FAQ

|3/4/5 Port Solenoid Valves

Does the VFS series perfect type valve have a smaller effective area due to the perfect spacer?

Yes, the sonic conductance (effective area) of the 3-position perfect type (2-stage, exhaust center + perfect spacer) will be reduced by around 40% compared to the 3-position exhaust center type, although the exact amount depends on the model.