378414 Pressure Protection Valve – 1/4″ Inlet × 1/8″ Outlet – Maintains 65–75 PSI Holdback Pressure – Heavy‑Duty Air Brake Safety Valve

The Parker Chelsea 378414 Pressure Protection Valve is a genuine OEM pneumatic safety component designed to maintain consistent system protection in heavy-duty air brake and auxiliary air applications. With a 1/4″ NPT inlet, 1/8″ NPT outlet, and calibrated 65–75 PSI holdback range, this valve ensures proper air pressure retention, preventing loss in secondary or auxiliary systems. Engineered to Parker Chelsea standards, the 378414 valve offers rugged durability, corrosion resistance, and long-term reliability for commercial trucks, vocational vehicles, and hydraulic support systems requiring dependable air control.

• Genuine Parker Chelsea OEM Component: Authentic 378414 pressure protection valve engineered for reliable pneumatic performance in heavy-duty truck and equipment air systems.
• Precise Pressure Regulation: Maintains a consistent 65–75 PSI holdback pressure to protect downstream air circuits and ensure safe system operation.
• Durable Construction: Built from corrosion-resistant materials for dependable service in demanding commercial and industrial environments.
• Standardized Fittings: Features a 1/4″ NPT inlet and 1/8″ NPT outlet for easy integration into existing air brake or auxiliary air control systems.
• Reliable System Protection: Prevents air loss in auxiliary circuits, safeguarding primary air brake function in line with OEM safety standards.