Human Immunodeficiency Virus, commonly known as HIV, is a virus that affects the immune system by destroying white blood cells known as CD4 cells. These cells are responsible for fighting disease.
Servovalve, Hydraulic-Description. A hydraulic servovalve is a servo (see Servo, Hydraulic â Description) with a device (either flapper nozzle or jet pipe) used to position the servo. The term electrohydraulic servovalve is often used because servovalves are controlled through an electrical signal.
Pressure Regulating Valve Rebate. The City of Austin offers a $100 rebate for the purchase and installation of a Pressure Regulating Valve (PRV) for residential water customers. PRVs are a type of valve installed in a property's plumbing to regulate water pressure.They also help to conserve water, because higher water pressure leads to more waste.he City of Austin offers a $100 rebate for the purchase and installation of a Pressure Regulating Valve (PRV) for residential water customers. PRVs are a type of valve installed in a property's plumbing to regulate water pressure. They also help to conserve water, because higher water pressure leads to more waste.