About this project The HEYTUR Inflatable Vertical Plate Valve Adapter allows you to connect any standard electric pump, foot pump or compressor to a schrader valve fitting, the standard valve for car and bicycle tires. It fits most inflatable standing boards. It is also suitable for boats and kayaks that are also inflated with Halkey-Roberts valves. Easily reach 20 PSI with your compressor or tire pump. Be careful not to over-inflate your board or craft, and check the board pressure frequently. This is just an adapter. The speed at which your board is inflated depends on the pump used. Since the compressor/tire pump takes time to inflate, it is recommended to inflate the board with a hand pump until it becomes difficult to pump, then use the top of the adapter to get rid of the pressure. Remove the SUP valve cap and ensure the valve is sealed for inflation by rotating the center pin to the outer/closed position. Insert the valve adapter into the SUP valve in the same way as the pump hose nozzle. Connect any standard schrader pump to the valve adapter fitting to inflate your board. Always monitor the plate pressure when inflating Size: 8.2*2.0.7cm