Yes, inverted trap is like an upside down "U" or "P". In my application, the rubber vacuum hose runs from the base of the carburetor up to some 1/2" steel tubing, the tube is vertical and connects to the bottom of the check valve, then out of the top of the valve it makes a short vertical run and then a 180 degree turn and down to the frame.


1957 Chevrolet 5700 LCF 283 SM420 2 speed rear, 1955 IH 300U T/A, 1978 Corvette 350 auto, 1978 Yamaha DT175, 1999 Harley Davidson Softail Fat Boy