A – Vacuum hose
B – *Check valve connects manifold to port on vacuum pump
C – Optional Muffler
D – Intake port
E – Exhaust port
F – Ground wire
G – Positive wire (connect to vacuum switch)
H – Optional mounting hardware
I – Bolts and washers
J – Insulation washers
K – Electrical fittings
L – Connects to vehicle power source
M – Vacuum switch
Is there a check valve that allows release of vacuum on the treadlevac booster when in operation?
The treadle vac unit does not have any type of check valve that we are aware of. Thanks