Sealco Tractor Protection Valve - 7700

Stock Code:
170081
Hamilton
In Stock
Christchurch
Low Stock
Price:
$192.50 Excl. GST

Sealco 7700 Double Check Valve

The Sealco 7700 is a durable double check valve designed for commercial vehicle and industrial pneumatic systems. It ensures automatic selection of the higher-pressure source from two supply lines, providing uninterrupted airflow to critical circuits while preventing backflow between sources.

 

Key Features & Benefits

  • Automatic source selection: Delivers air from the higher-pressure supply for consistent operation.
  • Prevents cross-flow: Protects each air source by preventing air from flowing back into the alternate supply line.
  • Compact inline design: Easy to install in truck, trailer, or industrial pneumatic systems.
  • Standard porting: Compatible with common commercial vehicle air plumbing.
  • Rugged construction: Engineered to withstand heavy-duty operating environments.

 

Applications

  • Air-brake and control systems requiring redundant supply protection
  • Auxiliary and suspension air circuits
  • Industrial and commercial pneumatic systems needing uninterrupted airflow

 

Why Choose the Sealco 7700?

The Sealco 7700 provides reliable air source management and system protection in a compact, robust design. Its proven performance and high-quality construction make it ideal for fleet maintenance, workshops, and OEM installations where continuous airflow and system integrity are essential.

Type: Qty:  Size: 
Supply In  1 1/4" NPT
Supply Out  1 1/2" NPT
Control In  1 1/4" NPT
Control Out  1 1/2" NPT

 

Prevents loss of tractor brakes in case of trailer breakaway or loss of air pressure. Automatically closes off lines and vents trailer side supply between 20 to 45 PSI.

Customer Reviews and Ratings

No Reviews

Be the first to review this product!