Check Valves PP 4mm Blue - Plug in Check Valve for Air Pumps and Industrial Devices Inline Air Valve

disposable check valve with non-return device effectively prevents backflow in air pump systems. The adapted valve mechanism reacts faster to pressure drops, especially effective on nail guns or compressors. 4mm Calibrated Bore - Designed exclusively for 4mm air hoses. Prevents pressure loss thanks to a precise fit, tested on common air pump models. Ensures waterproof connections up to 2 bar for stable tool performance. PP material with industrial validation. polypropylene housing: chemically resistant to lubricating oils and coolants. Ideal for workshop environments such as auto repair or warehouses. Noise reduction for air applications Silent valve: specially optimised for diaphragm air pumps. Significantly reduces annoying return noise in industrial environments. Your workspace remains quieter. Quick tool-free installation plug