I recently purchased a 450 and have several questions. I have conducted research through oldgas search, but questions remain.
What is bonnet diameter? Height?
What do the three rods that attach the bonnet to jar lid look like?
What secures the safety glass to the jar lid?
I have seen a couple pumps with a special drain back dump valve that is activated with a rod between the drain back dump valve and the drain back lever. The parts diagram shows this dump valve. My pump has no evidence of this dump valve, but there is a slot in the skin for the rod to pass thru. Was the dump valve an option or standard?