4 DERINGER 30X GPM

Item Number: D-4030X-GPM
1 1
$3,797.41
Limited Stock (4)
Estimated transit time: 2 to 5 Business Days Eligible for Express Shipping

Brand - Deringer
  • Type: Double Check Detector Backflow Preventer
  • Nominal Size: 4 inch
  • Housing Material: 100% 304 Stainless Steel
  • End Connections: IPS Grooved for Steel Pipe
  • Maximum Working Pressure: 175 PSI
  • Temperature Range: 33ºF – 140ºF
  • Features Patented Dual-action™ Check Modules
  • Includes Prewired Supervisory (Alarm) Switches

Description

The Deringer™ 30X 4-inch Double Check Detector Backflow Preventer Assembly prevents non-health hazard pollutants from entering potable water systems due to backpressure or backsiphonage. Its 100% stainless steel housing and integral shutoff valves make it suitable for indoor and outdoor applications. This assembly features patented Dual-action™ check modules for reliable low and high-flow performance, along with prewired supervisory switches for fire sprinkler systems requiring unauthorized water usage monitoring. It has IPS grooved ends and a maximum working pressure of 175 PSI. Item number D-4030X-GPM.

Help Me Connect

Connecting to Your System

  • The Deringer™ 30X 4 inch backflow preventer features IPS grooved ends, specifically designed for connection to steel pipe systems compliant with AWWA C606 standards.
  • This assembly is suitable for both horizontal and vertical installations.
  • Flange adapters are available for alternative connection types, meeting ANSI B16.1 Class 125 standards.
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Additional Details

The Deringer™ 30X Double Check Detector Assembly is a 4-inch backflow preventer designed to safeguard potable water systems from non-health hazard pollutants caused by backpressure or backsiphonage, commonly used in fire sprinkler systems to monitor unauthorized water usage.

Features

  • Oversized checks for extreme performance.
  • Integral shutoff valves for indoor or outdoor application.
  • Constructed with a 100% stainless steel housing.
  • Features tamper-resistant test cocks.
  • Patented Dual-action™ check modules: poppet style for low flow, swing action for high flow.
  • Equipped with silicone elastomer check discs.
  • Includes a CuFF® gasket bypass meter.
  • Lead Free* bronze bypass components.
  • Designed with a DCDA-II single check bypass.
  • Includes prewired supervisory (alarm) switches.
  • Flange adapters are available.
  • Features IPS grooved ends.

Design & Operation

  • This assembly utilizes two independent Dual-action check modules and two integral eccentric coated shutoff valves, all housed within a single rigid 304 stainless steel valve housing.
  • Integral shutoff valves include prewired supervisory tamper switches within a weatherproof actuator housing for both indoor and outdoor use.
  • The Dual-action check modules employ replaceable silicone elastomer sealing discs and operate via a tamper-resistant actuator.

Specifications

General

  • Product Type: Double Check Detector Backflow Preventer Assembly
  • Series: Deringer™ 30X
  • Nominal Size: 4 inch
  • End Connections: IPS Grooved for Steel Pipe (AWWA C606)
  • Maximum Working Pressure: 175 PSI (12 bar)
  • Temperature Range: 33ºF – 140ºF

Materials

  • Valve Housing: 304 Stainless Steel
  • Valve Cover: 304 Stainless Steel
  • SOV Disks: EPDM/304SS
  • SOV Shafts: 304 Stainless Steel
  • Bypass 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
  • Bypass Components: Lead Free Bronze
  • Check Springs: 17-7 Stainless Steel
  • Check Pins: 17-7/18-8 Stainless Steel
  • Check Seats: Noryl® Polymer (NSF)
  • Seals: Buna-N (NSF)
  • Bypass Internals: ABS Polymer

Dimensions (Approximate)

  • Height (Ht): 9.7 inches (246 mm)
  • Length (L): 33.0 inches (839 mm)
  • Depth (D): 5.0 inches (130 mm)
  • Width (W): 15.2 inches (387 mm)
  • Weight: 78 lbs (35 kg)

Certificates & Approvals

  • AWWA C510-07 Compliant
  • ANSI/NSF/CAN 61
  • UL Certified Health Effects
  • UL Certified to ANSI/NSF/CAN 372 (LEAD FREE)
  • C-UL-US Listed
  • FM Approved
  • USC Approved

FAQs

What is the primary purpose of the Deringer™ 30X Double Check Detector Assembly?

Its primary purpose is to prevent non-health hazard pollutants from contaminating the potable water supply system due to backpressure or backsiphonage conditions. It's often used in fire sprinkler systems to monitor for unauthorized water usage.

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

The valve housing, valve cover, and SOV shafts are all constructed from 304 stainless steel. Other components include EPDM/304SS for SOV disks, silicone (NSF) for check disks, and lead-free bronze for bypass components.

Can this backflow preventer be installed in both horizontal and vertical orientations?

Yes, the Deringer™ 30X assembly is designed to be serviceable without special tools and is approved for both horizontal and vertical installation applications.

What type of end connections does this 4-inch model have?

This model features IPS grooved ends, suitable for connection to steel pipe. Flange adapters are also available for different connection requirements.

What is the maximum operating pressure and temperature range for this device?

The maximum operating pressure for this backflow preventer is 175 PSI (12 bar), and it is designed to function within a temperature range of 33ºF to 140ºF.

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