The pump shall be reasonably easy to remove for maintenance.

The pump casing shall be furnished with a drilled and tapped drain opening.

Connection for seal flush lines shall be ³/ ₈ in. NFS or larger. Exception: Drilled or tapped openings in high velocity areas are not permitted if the specified corrosion allowance of the pump casing is more than ¹/ ₈ in. or if the pump is in acid or erosive service. Suction and discharge nozzles and stuffing boxes are not considered high velocity areas.

Non-pressurized oil-lubricated bearings shall have adjustable constant level oilers with transparent containers.

Wet sump or "purge mist" lubricated bearings. Typically sleeve bearings only. Verify correct oil level and orifice size.

Dry sump lubricated bearings, when specified, do not require constant level oilers. Verify correct orifice size.

Grease lubricated bearings, where specified, shall have accessible grease fittings. Verify accessible drain plug as well.

Seal glands shall be labeled to identify cooling, flushing, vent and drain connections.

Connections for seal oil and flush lines shall be ¹/ ₂ in. NPS or larger.

Flexible hose to the quench gland for conventional packing is not permitted.

Coupling guards shall be fabricated from 12-gauge, galvanized expanded sheet metal. Alternatively, guards shall be provided with hinged door for coupling inspection.

Centrifugal pump suction and discharge piping installation shall be as described below:

• All handwheels on block valves shall be reasonably...