Pneumatically self-regulating valve

A pneumatic motor, comprising:

• a cylinder;
• a piston disposed in the cylinder;
• and
• a pneumatically-reset pilot valve configured to move to a first position in response to a change in pressure in the cylinder, wherein the pneumatically-reset pilot valve is configured to pneumatically signal the main valve to increase the pressure in the cylinder when the piston travels to an end of the cylinder.

A fluid dispensing system, comprising:

• an air motor comprising:
• a main valve configured to route a flow of pressurized air within the air motor;
• a pilot valve configured to determine whether the air motor is in a phase of its cycle, and in response to a determination that the air motor is in the phase, pneumatically signal the main valve to re-route the flow of pressurized air, wherein the pilot valve is configured to stop pneumatically signaling the main valve in response to an increase in air pressure arising from the re-routed flow of pressurized air;
• wherein the pilot valve comprises a spool valve having a first surface in fluid communication with an interior volume of the air motor that receives the re-routed flow of pressurized air, and wherein the spool valve has a second surface in the fluid communication with the atmosphere.

A method of operation, comprising:

• determining whether a piston is in a position in a cylinder;
• if the piston is in the position, moving a pilot valve, wherein moving the pilot valve comprises moving the pilot valve with a magnetic force;
• changing a fluid pressure in the cylinder in response to the pilot valve moving;
• and
• resetting the pilot valve with a force that arises from the change in fluid pressure.