Aromatic Substitution Products with Fluorine by Bancroft W. D.

By Bancroft W. D.

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3). 1 An oil mist inlet connection, 1/4 NPS, shall be provided in the top half of the bearing housing. The pure or purge oil mist fitting connections shall be located so that oil mist will flow through rolling element bearings. On puremist systems, there shall be no internal passage to short circuit oil mist from inlet to vent. 2 A 1/4 NPS vent connection shall be provided on the housing or end cover for each of the spaces between the rolling element bearings and the housing shaft closures. Alternatively, where oil mist connections are between each housing shaft closure and the bearings, one vent central to the housing shall be supplied.

Where practical, the holes shall be accessible for grouting with the pump and driver installed on the baseplate. ) raised lip edges. 5 mm (16 gauge) shall be provided. ) in diameter shall be provided at the highest point in each bulkhead section of the baseplate. 16 The height of the pump shaft centerline above the baseplate shall be minimized. Adequate clearance shall be provided between the casing drain connection and the baseplate so that drain piping the same size as the connection can be installed without the use of a street (male-female) elbow.

The sound pressure level. e. The area classification, based on API Recommended Practice 500. f. The type of insulation. g. The required service factor. h. The ambient temperature and elevation above sea level. i. Transmission losses. j. Temperature detectors, vibration sensors, and heaters if these are required. k. Vibration acceptance criteria. l. Applicability of API Standard 541 or IEEE 841. Note: Vertical motors 750 kW (1000 hp) and larger that are equipped with spherical or taper roller bearings may require less than 25,000 hour L10h life to avoid skidding in normal operation.

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