NFPA 20 Electric Motor and Diesel Engine Drive End Suction Fire Pump

IS pump complies fully to the European Standard BS EN733 / DIN24255 of performance and dimensions. They are used for pumping clean water or liquids similar to water, achieving wide application in plants, mines, city water supplies, air-conditioning coolers, firefighting system and irrigation.

Pumps of the same model have different performance levels basing on different diameter after impeller trimming. Overall the whole series, there are only four sizes of shaft and five of bearing housing. As long as their bearing housings are of the same size, different pumps can interchange chief parts such as shaft, shaft sleeve, shaft seal, impeller nut, etc.

IS pump is also very easy to be installed and maintained. Back pull-out design, driven through flexible coupling, so that pump casing and motor can remain in position while other spare parts are removed.

Design

Performance and dimensions referring to BS EN733/ DIN24255.

Structure: Horizontal, Axial End-Suction, Single-Stage, Single-Suction, Volute Casing, Back pull-out, Centrifugal Pump

Flange: DIN2501 (ISO7005.2 / GB/T17241.6 PN1.6) standard, ANSI B16.5 Class150lb optional

Rotation: Clockwise viewing from the drive side

Material

Casing - Cast Iron standard, Ductile Iron, Stainless Steel optional

Impeller - Bronze standard, Cast Iron, Stainless Steel optional

Shaft - ASTM420 standard, ASTM304, ASTM316, ASTM1045 optional

Shaft Seal - Mechanical Seal standard (Carbon-Ceramic/Viton standard, Caron-Sic/Viton optional) ,Gland Packing optional

Flow Rate (Q): 2 - 1100m3/h

Head (H): 2 - 150m

Speed: 1450 or 2900 rpm (50Hz) 1750 or 3500 rpm (60Hz)

Temperature: -10℃ to 105℃

Working Pressure: 10 Bar standard, 16 Bar on request