3 994-LF-FS

Item Number: F437806
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$7,254.00
Special Order
When Will it Ship: Contact for Lead Time
Estimated transit time: 2 to 5 Business Days

Brand - Watts
  • Size: 3 inch
  • Weight: 53.0 lb
  • Product Type: Reduced Pressure Zone Assembly
  • Lead Free: Yes
  • Flood Sensor: Yes, with SentryPlus Alert® Technology
  • Shutoff Valves: Not Included
  • Body Material: 300 Series Stainless Steel
  • Maximum Working Pressure: 175 psi
  • Temperature Range: 33°F - 110°F

Description

This 3 inch Watts Series 994 Lead Free Reduced Pressure Zone (RPZ) backflow preventer is designed for health hazard cross-connections, preventing backsiphonage and backpressure in potable water systems. It features a lightweight, corrosion-resistant 300 Series stainless steel body and torsion spring check valves for maximum flow. This model (994-LF-FS) is supplied without shutoff valves and includes an integrated flood sensor with SentryPlus Alert® technology. When activated with an optional connection kit, the sensor detects excessive discharge from the relief valve and triggers notifications, limiting potential flooding and damage.

Help Me Connect

This 3 inch Watts Series 994-LF-FS backflow preventer features flanged connections for installation into your piping system. It is designed to be installed without shutoff valves, as denoted by "LF" in the model number.

The integrated flood sensor requires an add-on sensor connection kit (sold separately) to activate its alert features. This kit allows for communication with Building Management Systems (BMS) or cellular networks for remote notification of excessive water discharges.

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Additional Details

This 3 inch Watts Series 994 Lead Free Reduced Pressure Zone (RPZ) backflow preventer is designed to protect potable water supplies from health hazard cross-connections by preventing the reverse flow of liquids due to backpressure or backsiphonage. This model is supplied without shutoff valves and includes a flood sensor for enhanced discharge monitoring.

Key Features

  • Stainless steel construction provides long term corrosion resistance and maximum strength.
  • Body is half the weight of competitive designs, reducing installation and shipping costs.
  • Short end-to-end dimensions make retrofit easy.
  • Bottom mounted relief valve reduces clearance requirements when installed against an outside wall.
  • Torsion spring check valves provide maximum flow at low pressure drop.
  • Thermoplastic and stainless steel check valves ensure trouble-free operation.
  • No special tools required for servicing, facilitating easy in-line repairs with a single access cover.
  • Compact construction allows for smaller enclosures.
  • Stainless steel relief valve features a balanced rolling diaphragm to eliminate sliding seals and lower maintenance costs.
  • Integrated flood sensor with SentryPlus Alert® technology detects excessive water discharges from the relief valve.
  • Flood alert feature is activated with an add-on sensor connection kit (sold separately), compatible with BMS and cellular network communication, triggering notification to facility personnel.

NOTICE: An add-on connection kit is required to activate the flood sensor. Without this connection kit, the flood sensor is a passive component and does not communicate with any other device. Always ensure proper drainage for discharge and comply with all installation codes and regulations. Watts is not responsible for alert failures due to connectivity issues, power outages, or improper installation. Always read all installation instructions and product safety information thoroughly before beginning installation.

Specifications

  • Product Type: Reduced Pressure Zone Assembly
  • SKU: F437806
  • Size: 3 inch
  • Model: 994-LF-FS
  • Flood Sensor: Yes, with SentryPlus Alert® Technology
  • Shutoff Valves: Not Included
  • Lead Free: Yes (wetted surface < 0.25%)

Materials

  • Main Valve Body: 300 Series Stainless Steel
  • All Internal Metal Parts: 300 Series Stainless Steel
  • Check Assembly: Noryl®

Performance & Operating Conditions

  • Temperature Range: 33°F - 110°F (0.5°C - 43°C) continuous
  • Maximum Working Pressure: 175 psi (12.1 bar)

Dimensions (3 inch)

  • Overall Length (A): 38 in (965 mm)
  • Height (G): 10 in (254 mm)
  • Mounting Hole Spacing (P): 7 1/2 in (191 mm)
  • Weight (without gates): 62 lb (28 kg)

Certificates & Approvals

  • AWWA C511-92
  • CSA B64.5
  • ASSE 1013
  • UL Classified (for OSY models only)
  • FM Approved (for OSY models only)
  • Approved by the Foundation for Cross Connection Control & Hydraulic Research at the University of Southern California (for sizes 2 1/2" to 6")

FAQs

What does "Reduced Pressure Zone (RPZ) Assembly" mean?

An RPZ assembly is a backflow prevention device designed to protect potable water supplies from contamination by preventing the reverse flow of non-potable water, especially in health hazard cross-connection applications.

Does this 994-LF-FS model come with shutoff valves?

No, the "LF" in the model number (994-LF-FS) indicates that this assembly is supplied without shutoff valves. Shutoff valves would need to be procured separately if required for your installation.

How does the integrated flood sensor work?

The flood sensor detects excessive water discharges from the relief valve. To activate its alert features and enable communication (e.g., with BMS or cellular networks), an add-on sensor connection kit is required and sold separately. Without the kit, the sensor is passive.

What is the maximum operating pressure and temperature for this backflow preventer?

This 3 inch Watts Series 994 RPZ assembly has a maximum working pressure of 175 psi (12.1 bar) and can operate continuously in temperatures ranging from 33°F to 110°F (0.5°C to 43°C).

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

The main valve body and all internal metal parts are constructed from 300 Series stainless steel, providing long-term corrosion resistance. The check assembly utilizes Noryl® components.

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