I have a Machine Mart-alike 45L parts washer that didn't come from them: I got it from an Ebay trader in Tyneside for the princely sum of £27 (including delivery since they cocked up and shipped it after I told them I'd collect it!).
Alas it then cost me several body parts to buy enough Jizer with which to fill it! It's good stuff but it eats gloves so god knows what it does to your skin. Oh, it stripped all the paint off the inside of the tank as well!
The pump is a simple impeller type; it's not supposed to be immersed in solvents (so it says in the manual) - fat lot of good that is then, although the Jizer hasn't killed it yet after about 3 years of permanent immersion. It doesn't always start first press of the switch either, I guess either the seals have swollen or the start capacitor is kefurkled.
It has the 'fire-fuse' in the lid but I disconnected it as it was getting in the way of a Lotus twincam I was cleaning at the time (912 for Lotus fans ) and haven't reinstated it.