Plunger With Rear Facing Bumper for Air Manifold

An air bed system comprising:

• a mattress having at least one inflatable air chamber;
• an air pump;
• and
• a valve in fluid connection between the air pump and the inflatable air chamber so as to selectively regulate fluid communication between the air pump and the inflatable air chamber, wherein the valve comprises:
• a solenoid coil;
• a plunger having a core configured to respond to a magnetic field generated by the solenoid coil;
• a valve disc positioned at a head end of the core and configured to cushion impact when the valve is closed;
• and
• a bumper positioned at a tail end and configured to cushion impact when the valve is opened, the bumper comprising a cavity in a rear-facing surface of the bumper, the cavity extending from the rear-facing surface toward the core.