Parker Hannifin 4M4Z-C04L-1-V-SS O-Ring Check Valve

Parker Hannifin 4M4Z-C04L-1-V-SS O-Ring Check Valve is a compact, inline, one-way valve designed to block reverse flow in fluid power lines, helping to isolate and protect pumps, actuators, and downstream components from backflow-induced pressure spikes and cross-contamination. This listing is for a lot of four units and includes Parker part numbers 4M4Z-C04L-1-V-SS and 4M4Z-CO4L-1-V-SS, making it convenient for stocking multiple locations or outfitting several machines in a single purchase. In operation, the valve relies on an O-ring seal to maintain a tight, one-way path for fluid flow in inline configurations, providing a simple and reliable backflow protection option in hydraulic or pneumatic circuits. Common applications include inline backflow prevention for pumps, relief lines, and actuator circuits in industrial automation, mobile equipment, and process systems where maintaining unidirectional flow is critical to system performance.