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Brand - Deringer
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Size: 4 inch
Weight: 52.0 lb
Working Pressure: 10 - 175 psi
Housing Material: 304 Stainless Steel
Dual-action check module for low- and high-flow
Prewired supervisory switches
Flood sensor with SentryPlus Alert® technology
LEAD FREE certified
End Connections: IPS Grooved
Description
The 4 inch Ames Deringer 40 Reduced Pressure Zone Backflow Preventer Assembly is designed to protect potable water systems from hazardous contaminants and non-health hazard pollutants due to backpressure or backsiphonage conditions. It features a robust 304 stainless steel housing, integral shutoff valves, and IPS grooved ends for steel pipe. The unit includes patented Dual-action check modules for optimal performance at both low and high flow rates, prewired supervisory switches, and a flood sensor with SentryPlus Alert® technology. With a working pressure range of 10-175 psi and LEAD FREE certification, it ensures reliable and safe operation. Item number D-4040.
Help Me Connect
Connections
This assembly features IPS grooved ends for connection to steel pipe, conforming to AWWA C606.
Flange adapters are available, conforming to ANSI B16.1 Class 125, for alternative connection methods.
This 4 inch Ames Deringer™ 40 reduced pressure zone backflow preventer assembly is designed to prevent hazardous contaminants and non-health hazard pollutants from entering a potable water supply system caused by backpressure and/or backsiphonage conditions.
It features integral shutoff valves, grooved ends, and dual-action check modules for high performance.
Features
Integral shutoff valves designed for indoor or outdoor application
Constructed with 100% stainless steel housing
Equipped with tamper-resistant test cocks
Includes a stainless steel braided wire sensing line
Features a patented Dual-action™ second check module for poppet action at low flow and swing action at high flow
Utilizes a balanced chamber relief valve requiring no sliding seals
Poppet action first check for more reliable relief valve closure
Comes with prewired supervisory switches
Includes a flood sensor with SentryPlus Alert® technology to detect excessive water discharges from the relief valve
Available with flange adapters
Features IPS grooved ends
Specifications
Size: 4 inch
Model: Deringer™ 40
Working Pressure: 10 - 175 psi
Temperature Range: 33°F - 140°F
Materials
Valve Housing: 304 Stainless Steel
Valve Cover: 304 Stainless Steel
SOV Disks: EPDM/304SS
SOV Shafts: 304 Stainless Steel
RV Spring: 302 Stainless Steel
SOV Bearings: PTFE Fluoropolymer/Bronze
Non-wetted Bolts: Grade 8 Zinc Plated
Check Disks: Silicone (NSF)
Wetted Fasteners: 18-8 Stainless Steel
RV Housing: 304 Stainless Steel
Check Springs: 17-7 Stainless Steel
Check Pins: 17-7/18-8 Stainless Steel
Check Seats: Noryl® Polymer (NSF)
O-rings: Buna-N (NSF)
RV Hose: Braided Stainless Steel Wire
Connections
End Connections: IPS Groove for Steel Pipe (AWWA C606)
Flange Adapters: ANSI B16.1 Class 125
Certificates & Approvals
AWWA C511-07 Compliant
ANSI/NSF/CAN 61
UL Certified Health Effects
UL Certified to ANSI/NSF/CAN 372
LEAD FREE
FM Approved
ASSE 1013
FAQs
What is the primary function of the Ames Deringer 40 Reduced Pressure Zone Backflow Preventer?
Its primary function is to prevent hazardous contaminants and non-health hazard pollutants from entering a potable water supply system, protecting against backpressure and backsiphonage conditions.
What material is the valve housing made from?
The valve housing is constructed entirely of 304 Stainless Steel, ensuring durability and corrosion resistance.
What are the recommended operating pressure and temperature ranges for this assembly?
This backflow preventer is designed for a working pressure range of 10 to 175 psi and a temperature range of 33°F to 140°F.
Does this backflow preventer include any smart monitoring features?
Yes, it includes a flood sensor with SentryPlus Alert® technology to detect excessive water discharges from the relief valve, and comes with prewired supervisory switches.
What type of end connections does the 4 inch Deringer 40 assembly have?
The assembly features IPS grooved ends, primarily designed for connection to steel pipe. Flange adapters conforming to ANSI B16.1 Class 125 are also available.
