[Wannabe]

I need a 3rd vacuum pump due to breaking a 2nd.

I've not seen any of the breast suction hand pumps up close, but most look pretty flimsy to my. My suction system is entirely DIY and I bought a vacuum pump that comes with a brake bleeder kit from Harbor Freight for something like $25. It's made of brass and steel. It's quite durable and I suggest it. The only trick may be in interfacing the hose connections to your cups. It uses 3/8" x 1/4" tubing. I bought my clear tubing at Home Depot.