The lock shield valves are installed usually in the fire hose reel and the valve can be opened only by the key. and the key shall be kept with the maintenace team not in the valve. So the valve cannot be closed by the other people.
Valve pocketing is when a valve is hammering the valve seat.mostly due to miss adjusted valve spring/wrong valve spring/to strong of a valve spring or valve stem to short.Makes the valve seat deeper.
tricuspid valve,bicuspid valve and pulmonary valve
A valve spring "keeper" or AKA a valve spring "retainer" is used to lock a valve spring to the valve.
# The PCV valve is located in the valve cover # Detach the hose from the valve then unscrew the valve from the valve cover
Spill valve is a overflow valve.
Ileocecal valve
The valve guide is a precise hole in the head that the valve stem slides in. The valve is retained by the retainer and two valve locks.
intake valve is bigger.
the triscuspid valve is the valve in a bathroom sink.
a gate valve is a one way totally open or closed valve, a control valve is a variable valve.
Valve clearance