Random pro-tip (from a noob): if you have a lever-head pump that pops off at higher pressures (especially with non-threaded valves), a wrap of painters tape on the stem may help keep the valve on.
(My pump that was popping off over 100psi on my unthreaded valve extensions was secure up to 140psi). Necessity is the mother of invention: I needed to glue my tubulars and my new pump hadn't arrived.