The Parker 303SS 36PSI Acid Relief Valve 647B-2-1/4-2 is a high-quality pneumatic valve designed for use in compressors, air tanks, and other pneumatic systems. Made by the trusted brand Parker, this valve features a pressure control function and a maximum pressure of 50 psi, ensuring precise control over your system’s air flow. With a durable construction and reliable performance, this valve is a valuable component for any industrial or commercial application requiring efficient pneumatic control.