2nd Check Assembly, 4X - 6" (DC) Deringer/Magnum 20/30
The 4X" - 6" Second Check Valve Assembly can be used on the Deringer 20 (DC) & 30 (DCDA-II) or the Magnum 20 (DC) and comes pre-assembled from the factory ready for installation.
Note: This check valve assembly is for the 4X" - 6" Deringer 20/30 and 6" Magnum 20 models only. The first and second check valves are not interchangeable.
Dual-Action™ Check Modules
The Patented Dual-Action Check™ (US8875733) is the core technology behind the superior performance of Deringer Backflow Prevention Product Line. The Dual-Action Check™ combines all of the best features of industry standard “poppet” checks and “swing” checks into a single high performance check module.
- Light weight engineered polymer components.
- Modular for easy removal of complete check from body.
- Easily disconnect spring tension for safe check servicing.
- Replaceable Silicone Rubber Elastomer Disk.
- Excellent resistance to fouling
Poppet Action
Features:
- Initial 25% of check stroke is that of a poppet check
- Consistent static sealing
- Excellent resistant to fouling
- Reliable check closure
- Stable flow characteristics at lower flow rates
Swing Action
Features:
- Final 75% of check stroke is that of a swing check
- Minimal friction loss at high flow rates
- More linear flow path water through valve.
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.