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Oil Well Pump Motors – Severe Duty Motors – Pool Pump Motors – One of the quietest motor pump on the market, due to its permanent magnet motor and TEFC design; Compare to the ODP (Open Drip Proof) motor design, which has ventilation openings which are guarded to prevent falling water from entering the motor windings.
In the 1980s, Monarch Spas developed the dual-zone swim spa, allowing the pumps and other equipment needed for the pool to also power a separate spa. One advantage of the modern dual-zone system is the ability to set different temperatures and use different chemicals in each pool area.
Piston pumps can be made variable-displacement by inserting springs inline with the pistons. The displacement is not positively controlled, but decreases as back-pressure increases. Another variation is the variable-displacement vane pump, a type that has found usage in motor vehicle automatic transmissions, such as the General Motors Hydra-Matic.
Residential pool pumps are typically run for 4 hours per day in winter (when the pool is not in use) and up to 24 hours in summer. To save electricity costs, most pools run water pumps for between 6 hours and 12 hours in summer with the pump being controlled by an electronic timer .
Then there was “quiet quitting,” in which people chose to work as little as possible while still staying employed and probably applying for other positions. As 2025 approaches, a new trend ...
A 0.75 HP bore-well submersible pump which had been used to pump groundwater One style of submersible pump for industrial use. Outlet pipe and electrical cable not connected. A submersible pump (or electric submersible pump (ESP) is a device which has a hermetically sealed motor close-coupled to the pump body. The whole assembly is submerged in ...