“Davies” B1 Piston Pump – 300 Gallon

“Davies” B1 Piston Pump Spare Parts

The B series (Formally known as the Davies B Series) is a single cylinder double-acting piston pump especially adapted for open or pressure tank service. The enclosed type of crankcase is designed to meet a demand for a pump which has a minimum of exposed working parts, thereby securing maximum safety of operation as well as good lubrication. The pump is suitable where the vertical distance to the lowest water level does not exceed 7.6 metres (25 feet).

Davies B1 Standard – 300 Gallons per Hour (300 Gallon Pump)
Davies B1 High Pressure – 200 Gallons per Hour (200 Gallon Pump)
Davies B1 Low Pressure – 400 Gallons per Hour (400 Gallon Pump)

Maintenance Hints:
– Make sure the oil in the back end is at the correct level and hasn’t been contaminated with water
– Regularly bleed the pressure tank (if your system has one)
– Check the liner isn’t scored (as this will lower the performance of the pump)
– Check the plunger rod isn’t scored (as this indicates the pump may have run dry and the gland packing needs attention)

The gland should be checked periodically and tightened if necessary. Water should drip from the gland and if over tightened will increase wear on gland packing and plunger rod through lack of lubrication.
Check oil level regularly and change oil at least every 6 months. Belt tension should be checked one month after installation and six monthly thereafter.
We would recommend an annual service – although this can depend on the water quality and duty of the pump. McQuinn Pumps have engineers available to conduct annual servicing either on site or at the Service Centre based in Whangarei, Northland.

Please see below for a list of parts, and be sure to click the download button below it for the full PDF. The PDF Download has several pages of B1 Information & Maintenance tips.

B1 Service Kit

B1 Service Kit Contains

103 Cylinder Cover Gasket
110 Gland Packing
117 Air Chamber Gasket
118 Valve Post (4)
119 Valve Spring (4)
120 Valve Plate (4)
121 Rubber Valve (4)
134 Leather Cups (Size relates to model)
145 Cylinder Gasket with Ears
149 Cylinder Gasket