Pressure Protection Valves
Should an attached device ever fail, this pressure protection valve from Sealco protects the air brake system (ABS).
The pressure protection valve has a built-in check valve. The check valve allows the system reservoirs to be filled directly from the supply line. This prevents the air brake reservoirs from becoming depleted.
Each part number features a valve that closes at the indicated nominal PSI, according to the chart below.
Sealco’s pressure protection valves include a positive one-way check valve and an internal filter.
Part Number | Inlet Port (NPT) | Outlet Port (NPT) | Nominal Closing |
140200 | 3/8" | 3/8" | 50 PSI |
140270 | 3/8" | 3/8" | 60 PSI |
140280 | 3/8" | 3/8" | 70 PSI |
140290 | 3/8" | 3/8" | 80 PSI |
140300 | 1/4" | 1/4" | 50 PSI |
140370 | 1/4" | 1/4" | 60 PSI |
140380 | 1/4" | 1/4" | 70 PSI |
140390 | 1/4" | 1/4" | 80 PSI |
140680 | 3/8" | 1/4" | 70 PSI |
