My tyres are rated at 120psi and I like to inflate them close to that. My pump is electric with presure indicator. If I just unscrew the pump and connect it back the pressure drops by about 20psi. I have tried multiple pumps with the same result on both wheels.
Is there any device that I can connect between the pump and the valve to allow a quicker / 'cleaner' disconnection from the valve? Of course I can push to 120 psi and let it drop, but trying not to get close to the limit.