4000SS

Reduced Pressure Zone Assembly Backflow Preventer, Stainless Steel, Domestic NRS Gates and Flood Sensor
Reduced Pressure Zone Assembly Backflow Preventer, Stainless Steel, Domestic NRS Gates and Flood Sensor
Reduced Pressure Zone Assembly Backflow Preventer, Stainless Steel, Less Shutoffs and Flood Sensor
Reduced Pressure Zone Assembly Backflow Preventer, Stainless Steel, Domestic NRS Gates and Flood Sensor
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Stainless Steel Reduced Pressure Zone Assembly Backflow Preventers with Flood Sensor, 2 1/2 - 12 IN Sizes

Series 4000SS Reduced Pressure Zone assemblies feature a flood sensor with SentryPlus Alert® technology to detect excessive water discharges from the relief valve. Activated through an add-on connection kit, the sensor can trigger the alert system sending notification of flood detection to facility personnel. Connection kits are available for BMS and cellular communication.

This series prevents the reverse flow of contaminated water caused by backsiphonage or backpressure from entering the potable water supply. Ideal for protection at health hazard cross-connections or for containment at the service line entrance. Its compact modular design facilitates maintenance and assembly access. Check with local water authorities for installation requirements.

To learn more visit: https://www.watts.com/floodprotectionsystem

Features

  • Sensor on the relief valve for flood detection
  • Stainless steel construction for maximum strength and corrosion resistance
  • Stainless steel relief valve features balanced rolling diaphragm to reduce maintenance costs and eliminate sliding seats
  • Maximum working pressure: 175 psi (12.06 bar)
  • Cam-check assembly provides low head loss
  • Short end-to-end dimensions make retrofit easy
  • Flood alert feature activated with add-on connection kit, compatible with BMS and cellular communication

Literature

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Approval/Certification Information

For product-specific approval information, please refer to the product’s specification sheet (see literature section above) or ask a Watts representative. For general information regarding any approval certification partners identified in the specification sheet, please visit our certification partners’ websites:


ASSE CSA FM Approvals NSF
UL ULC USC WQA