10 994-DOSY

Item Number: 0439417
Skip to product information
1 of 1
Regular price $45,177.75
Special Order
When Will it Ship: Contact for Lead Time
Estimated transit time: 2 to 5 Business Days

Brand - Watts

  • Size: 10 inch
  • Body Material: Stainless Steel
  • Valve Type: Domestic OSY Shutoffs
  • Maximum Operating Pressure: 175 psi
  • Temperature Range: 33°F-110°F
  • Lead Content: Less than 0.25% lead by weight
  • Flood sensor for discharge detection
  • Easy maintenance with single access cover

Description

This 10 inch Watts Series 994 Reduced Pressure Zone (RPZ) Assembly Backflow Preventer with Domestic OSY Shutoffs safeguards potable water supplies from health hazard cross-connections due to backpressure or backsiphonage. Featuring a durable stainless steel body and relief valve, this lead-free assembly offers long-term corrosion resistance and strength. Its compact design and short lay length facilitate easy installation and maintenance without special tools. Equipped with torsion spring check valves for maximum flow at low pressure drop and an integrated flood sensor for discharge detection, it provides reliable protection in continuous pressure piping applications. Item number 0439417.

Help Me Connect

Connections

  • This 10 inch Reduced Pressure Zone (RPZ) Assembly Backflow Preventer is designed with flanged connections for its Domestic Outside Stem and Yoke (OSY) shutoff valves.
  • The flange dimensions are in accordance with AWWA Class D, ensuring compatibility with standard piping systems for this size.
View full details

Collapsible content

Additional Details

This 10 inch Reduced Pressure Zone (RPZ) Assembly Backflow Preventer with Domestic OSY Shutoffs is designed to protect potable water supplies from contamination caused by backsiphonage or backpressure from non-potable sources, in accordance with national plumbing codes and water authority requirements. Its compact modular design facilitates easy maintenance with a single access cover for in-line repairs, making it ideal for continuous pressure piping applications and health hazard cross-connections.

Construction & Design

  • Features a short lay length and lightweight stainless steel body for reduced installation and shipping costs.
  • Equipped with corrosive resistant stainless steel bottom mounted relief valve with a balanced rolling diaphragm for lower maintenance.
  • Includes patented torsion spring check valves and thermoplastic check valves with stainless steel hinge pins for trouble-free operation.
  • Domestic Outside Stem and Yoke (OSY) resilient seated gate valves are provided for reliable shutoff.
  • No special tools are required for servicing.
  • Compact construction allows for smaller enclosures and reduces clearance requirements when installed against an outside wall.

Flood Detection

  • Incorporates a flood sensor on the relief valve to detect excessive water discharges.
  • The flood sensor relays a signal to trigger notification for facility personnel, helping to limit flooding and costly damage.
  • An add-on connection kit is required to activate the flood sensor's communication features; without it, the flood sensor acts as a passive component.
  • Flood alert feature compatible with BMS and cellular network communication with an add-on sensor connection kit.

Specifications

  • Size: 10 inch
  • Product Type: Reduced Pressure Zone Assembly
  • Body Material: Stainless Steel
  • Valve Type: Domestic Outside Stem and Yoke (OSY) resilient seated gate valves
  • Check Valve Type: Torsion spring, Thermoplastic with stainless steel hinge pins
  • Relief Valve: Stainless steel, Bottom mounted, Balanced rolling diaphragm
  • Flood Sensor: Integrated, requires add-on connection kit for active alerts
  • Maximum Working Pressure: 175 psi (12.1 bar)
  • Temperature Range: 33°F-110°F (0.5°C - 43°C)
  • All Internal Metal Parts Material: 300 Series stainless steel
  • Main Valve Body Material: 300 Series stainless steel
  • Check Assembly Material: Noryl®
  • Lead Content: Wetted surface contains less than 0.25% lead by weight
  • Flange Dimension: In accordance with AWWA Class D

Certificates & Approvals

  • AWWA C511-92
  • CSA B64.5
  • UL Classified (2 1/2" - 12")
  • FM Approved (2 1/2", 3", 4", 6", 8", 10")
  • Approved by Foundation for Cross Connection Control & Hydraulic Research at USC (2 1/2" to 6")

FAQs

What is the primary function of the Watts 994-DOSY backflow preventer?

The Watts 994-DOSY 10 inch Reduced Pressure Zone (RPZ) assembly backflow preventer is designed to protect potable water supplies from contamination caused by backpressure and backsiphonage, specifically for health hazard cross-connections.

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

This assembly features a stainless steel body and a stainless steel relief valve for long-term corrosion resistance. All internal metal parts are 300 Series stainless steel, and the check assembly is made of Noryl®.

Does this backflow preventer include a flood sensor?

Yes, it includes a flood sensor on the relief valve to detect excessive water discharges. An add-on connection kit is required to activate its communication features for active alerts.

What are the maintenance requirements for this unit?

The compact modular design allows for easy maintenance with a single access cover for in-line repairs. No special tools are required for servicing the unit.

What are the operating pressure and temperature limits for the 10 inch 994-DOSY?

The Watts 994-DOSY is rated for a maximum working pressure of 175 psi (12.1 bar). It can operate within a temperature range of 33°F-110°F (0.5°C - 43°C).