The usual BVSV is inside the air cleaner box -
B = Bimetal
V = Vacuum
S = Switching
V = Valve
This valve you pointed to was found on some japanese import "recondition" models and was also termed as BVSV. It allows the choke breaker to operate. It works when the manifold gets hot. The vacuum port for this should be near the carburettor throttle butterfly body.
How many clips are on your air cleaner?
Memory is hazy now for these cars, its been a long time.