What Is Pool Backwash Water?

What Is Pool Backwash Water? Well, as the name suggests, backwashing involves reversing the flow of water through your filter media, be it Zeoplus, sand, glass pearls or diatomaceous earth (DE). This dislodges dirt and debris that may have become trapped, and flushes it out through your multiport valve waste line. Is backwashing a pool

Do Some Vehicles Have Two Fuel Pumps?

Do Some Vehicles Have Two Fuel Pumps? Carbureted engines often use low pressure mechanical pumps that are mounted outside the fuel tank, whereas fuel injected engines often use electric fuel pumps that are mounted inside the fuel tank (and some fuel injected engines have two fuel pumps: one low pressure/high volume supply pump in the