Pioneer Raindrop Drinking Fountain - Stainless Steel

I used to love this and my cat drinks happily from it. It's also very hygienic, way better than plastic. However, the pump tends to make the upper part vibrate and make annoying noises (think about a refrigerator, but slightly louder and constantly on). Noise is reduced if the case of the pump is perfectly aligned, but it's hard to achieve it. Also (after a few years, I wouldn't consider it a defect), one of the suckers of the pump case broke, and I cannot find a replacement.