One-Stop Water Treatment Solutions Provider

search

DE
FR
ES
PT
IT
FIL
TR
RU
AR
VI

Home Parts SEKO Dosing Pump CategorySEKO Mechanical Diaphragm Dosing Pump

SEKO Mechanical Diaphragm Dosing Pump

SEKO Dosing Pump

SEKO Mechanical Diaphragm Dosing Pump

SEKO Mechanical Diaphragm Dosing Pump for Precise Chemical Dosing

The SEKO mechanical diaphragm dosing pump is an economical, efficient, precise, and durable dosing solution suitable for medium and low-pressure applications. It is widely used in water treatment, chemical, power, and other industries. The Kosmo series features a mechanically actuated diaphragm with a liquid end box and mechanical return system, delivering a maximum flow rate of up to 2300 L/h. The MS1 Series is equipped with a spring-return mechanical device and an aluminum housing, providing a maximum flow rate of up to 1200 L/h. The MSA series incorporates a spring-return mechanical device and a PPS housing, a built-in dual-cam system, offering smooth, quiet operation and highly accurate flow delivery.

Specification
Videos

Specification

Kosmo Series MM2 – mechanical diaphragm liquid end + mechanical return device
Kosmo Series MM1 – mechanical diaphragm liquid end + mechanical return device
MS1 series – spring-return mechanical device + aluminum housing
MSA Series – spring-return mechanical device + pps housing

Kosmo Series MM2

Flow range: 80–2300 L/h
Maximum pressure: 10 bar
Stroke frequency: 43/86/131/175 cycles/min
Stroke length: 7/8/9/15 mm
Diaphragm diameter: 124/140/157/179 mm
Motor power: 0.55/0.75/1.1 kW
Pump head material: SS316L, PVC, PVDF
Maximum medium temperature: 40 °C

Specifications

Read MoreRead Less

Table 1: Kosmo Series MM2 Specifications
Model	Diaphragm Diameter (mm)	Stroke Length (mm)	Stroke Frequency (cycles/min)	Flow Rate (L/h)	Maximum Pressure (bar)	Connection Size			Power (kW)	Weight (kg)
Model	Diaphragm Diameter (mm)	Stroke Length (mm)	Stroke Frequency (cycles/min)	Flow Rate (L/h)	Maximum Pressure (bar)	SS316L	PVC	PVDF	Power (kW)	SS316L, PVC, PVDF
MM2F124D**C40800	124	7	43	80	10	G 3/4"	DN20	G 3/4" (PVDF) DN20 (PVC)	0.55/4	56
MM2F124E**C40800			86	180
MM2F124F**C40800			131	250
MM2F124G**C40800			175	350
MM2G124G**C40800		8		450
MM2F140G**C40800	140	7		500	7	G 1"	DN25	G 1" (PVDF) DN25 (PVC)		60
MM2G140G**C40800	140	8		600	7
MM2H157F**C40800	157	9	131	720	4
MM2H157G**C40800	157		175	1000
MM2H179G**D40800	179		175	1200		G 1-1/2"	DN40	G 1-1/2" (PVDF) DN40 (PVC)	0.75/4	68
MM2I179F**D40800		15	131	1600					0.75/4
MM2I179G**E40800		15	175	2300					1.1/4
Note: ** Indicates three optional pump head materials: SS316L (21/24), PVC (31/34), and PVDF (41/44). In addition to the standard motor, customers may also select a variable frequency motor or an explosion-proof motor. The above flow rates are measured with water as the medium at 20 °C and a motor frequency of 50Hz. If the motor frequency is 60Hz, the corresponding flow rate should be calculated as 1.2 times.

Installation Dimensions

Read MoreRead Less

Table 2: Kosmo Series MM2 Installation Dimensions
Pump Head Material		PVC	PVDF	SS316L
Diaphragm diameter: 124 mm	Connection Size	DN20	G 3/4" F	G 3/4" F
	A	293	293	216
	B	89	89	85
	C	372	372	357
Diaphragm diameter: 140 mm	Connection Size	DN25	G 1" F	G 1" F
	A	316	316	251
	B	92	92	95
	C	377	377	378
Diaphragm diameter: 157 mm	Connection Size	DN25	G 1" F	G 1" F
	A	334	334	295
	B	98	98	98
	C	379	379	381
Diaphragm diameter: 179 mm	Connection Size	DN40	G 1-1/2" F	G 1-1/2" F
	A	424	424	382
	B	104	104	117
	C	395	395	407

Kosmo Series MM1

Flow range: 5–530 L/h
Maximum pressure: 12 bar
Stroke frequency: 58/78/116/156 strokes/min
Stroke length: 2/4/6.4/7.4 mm
Diaphragm diameter: 65/96/124/140 mm
Motor power: 0.25/0.37 kW
Pump head material: SS316L, PVC, PVDF
Maximum medium temperature: 40 °C

Specifications

Read MoreRead Less

Table 3: Kosmo Series MM1 Technical Specifications
Model	Diaphragm Diameter (mm)	Stroke Length (mm)	Stroke Frequency (cycles/min)	Flow Rate (L/h)	Maximum Pressure (bar)	Connection Size			Power (kW)	Weight (kg)
Model	Diaphragm Diameter (mm)	Stroke Length (mm)	Stroke Frequency (cycles/min)	Flow Rate (L/h)	Maximum Pressure (bar)	SS316L	PVC	PVDF	Power (kW)	SS316L, PVC, PVDF
MM1A065A**A40800	65	7	58	3.0	12	G 1/4"	8 × 12 PE Hose	8 × 12 PE Hose	0.25/4	16
MM1A065B**A40800			78	4.5
MM1A065C**A40800			116	9
MM1A096C**A40800	96		116	22		G 3/8"	DN10	G 3/8" (PVDF) DN10 (PVC)
MM1C096B**A40800		4	78	53	10
MM1C096C**B40800			116	85	7				0.37/4
MM1C096B**B20800			156	115					0.37/2
MM1D124B**B40800	124	6.4	78	170		G 3/4"	DN20	G 3/4" (PVDF) DN20 (PVC)	0.37/4	20
MM1D124C**B40800			116	242					0.37/4
MM1D124B**B20800			156	340	5				0.37/2
MM1E140C**B40800	140	7.4	116	400		G 1"	DN25	G 1" (PVDF) DN25 (PVC)	0.37/4
MM1E140B**B20800	140	7.4	156	530		G 1"	DN25	G 1" (PVDF) DN25 (PVC)	0.37/2
Note: ** Indicates three optional pump head materials: SS316L (21/24), PVC (31/34), and PVDF (41/44). In addition to the standard motor, customers may also select a variable frequency motor or an explosion-proof motor. The above flow rates are measured with water as the medium at 20 °C and a motor frequency of 50Hz. If the motor frequency is 60Hz, the corresponding flow rate should be calculated as 1.2 times.

Installation Dimensions

Read MoreRead Less

Table 4: Kosmo Series MM1 Installation Dimensions
Pump head material		PVC	PVDF	SS316L
Diaphragm diameter: 65 mm	Connection Size	8 × 12	8 × 12	G 1/4" F
	A	166	166	175
	B	104	104	108
	C	303	303	294
Diaphragm diameter: 96 mm	Connection Size	DN10	G 3/8" F	G 3/8" F
	A	222	222	167
	B	108	108	107
	C	301	301	293
Diaphragm diameter: 124 mm	Connection Size	DN20	G 3/4" F	G 3/4" F
	A	293	293	216
	B	118	118	113
	C	322	322	306
Diaphragm diameter: 140 mm	Connection Size	DN25	G 1" F	G 1" F
	A	316	316	251
	B	119	119	120
	C	323	323	319

MS1 Series

Flow range: 5.5–1200 L/h
Maximum pressure: 10 bar
Stroke frequency: 58/78/116/232 cycles/min
Diaphragm diameter: 64/ 165 mm
Motor power: Standard power 0.18/0.25/0.37/0.55 kW
Stroke length: 2/4/6 mm
Maximum medium temperature: 40 °C

Specifications

Read MoreRead Less

Table 5: MS1 Series Specifications.
Model	Diaphragm Diameter (mm)	Stroke Length (mm)	Stroke Frequency (cycles/min)	Flow Rate (L/h)	Maximum Pressure (bar)		Connection Method.		Power (kW)	Weight (kg)
Model	Diaphragm Diameter (mm)	Stroke Length (mm)	Stroke Frequency (cycles/min)	Flow Rate (L/h)	SS316L	PVC, PVDF	SS316L	PVC, PVDF	Power (kW)	SS316L	PVC, PVDF
MS1A064A	64	2	58	5.5	10	10	1/4" G F	1/4" G F DN15	0.18 (A)	15	13
MS1A064B			78	8
MS1A064C			116	11
MS1A094A	94		58	20			3/8" G F	3/8" G F DN15	0.25 (B)	16	14
MS1A094B			78	26
MS1A094C			116	40
MS1B108A	108	4	58	60					0.37 (C)	19	16
MS1B108B			78	80
MS1B108C			116	120
MS1C138A	138	6	58	155	7	7	3/4" G F	3/4" G F DN20		23	18
MS1C138B			78	220			3/4" G F	3/4" G F DN20
MS1C138C			116	310			1" G F	1" G F DN25
MS1C165A	165		58	230	5	5				27	21
MS1C165B			78	330	5	5
MS1C165C			116	530	4	4
MS1C138Q	138		232	750	4.5	4.5			0.55 (W)	25	20
MS1C165Q	165		232	1200	2	2			0.55 (W)	29	23

Installation Dimensions

Read MoreRead Less

Table 6: Kosmo Series MS1 Installation Dimensions.
Wetted End Material.	Plunger Diameter (mm).	A (mm)	B (mm)	C (BSP)	T (mm)	Three-phase					Single-phase
Wetted End Material.	Plunger Diameter (mm).	A (mm)	B (mm)	C (BSP)	T (mm)	Motor Power (kW).	Motor Dimensions	D (mm)	E (mm)	F (mm)	Motor Power (kW).	Motor Dimensions	D (mm)	E (mm)	F (mm)
SS316L (21)	64	192	144	1/4" F	98	0.18	63 B14	333	321	146	0.25	71 B14	371	343	155
	94	172	146	3/8" F	118	0.25	71 B14	371	335	165	0.37	71 B14	371	346	165
	108	213	148	3/8" F	138	0.37			337	175	0.55	80 B14	396	379	184
	138	261	158	3/4" F–1" F	168				352	190				394	199
	165	297	165	1" F	188				372	200				414	209
PVC (31), PVDF (41)	64	239	149	1/4" F	98	0.18	63 B14	333	326	146	0.25	71 B14	371	348	155
	94	242	144	3/8" F	124	0.25	71 B14	371	340	168	0.37	71 B14	371	351	168
	108	250	147	3/8" F	142	0.37			343	177	0.55	80 B14	396	385	186
	138	347	159	3/4" F–1" F	166				364	189				406	198
PVC (31), PVDF (41)	165	375	172	1" F	195				372	214				414	223

MSA Series

Flow range: 10–120 L/h
Maximum pressure: 5 bar
Stroke frequency: 30/50/100/150/166 strokes/min
Diaphragm diameter: 70 mm
Stroke length: 4/5/7 mm

Specifications

Read MoreRead Less

Table 7: MSA Series Specifications
Model	Diaphragm Diameter (mm)	Stroke Length (mm)	Stroke Frequency (cycles/min)	Flow Rate (L/h)	Maximum Pressure (bar)		Connection Method.		Power (kW)	Weight (kg)
Model	Diaphragm Diameter (mm)	Stroke Length (mm)	Stroke Frequency (cycles/min)	Flow Rate (L/h)	SS316L	PVC	SS316L	PVC	Power (kW)	SS316L	PVC, PVDF
MSAF070P	70	30	4	10	5	5	3/8" G F	8 × 12 (Standard) DN15 (Optional)	0.06 (X)	11	8
MSAF070O		50		20
MSAF070N		100		40
MSAF070M		150		60
MSAF070R		166	5	90
MSAH070R		166	7	120	3	3