Airhead Inflatables Replacement "Multi-Valve" Kit Inflate with Speed & Flexibility - The Airhead Multi-Valve consists of 2 Boston Valves with different thread patterns on the bottom and a Shrader Valve. One of the Boston Valves will fit your inflatable. Use the Shrader Valve to inflate quickly at a gas station or marina. Or, screw off the Shrader Valve and inflate the Boston Valve with a low pressure/high volume pump.