved for?
- It is rated for low health hazard (non-toxic, "pollutant") cross-connections only. Where the substance downstream could be a health hazard, codes require a reduced pressure zone (RPZ) assembly instead. The assembly is listed to ASSE 1015.
- Is this model legal for potable water?
- Yes. It is certified lead-free to NSF/ANSI 372, which is what state plumbing codes require for any device in a drinking-water line.
- Does this assembly have to be tested every year?
- Yes. This is a field-testable assembly with 4 test cocks. Most water authorities require it to be tested and certified by a licensed backflow tester at installation and annually thereafter. It carries USC FCCCHR approval, which many jurisdictions accept as their sole approval list.
- Does this ship with inlet and outlet shutoff valves?
- No. This is the "less valves" (LF) configuration — the assembly ships without inlet and outlet shutoffs. Most jurisdictions require approved shutoffs on both sides, so order them separately or choose a QT, NRS, OSY or BFG variant of this model.
- Is this listed for fire protection service?
- Yes — it is UL Classified, the listings normally required for a backflow device on a fire sprinkler supply.
Specifications
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Type: Double Check
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Size: 3"
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Inlet Size: 3"
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Outlet Size: 3"
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Connection: NPT
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Body Material: Cast Iron
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Seat / Seal Material: Rubber
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Max Pressure (psi): 175
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Application: Domestic Water
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Backflow Protection: Backpressure
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Operation: Continuous
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Country of Origin: United States
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Warranty: 1 Year Limited
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MPN: LF007-LF 3
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Certifications: ASSE-1015, CSA-B64, UL, USC, IAPMO
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Lead-Free: Yes
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Assembly Type: Double Check
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Hazard Protection Level: Low Health Hazard
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ASSE Standard: ASSE 1015
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USC FCCCHR Approved: Yes
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Fire Protection Listing: UL Classified
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Field Testable: Yes
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Number of Test Cocks: 4
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Shutoff Valves: None
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Flood Sensor (SentryPlus Alert): No
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Strainer Included: No
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Air Gap Fitting Included: No
