AISI 304
4” submersed centrifugal pumps built entirely in AISI 304 stainless steel.
Suitable for coupling to 4" motors in compliance with NEMA Standards.
Suitable for domestic, agricultural and industrial water supply systems,pressure boosting, fire-fighting plants,irrigation, washing, moving clear water in general, reliable and strong, corrosion-proof, exceptional efficiency due to the smooth surfaces of the impellers and nozzles.
• The pumps can be supplied as follows:
- 4BHS pump plus OY motor in bath of liquid refrigerant
- 4BHS pump plus WY motor in waterbath
The pump and the motor are supplied separately.

Specifications

• Maximum immersion: 150 m
• Maximum temperature of the liquid: 30°C
• Maximum sand content: 50 ppm

Materials

• Motor discharge and support sleeve in moulded stainless steel
• Support, inlets, joint, impeller, nozzle, valve, stages, tie-rod and
isolating cover in AISI 304
• Wear rings in EPDM/AISI 304 and shaft in AISI 316
• Radial bearings, axial bearings and friction ring in tungsten carbide

Technical document

Both motors have the following features:
• 2 pole motor in bath of liquid refrigerant (OY)
or in water bath (WY)
• Max start-ups per hour: 30
• Quick coupling for power supply cable
• Class of insulation F (OY version) or B (WY version)
• IPX58 Protection rating
• 230V (+6 -10%) 50 Hz single phase voltage (OYM version),
400V (+6 -10%) 50 Hz three phase voltage (OY version)
• 230V ± 6% 50 Hz single phase voltage (WYM version),400V ± 6%
50 Hz three phase voltage (WY version)
• G1 ¼ discharge connection (4BHS 2), G1 ½ (4BHS 4),
• G2 (4BHS 7-4BHS 15)

Total head [m3/h]	min	0.90	max	18.00
Total head [m]	max	260.00	min	9.10