Transcription of Frequently Asked Questions - Tuthill Pump
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Frequently Asked Questions - Tuthill Pump
12500 S. Pulaski Road Alsip, IL 60803. Tel: 1-708-389-2500 Fax: 1-708-388-0869. Email: Frequently Asked Questions What is cavitation? Cavitation describes the phase change from liquid to gas (boiling) that occurs in a device when the inlet pressure is too low for a given fluid at a given temperature. Since the vapor bubbles take up more volume than the liquid, a reduction of fluid flow occurs. As these vapor bubbles move from the inlet area of a pump toward an area of higher pressure, the bubbles collapse back to a liquid phase, and at the moment of collapse (implode), a powerful shock wave develops within the liquid. This shock wave can blast particles off of nearby solid surfaces, creating pits or caves. Over time this pitting can cause a catastrophic failure. Why is suction pressure important? All pumps rely on external pressure to push fluid into the inlet. This suction pressure can come from ambient air pressure on the fluid, or from the head of fluid above the suction port, and must also push the fluid between the teeth in a gear pump.
12500 S. Pulaski Road Alsip, IL 60803 Tel: 1-708-389-2500 Fax: 1-708-388-0869 Email: tuthillpump@tuthill.com Website: www.tuthillpump.com Frequently Asked Questions
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