Pacific Double Check Valve - DC4 Style - ABC280809

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Stock Code:
170314
Hamilton
Out of Stock
Christchurch
Out of Stock
Price:
$57.98 Excl. GST
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Double Check Valve - DC4

This DC4-style double check valve is engineered for heavy-duty air-brake and pneumatic systems where a single component must receive air from the higher of two pressure sources. For example: when two reservoirs or two supply circuits exist, this valve automatically selects whichever has superior pressure and directs it to the common delivery port.

Key Features & Benefits

  • Dual inlet ports + one delivery port design allows two supply sources to feed one function, with a shuttle or disc mechanism switching to the higher-pressure source.
  • Installation recommendation: Mount with the shuttle/disc operating horizontally for best performance.

Applications

  • Ideal for commercial trucks, trailers and heavy-equipment air systems where functions like brake supply, reservoir feed or control circuits must always receive the stronger of two sources.
  • Useful when redundancy or dual-source feed is required (e.g., dual reservoirs, primary + auxiliary supply lines) and you must ensure the output remains supplied even if one source drops.
  • A common replacement part for fleets maintaining reliability under varying load or supply conditions.

Why Choose This Valve?

Selecting the proper double check valve ensures your system prevents supply loss when one source fails or drops pressure. The DC4 style is widely used and recognised in heavy-duty air systems, offering proven performance, industry compatibility and simplified maintenance. By using the correct specification (3⁄8″ ports, DC4 format), you simplify installation and ensure operational reliability.


Replaces:

  • 280809
  • ABC280809
Type:  Qty:  Size: 
Supply Port 1  1 3/8" Male
Supply Port 2  1 3/8" Female 
Delivery Port  2 3/8" Female 

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