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2. API Standard 682 - Wikipedia

   en.wikipedia.org/wiki/API_Standard_682

   API Standard 682, titled "Pumps - Shaft Sealing Systems for Centrifugal and Rotary Pumps," is the American Petroleum Institute standard for end-face mechanical seals. [1] The purpose of API 682 is to assist in the selection and operation of end face mechanical seals in centrifugal pumps. It is based on the combined knowledge and experience of ...

3. Centrifugal pump - Wikipedia

   en.wikipedia.org/wiki/Centrifugal_pump

   Centrifugal pumps with an internal suction stage such as water-jet pumps or side-channel pumps are also classified as self-priming pumps. [10] Self-Priming centrifugal pumps were invented in 1935. One of the first companies to market a self-priming centrifugal pump was American Marsh in 1938. [citation needed]

4. End-face mechanical seal - Wikipedia

   en.wikipedia.org/wiki/End-face_mechanical_seal

   The first commercially successful mechanical seal to be used on centrifugal pumps was probably made by the Cameron Division of the Ingersoll-Rand Company. The Cameron seal was installed in a number of centrifugal pipeline pumps in 1928. [6] Mechanical seals in the 1930s often used a face combination of hardened steel versus leaded bronze.

5. Plunger pump - Wikipedia

   en.wikipedia.org/wiki/Plunger_pump

   A plunger pump is a type of positive displacement pump where the high-pressure seal is stationary and a smooth cylindrical plunger slides through the seal. This makes them different from piston pumps and allows them to be used at higher pressures. This type of pump is often used to transfer municipal and industrial sewage. [1] [2]

6. 10 Vintage Train Sets That Are Worth Digging Out of Storage - AOL

   www.aol.com/finance/10-vintage-train-sets-worth...

   With its vibrant orange and black theme, this spooky set from 1960 includes a 4-4-0 locomotive, haunted gondola complete with livestock, and pumpkin-themed accessories.

7. Liquid-ring pump - Wikipedia

   en.wikipedia.org/wiki/Liquid-ring_pump

   Single-stage vacuum pumps typically produce vacuum to 35 torr (mm Hg) or 47 millibars (4.7 kPa), and two-stage pumps can produce vacuum to 25 torr, assuming air is being pumped and the ring-liquid is water at 15 °C (59 °F) or less. Dry air and 15 °C sealant-water temperature is the standard performance basis, which most manufacturers use for ...