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While operations were wound down in Tupelo Pentair continued to expand its water products business. In July 2004, Pentair bought WICOR Industries, the former water systems subsidiary of Wisconsin Energy, for $850 million. [19] WICOR made water pumps, filters, and pool equipment components under the Sta-Rite, SHURflo, and Hypro brands.
The affinity laws (also known as the "Fan Laws" or "Pump Laws") for pumps/fans are used in hydraulics, hydronics and/or HVAC to express the relationship between variables involved in pump or fan performance (such as head, volumetric flow rate, shaft speed) and power. They apply to pumps, fans, and hydraulic turbines. In these rotary implements ...
An eccentric rotary vane pump Another eccentric rotary-vane pump design. Note that modern pumps have an area contact between rotor and stator (and not a line contact). 1. pump housing 2. rotor 3. vanes 4. spring. A rotary vane pump is a type of positive-displacement pump that consists of vanes mounted to a rotor that rotates inside a cavity. In ...
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.
Indiana couple Larry and Kelly Peterson have spina bifida, which they felt made them the right parents to raise a child with the same needs. But they say they faced some backlash from agencies who ...
The process variable, however, is in dimensioned units such as temperature. It is common in this case to express the gain K p {\displaystyle K_{p}} not as "output per degree", but rather in the reciprocal form of a proportional band 100 / K p {\displaystyle 100/K_{p}} , which is "degrees per full output": the range over which the output changes ...