Looking for a small pneumatic pump and valve

We’re starting to design our Halloween 2024 display. (I know. Get a life…)
In the past I used drill motors and H-bridges to animate props, but this year I have an idea to repurpose pool water toys as linear actuators. I am planning to pressurize a tank to 10 to 20 pounds. I am looking for a way to monitor the tank pressure, and a small valve to send pressurized air to the actuator.

Of course all of the props will be controlled from a Home Assistant panel.

Any ideas would be appreciated.