Help, My House Smells!. Every house has a smell. âItâs a combination of the people who live there, their perfume, aftershave, the food they cook, and other things. Most of the time itâs a good smell, but sometimes, itâs really not,â says cleaning expert and best-selling author Linda Cobb, aka The Queen of Clean.
Making the world better, one answer at a time. Nissan's swirl control valve (SCV) is an actuator that modulates intake air flow into the engine to increase low and high engine speed efficiency.The SCV does this by constricting the intake opening during idling and low engine speeds.nswered by The Community. Making the world better, one answer at a time. Nissan's swirl control valve (SCV) is an actuator that modulates intake air flow into the engine to increase low and high engine speed efficiency. The SCV does this by constricting the intake opening during idling and low engine speeds.
1 Vacuum pressure safety valve (VPSV): an automatic system that relieves static pressure on a gas. 2  Used when the pressure difference between the vessel pressure and the ambient pressure is small, negative and near to atmospheric pressure.