A pneumatic spare coil is an essential replacement component used in solenoid-operated pneumatic valves. It generates the electromagnetic field required to actuate the valve’s plunger, enabling reliable control of air flow in automation and fluid-control systems. Designed for durability and easy installation, the spare coil restores optimal performance to pneumatic solenoid valves without requiring full valve replacement. Available in multiple sizes and voltage ratings (12V DC, 24V DC, 110V AC, 220V AC) to fit various valve brands and models.