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AIR GAP DRAIN ASSEMBLY, 6" - 8"

The 6"- 8" 40/50 Air Gap Assembly will capture and evacuate mild water discharge from the Relieve Valve caused by daily fluctuation in system/supply pressure.

Air Gap Assembly will NOT capture and evacuate the maximum discharge caused by catastrophic valve or system failure. An auxiliary drain (separate and independent of the Air Gap Assembly) is REQUIRED and MUST be properly sized for the Maximum Relief Valve Discharge Rate (see specifications below).

This Air Gap assembly can be used on the Deringer 40/40G and 50/50G models and Magnum 40/40G model in sizes 6" through 8".

This Air Gap assembly can be used on:
  • 6" Deringer 40X
  • 6" Magnum 40X
  • 6" Deringer 50X
  • 8" Deringer 40
  • 8" Magnum 40
  • 8" Deringer 50
  • 6" Deringer 40GX
  • 6" Magnum 40GX
  • 6" Deringer 50GX
  • 8" Deringer 40G
  • 8" Magnum 40G
  • 8" Deringer 50G
6"- 8" 40/50 Air Gap Assembly includes:
  • Air Gap Shield
  • Air Gap Reducer
  • Air Gap Bracket
  • All Required Hardware
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MSRP:

$334.00

Pro Price:

$239.00
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NEVER install an RP or RPDA in a location where any amount of discharge from the Relief Valve will cause property damage. For an indoor, pit, vault, mechanical room or enclosure installation of an RP or RPDA, an auxiliary drain (separate and independent of the Air Gap Assembly) is REQUIRED and MUST be properly sized for the Maximum Relief Valve Discharge Rate (see specifications below) corresponding to the system/supply pressure. Backflow Direct shall not be responsible for any damage caused by lack of auxiliary drain, location of auxiliary drain or undersized auxiliary drain. If the buyer is unwilling to meet this requirement please DO NOT purchase this product.



NEVER install an RP or RPDA in a location where any amount of discharge from the Relief Valve will cause property damage. For an indoor, pit, vault, mechanical room or enclosure installation of an RP or RPDA, an auxiliary drain (separate and independent of the Air Gap Assembly) is REQUIRED and MUST be properly sized for the Maximum Relief Valve Discharge Rate (see specifications below) corresponding to the system/supply pressure. Backflow Direct shall not be responsible for any damage caused by lack of auxiliary drain, location of auxiliary drain or undersized auxiliary drain. If the buyer is unwilling to meet this requirement please DO NOT purchase this product.

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Air Gap Assembly

Air Gap Assembly





1. Air Gap Shield

Made of 5GA 4in 304 Stainless Steel the Shield is used indoors to protect from flooding or spraying of water onto sensitive materials.

2. Air Gap Reducer

Diverts water downward into a drain pipe that leads the water to a safe location and fits a 3" drain pipe.

3. Air Gap Bracket

Mounts the Air Gap Assembly to the Relief Valve.

Air Gap  Measuresments





Attaching your Air Gap to an auxiliary drain is required to prevent water damage. We have provided some dimensions to help in the design of the auxiliary drain plumbing. A 3” drain pipe can be attached to the base of the air gap by using the included rubber fitting and hose clamp.

Air Gap Assembly Measurements

 Maximum Relief Valve   Discharge Rates

Backflow Direct Relief Valve Discharge Rates

Air Gap Assembly will capture and evacuate light water discharge from the Relief Valve caused by daily fluctuation in system/supply pressure. An Air Gap Assembly will NOT capture and evacuate the Maximum Relief Valve Discharge Rate caused by catastrophic valve or system failure. An auxiliary drain (separate and independent of the Air Gap Assembly) is REQUIRED and MUST be properly sized for the Maximum Relief Valve Discharge Rate. Backflow Direct shall not be responsible for any special, consequential or incidental damages, including without limitation, repair costs, lost profits, property damage, or any other costs resulting from labor charges, delays, vandalism, negligence, fouling caused by foreign material, adverse water conditions or any other circumstances, caused by lack of auxiliary drain, location of auxiliary drain or undersized auxiliary drain.

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Relief Valve Discharge Rates

Relief Valve Discharge Rates

The Deringer & Magnum Relief Valve Discharge rate sheet provides information on relief valve water discharge rate, air gap components and pricing and proper drain installation procedures.

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Air Gap Assembly Installation Instructions

Installation  Instructions

This is a printable version of step by step instructions for installing the 6" - 8" air gap assembly on a Deringer or Magnum 40(X) or 50(X) backflow preventor.

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Backflow Direct Product Warranty

Product  Warranty

This printable document provides information for the Backflow Direct one year warranty for Deringer and Magnum backflow preventers.

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