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AIR GAP DRAIN ASSEMBLY, 2" - 4"

The 2"- 4" 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).

The Air Gap assembly can be used on:
  • 2½" - 4" Deringer 40
  • 2½" - 4" Magnum 40
  • 2½" - 4" Deringer 50
  • 2½" - 4" Deringer 40G
  • 2½" - 4" Magnum 40G
  • 2½" - 4" Deringer 50G
2"- 4" 40/50 Air Gap Assembly includes:

  • Air Gap Shield
  • Air Gap Reducer
  • Air Gap Bracket
  • All Required Hardware
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MSRP:

$292.00

Pro Price:

$209.00
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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

2in-4in 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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