Hi

i am chcking force on float in an air relife valve. my input is an inlet pressure that come over pipe and then go into the air relife valve

i did some real test on that valve and got that in pressure of 1.41 bar(abs)  (the real pressure gauge showed me 0.40 bar) the float start to go up

now i trying to simulaite that expirment to check if the drag force on the float is equal to the "mg" of the float in that pressure.  and  i dont know if i need to put static or total pressure in the inlet?.

in the real expirment the inlet pressure start when a gate valve open and the the gauge over there showed me the 0.4 bar

thanks

Oshri