The Davies Pumps BSN series cast iron single impeller pumps are a DIN standard bare shaft pump designed for a wide
 range of applications where a separate power supply is beneficial.  There is a range of models suitable for a wide
 variety of applications up to 4000 l/min and 60m head pressure with specific impeller trims available to select
 optimum performance. Bare shaft pumps may be pulley driven at speeds up to 3600 RPM.
*POA for Impeller trim for Type B or C
Features:

• Liquid temperature not higher than 35 °C for domestic use (CEI EN 60335-2-41) or 90 °C for other use,
   while the ambient temperature must not be higher than 40 °C
• Flow rates up to 240 m3/h.
• Heads up to 100 m.

 
Technical Details:

• Pump body: cast iron G20 with an anti-corrosive coating
• Motor bracket: cast iron G20 with an anti-corrosive coating
• Orifices in/outlet: DIN 2532 standards
• Impeller: cast iron G20 with anti-corrosive coating
• Threaded counter flanges: galvanized steel complete with EPDM gaskets
• Pump shaft: stainless steel Aisi 304
• Mechanical seal: carbon-ceramic

 
2 YEARS WARRANTY

Dimensions And Specifications
Model	DNA	DNM	A	F	H1	H2	L1	L2	M1	M2	N1	N2	B	S1	W	D	I	U	T
BSN 40-125A	65	40	80	356	132	160	116.5	116.5	100	70	240	190	50	14	254	24	50	8	27
BSN 40-200A	65	40	100	356	160	180	140	140	100	70	265	212	50	14	254	24	50	8	27
BSN 50-125A	65	50	80	356	132	160	101.5	112	100	70	210	190	50	14	254	24	50	8	27
BSN 50-250A	65	50	100	360	180	225	166	170	125	95	320	250	65	14	254	24	50	8	27
BSN 65-125A	80	65	100	356	160	180	112	143	125	95	280	212	65	14	254	24	50	8	27
BSN 65-200A	80	65	100	365	180	225	147	168	125	95	320	250	65	14	258	24	50	8	27
BSN 80-160A	100	80	125	365	180	225	135	170	125	95	320	250	65	14	258	24	50	8	27
BSN 80-250A	100	80	125	470	200	280	195	218	160	120	400	315	80	18	340	32	80	10	35

 

FLANGE – FLANGES				HOLES MM
DN	K	D	B	Nº	Ø
32	100	140	18	4	18
40	110	150	18	4	18
50	125	165	19	4	18
65	145	185	19	4	18
80	160	200	22	4	18
100	180	220	24	8	18

 

Quick Selection Performance Table – 2900 RPM – 2 Pole
Model	Kw	M3/H L/M	0 0	6 100	12 200	18 300	24 400	30 50	36 600	42 700	48 800	60 1000	66 1100	78 1300	96 1600	132 2200	156 2600	180 3000	240 4000
BSN 40-125C	1.5	H (m)	17.5	18.0	18.3	17.5	16.0	13.5	11.0	9.0
BSN 40-125B	2.2		22.0	22.5	22.5	22.0	20.5	18.5	16.5	12.5
BSN 40-125A	3.0		26.5	27.5	27.5	26.5	25.5	23.7	21.5	17.5
BSN 40-200B	5.5		44.0	44.8	44.5	43.5	42.0	39.0	34.5	29.0	24.5
BSN 40-200A	7.5		54.5	55.0	55.0	54.8	53.8	51.5	48.0	43.0	36.5
BSN 50-125C	2.2		17.5	18.0	18.0	18.0	17.5	16.5	15.5	14.0	12.5
BSN 50-125B	3.0		22.5	22.5	22.5	22.0	21.5	20.5	19.5	18.5	17.0
BSN 50-125A	4.0		25.5	26.0	26.0	25.5	25.3	54.8	24.0	23.0	22.0
BSN 50-250C	15.0		73.0	74.0	75.0	75.0	75.0	74.5	72.5	71.5	70.0	65.0	62.0	54.0
BSN 50-250B	18.5		82.0	82.5	82.5	82.5	82.5	82.0	81.0	79.5	78.0	72.5	70.0	61.5
BSN 50-250A	22.0		89.5	90.5	91.0	91.0	90.5	90.0	89.0	88.0	86.5	80.5	78.0	69.5
BSN 65-125B	5.5		23.5	24.0	24.5	24.8	25.0	25.0	25.0	24.5	24.0	23.0	22.5	20.5	16.0
BSN 65-125A	7.5		26.0	26.3	26.5	26.8	27.0	27.0	26.8	26.6	26.4	26.0	24.5	23.0	18.5
BSN 65.-200C	15.0		44.5	45.0	45.5	46.0	46.5	46.5	46.5	46.5	46.5	46.0	45.8	45.0	42.5	34.5
BSN 65-200B	18.5		48.0	48.7	49.5	49.8	50.0	50.2	50.5	50.5	50.5	50.0	49.8	49.0	47.0	39.0
BSN 65-200A	22.0		52.5	53.0	53.5	53.8	54.0	54.5	54.7	54.8	54.8	54.5	54.0	53.5	52.0	44.5
BSN 80-160D	11.0		27.0	27.7	28.3	28.6	28.8	29.0	29.5	29.7	29.8	29.8	29.8	29.2	28.5	25.0	22.0
BSN 80-160C	15.0		32.0	32.5	33.0	33.3	33.5	34.0	34.5	34.7	34.5	34.5	34.5	34.2	33.5	30.5	27.5
BSN 80-160B	18.5		35.0	35.5	36.0	36.3	36.5	37.0	37.5	37.5	37.5	37.5	37.5	37.5	37.0	34.5	32.0
BSN 80-160A	22.0		39.0	39.3	39.5	39.8	40.0	40.5	41.0	41.0	41.0	41.5	41.5	41.2	40.5	38.0	36.5
BSN 80-250C	45.0		67.5	68.0	68.5	68.8	69.0	69.5	70.0	70.0	70.0	70.0	70.0	70.0	70.0	68.5	66.0	63.0	50.0
BSN 80-250B	55.0		82.0	82.7	83.5	83.8	85.0	86.0	86.5	87.0	87.0	88.0	88.0	88.0	87.5	86.0	83.5	81.0	70.0
BSN 80-250A	75.0		101.5	101.7	101.8	101.9	102.0	102.5	103.0	103.0	103.0	103.5	103.5	104.0	104.0	103.5	102.5	101.5	92.0

 

Quick Selection Performance Table – 1450 Rpm – 4 Pole
Model	Kw	M3/H L/M	0 0	3 50	6 100	9 150	12 200	15 250	18 300	21 350	24 400	30 500	36 600	42 700	51 850	66 1100	78 1300	90 1500	120 2000
BSN 40-125C	0.25		4.4	4.5	4.6	4.4	4.0	3.4	2.8
BSN 40-125B	0.25		5.5	5.6	5.6	5.5	5.1	4.6	4.1	3.1
BSN 40-125A	0.37		6.6	6.9	6.9	6.6	6.4	5.9	5.4	4.4
BSN 40-200B	0.75		11.0	11.2	11.1	10.9	10.5	9.8	8.6	7.3
BSN 40-200A	1.1		13.6	13.8	13.8	13.7	13.5	12.9	12.0	10.8	9.1
BSN 50-125C	0.37		4.4	4.5	4.5	4.5	4.4	4.1	3.9	3.5	3.1
BSN 50-125B	0.37		5.6	5.6	5.6	5.5	5.4	5.1	4.9	4.6	4.3
BSN 50-125A	0.55		6.4	6.5	6.5	6.4	6.3	13.7	6.0	5.8	5.5
BSN 50-250C	2.2		18.3	18.5	18.8	18.8	18.8	18.6	18.1	17.9	17.5	16.3	14.5
BSN 50-250B	3.0		20.5	20.6	20.6	20.6	20.6	20.5	20.3	19.9	19.5	18.1	16.6
BSN 50-250A	3.0		22.4	22.6	22.8	22.8	22.6	22.5	22.3	22.0	21.6	20.1	18.5
BSN 65-125B	0.75		5.9	6.0	6.1	6.2	6.3	6.3	6.3	6.1	6.0	5.8	5.4	4.8	3.5
BSN 65-125A	1.1		6.5	6.5	6.6	6.7	6.8	6.8	6.7	6.7	6.6	6.5	5.9	5.4	4.3
BSN 65-200C	2.2		11.1	11.3	11.4	11.5	11.6	11.6	11.6	11.6	11.6	11.5	11.4	11.1	10.4	8.6
BSN 65-200B	2.2		12.0	12.2	12.4	12.5	12.5	12.6	12.6	12.6	12.6	12.5	12.4	12.1	11.5	9.8
BSN 65-200A	3.0		13.1	13.3	13.4	13.5	13.5	13.6	13.7	13.7	13.7	13.6	13.4	13.3	12.8	11.1
BSN 80-160D	1.5		6.8	7.0	7.1	7.2	7.2	7.3	7.4	7.4	7.5	7.5	7.4	7.3	7.0	6.3	5.5
BSN 80-160C	2.2		8.0	8.2	8.3	8.3	8.4	8.5	8.6	8.7	8.6	8.6	8.6	8.5	8.3	7.6	6.9
BSN 80-160B	3.0		8.8	8.9	9.0	9.1	9.1	9.3	9.4	9.4	9.4	9.4	9.4	9.3	9.1	8.6	8.0
BSN 80-160A	4.0		9.8	9.9	9.9	10.0	10.0	10.1	10.3	10.3	10.3	10.4	10.4	10.3	10.0	9.5	9.1
BSN 80-250C	4.0		16.9	17.0	17.1	17.2	17.3	17.4	17.5	17.5	17.5	17.5	17.5	17.5	17.5	17.1	16.5	16.8	12.5
BSN 80-250B	5.5		20.5	20.7	20.9	21.1	21.3	21.5	21.6	21.8	21.8	22.0	22.0	22.0	21.9	21.5	20.9	20.3	17.5
BSN 80-250A	7.5		25.4	25.5	25.5	25.5	25.5	25.6	25.8	25.8	25.8	25.9	26.0	26.0	26.1	25.9	25.6	25.4