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 inch sizes 6" through 8".
This Air Gap assembly can be used on:
- 6" Deringer 40X / 40GX
- 6" Magnum 40X / 40GX
- 6" Deringer 50X / 50GX
- 8" Deringer 40 / 40G
- 8" Magnum 40 / 40G
- 8" Deringer 50 / 50G
6"- 8" 40/50 Air Gap Assembly includes:
- Air Gap Shield
- Air Gap Reducer
- Air Gap Bracket
- All Required Hardware
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.
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.
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 preventer.
Air Gap Assembly
- 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.
- Air Gap Reducer Diverts water downward into a drain pipe that leads the water to a safe location and fits a 3" drain pipe.
- 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.
Maximum 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.
One Year Warranty
Backflow Direct warrants its product to be free from defects in material and workmanship under normal operating conditions for a period of one year from the date of original shipment. In the event of such defects within the warranty period, Backflow Direct retains the exclusive right to repair or replace (with a new or newly rebuilt product) the device or offer a full refund of the original purchase price at its sole discretion. Backflow Direct assumes no liability for replacement of inoperative products beyond the warranty period.
THE WARRANTIES AND REMEDIES CONTAINED HEREIN ARE EXCLUSIVE AND IN LIEU OF ALL OTHER WARRANTIES EXPRESS, IMPLIED, OR STATUTORY, INCLUDING ANY LIABILITY ARISING UNDER ANY WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, STATUTORY OR OTHERWISE.
THE REMEDY ABOVE SHALL BE THE SOLE AND EXCLUSIVE REMEDY FOR ANY BREACH OF WARRANTY. Backflow Direct shall not be responsible for any special, consequential or incidental damages, including without limitation, repair costs or lost profits or property damage as a result of product malfunction or any other costs resulting from labor charges, delays, vandalism, negligence, fouling caused by foreign material, adverse water conditions or any other circumstances over which Backflow Direct has no control. SOME STATES DO NOT ALLOW THE EXCLUSION OF INCIDENTAL OR CONSEQUENTIAL DAMAGES, IN SUCH STATES, THE ABOVE LIMITATIONS MAY NOT APPLY.
This warranty shall be invalidated by any abuse, misuse, misapplication, improper installation or improper maintenance or alteration of the products.
To obtain warranty service, contact us for further instructions. When credit is issued it will be at the original purchase price.
Product Specific Warranty
1) NRS, OS&Y and/or any Gate Valves utilized as shut off valves on Backflow Direct products are covered by original manufacturer's warranty ONLY.
2) Reduced Pressure Principle Backflow Preventers (RP or RPDA) can and WILL discharge water. 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 corresponding to the system/supply pressure. 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.
3) Air Gap Assembly will capture and evacuate light water discharge from the Relieve 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.
This warranty shall be invalidated by any abuse, misuse, misapplication, improper installation or improper maintenance or alteration of the products.
To obtain warranty service, contact us for further instructions. When credit is issued it will be at the original purchase price.