1 1/2 LF07S

Item Number: 0061943
1 1
$1,183.50
Special Order
When Will it Ship: Contact for Lead Time
Estimated transit time: 2 to 5 Business Days

Brand - Watts
  • Size: 1 1/2 inch
  • Weight: 23.6 lb
  • Body Material: Bronze
  • Disc Material: Silicone
  • Maximum Operating Pressure: 175 PSI
  • Temperature Range: 33°F to 180°F
  • Certified to ANSI/ASSE 1024
  • UL, cULus, CSA B64.4, and NSF Approved
  • Install Horizontally or Vertically

Description

The Watts 1 1/2 inch LF07S Dual Check Backflow Preventer is engineered for residential fire sprinkler systems. This device safeguards potable water supplies by preventing the reverse flow of polluted water from the sprinkler system. Constructed with a durable bronze body, silicone seat disc, and stainless steel springs, it ensures reliable long-term performance. It features a low pressure drop design and is certified to UL, cULus, CSA B64.4, ASSE 1024, and NSF standards. Suitable for both horizontal and vertical installations, this backflow preventer offers easy maintenance and a maximum operating pressure of 175 PSI.

Help Me Connect

Connecting Your Watts LF07S Backflow Preventer

The Watts 1 1/2 inch LF07S model is supplied with National Pipe Thread Female (NPT) union inlet and female NPT outlet connections. It is designed to connect to male NPT threaded piping systems in accordance with National Pipe Thread Taper ANSI B1.20.1 standards.

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Additional Details

The Watts 1 1/2 inch LF07S Residential Fire Sprinkler Dual Check Backflow Preventer is designed to prevent the reverse flow of polluted water from residential fire sprinkler systems from entering into the potable water supply. This device is suitable for both horizontal and vertical installations.

Construction & Features

  • Features a durable bronze body for longevity.
  • Equipped with a silicone seat disc and union seals for reliable sealing.
  • Incorporates captured stainless steel springs.
  • Designed for low pressure drop, maintaining system efficiency.
  • Offers ease of maintenance and serviceability.

Specifications

  • Product Type: Dual Check Backflow Preventer
  • Series: LF07S
  • Nominal Size: 1 1/2 inch
  • Body Material: Bronze
  • Disc Material: Silicone
  • O-Rings: EPDM or Buna N
  • Check Modules: Engineered Composite
  • Springs: Stainless Steel
  • Minimum Working Pressure: 10 PSI (0.69 bar)
  • Maximum Operating Pressure: 175 PSI (12.06 bar)
  • Hydrostatic Test Pressure: 700 PSI (48.3 bar)
  • Temperature Range: 33°F to 180°F (0.5°C to 82°C)

Connections

  • Connection Type: National Pipe Thread Taper (NPT) ANSI B1.20.1 Female Union Inlet & Female NPT Outlet

Certificates & Approvals

  • UL Listed: Sizes 1", 1 1/4", 1 1/2" & 2"
  • cULus Listed: Sizes 1", 1 1/4", 1 1/2" & 2"
  • CSA B64.4: Sizes 1", 1 1/4", 1 1/2" & 2"
  • ASSE 1024: All Sizes Applicable
  • NSF: All Sizes Applicable

FAQs

What is the primary function of the Watts 1 1/2 inch LF07S?

The primary function of this device is to prevent polluted water from a residential fire sprinkler system from flowing back into the potable (drinkable) water supply.

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

It features a durable bronze body, a silicone seat disc, EPDM or Buna N O-rings, engineered composite check modules, and stainless steel springs for reliability.

What are the maximum operating pressure and temperature limits for the 1 1/2 inch LF07S?

This model has a maximum operating pressure of 175 PSI (12.06 bar) and can operate within a temperature range of 33°F to 180°F (0.5°C to 82°C).

Can this backflow preventer be installed in any orientation?

Yes, the Watts LF07S is designed for flexible installation and can be installed in both horizontal and vertical positions.

What certifications does the Watts 1 1/2 inch LF07S hold?

This product is UL Listed, cULus Listed, CSA B64.4 certified, ASSE 1024 certified, and NSF certified, ensuring it meets strict quality and safety standards.