Tohkemy CM-L Chemical Pump

Manufacturer: Tohkemy Corporation
Model: CM-L

Features

Tohkemy Low-Pressure, High-Capacity Pump
Designed for high discharge volume at low pressure ( $\le$ 0.3 MPaG), offering higher flow rates with lower power consumption than the CM-L series.
Motor & Power Specifications
Standard / Semi-standard Voltages: 200V, 220V, 380V, 400V, 415V, 420V, 440V. Custom voltages and explosion-proof types available upon request (contact sales for delivery terms).
Outdoor Enclosure: TEFC outdoor flange-type motor standard.
Coupling Connection: Allows integration of increased-safety explosion-proof, flameproof/pressure-proof, or custom-specified motors.
Double Diaphragm Protection (Option)
Prevents corrosive liquid leaks from reaching reduction gears in case of primary diaphragm failure.
Applicable Models: CM-27R, CM-34R, CMD-54R, CMD-68R (excludes V4U6 combination).

Specification

Model	Discharge rate(L/min) At 0.1MPaG		Max. discharge rate at the max. discharge pressure (L/min)		Max. discharge pressure (MPaG)	Diameters of Pump head / Diaphragm (mm)		Stroke frequency (spm) / Reduction ratio		Max. stroke length (mm)	Connection flange (JIS 10K)		Motor (kW/pole)	Weight (kg) (PVC/SUS)	Air chamber φ×L(mm)
Model	60Hz	50Hz	60Hz	50Hz	Max. discharge pressure (MPaG)	Diameters of Pump head / Diaphragm (mm)		60Hz	50Hz	Max. stroke length (mm)	Connection flange (JIS 10K)		Motor (kW/pole)	Weight (kg) (PVC/SUS)	Air chamber φ×L(mm)
CM-1L	0.3-1.4	0.2-1.2	1.3	1.1	0.7	120		56/1:30	47/1:30	6.3	20A		0.2/4P	20/26	3^B×400
CM-2L	0.5-2.4	0.4-2.0	2.1	1.8	100/1:16	80/1:16	6.5		CM-3L		0.7-3.6	0.6-3.0	3.3	2.8	140
108/1:16	89/1:16	25A		22/30	4^B×400		CM-6L		1.2-6.0	1.0-5.0	5.2	4.4	10	0.4/4P	31/39
CM-9L	1.8-9.0	1.5- 7.5	8.2	6.8	0.5	160		40A		32/45	4^B×600		CM-13L		2.6- 13	2.2- 11
12	10	180		12	0.75/4P	39/54	CM-17L		3.4- 17	2.8- 14	16	13	200		42/58	6^B×400

The discharge rate was calculated at discharge pressure of 0.1MPaG, suction head of -0.01MPaAq equivalent to the same pipe diameter as in the pump; and_ normal temperature using clear water.
When your pump is of the standard specifications, use it in the ambient temperature range of 0-40℃, the liquid temperature range of 0-50℃ and_ about 0.06MPaA (0.6kgf/cm2A) of NPSH req.
Common specifications

Motor	Standard	0.2 _and 0.4kW: Three-phase, 4P, class E, 60Hz (200, 220V), 50Hz (200V), Totally-enclosed external fan outdoor flange type
	Standard	0.75 kW: Three-phase, 4P, class F, 60Hz (200, 220V), 50Hz (200V), Totally-enclosed external fan outdoor flange type
	Semi-standard	0.2 _and 0.4kW: Three-phase, 4P, class E, 60Hz (380, 400, 440V), 50Hz (380, 400, 415, 420V), Totally-enclosed external fan outdoor flange type
	Semi-standard	0.75kW: Three-phase, 4P, class F, 60Hz (380, 400, 440V), 50Hz (380，400, 415, 420V), TEFC outdoor flange type
Reducer		Planetary gear speed reducer, lubricated with molybdenum grease
Standard accessories		Air chamber, Simple tools, Mounting bolts _and nuts (w/washer M8 x 30L) x 4 sets, Instruction manual
Color		Munsell 2.5PB 2.5/7 for reducer, Munsell N7 for motor

Liquid-end parts specifications

Part name / combination	VV46	VVC	4446	V4U6
Applicable chemicals	Polymer coagulant, Sodium hydroxide, Ammonia water	Ferric chloride, PAC, Sodium hypochlorite, Aluminum sulfate, Ferrous sulfate and ferric sulfate, Dilute sulfuric acid, Hydrochloric acid	Methanol, Organic solvent solution	Slaked lime, Sludge, Powdered activated carbon (solution)
Pump head	PVC		SUS304	PVC
Diaphragm	PTFE			Urethane/PTFE
Valve case	PVC		SUS304	PVC
Valve guide, seat	PVC		SUS304
Check ball	SUS304	Ceramics	SUS304	Urethane
O-ring	Afras		PTFE	Afras
Spring	SUS316	–	SUS316

The corrosion resistance of the material changes depending on the temperature and concentration, so the above usage example is a guide. Material combinations other than the above are also possible.
Afras is a type of fluororubber.
Viscosity of fluid

Model/Combination	Viscosity
CM-L	1000mPa・s max.

Simple comparison table for large-capacity diaphragm pumps

Model	Stroke frequency (spm)	Normal pressure (MPaG)	Discharge accuracy	Air chamber
R type	170/140(60/50Hz)	0.2-0.3	±5%	Necessary
L type	56-108/47-89(60/50Hz)	0.3-0.5	±2%	Necessary

When using with low discharge pressure, large motor power is required, so we recommend the large series CM-R.
If the air chamber is not installed, calculate the acceleration resistance.
Pump dimensions
CM-4R・6R　1L～3L

Model	φA	B	C	D	E
CM-1L	120	99	141	380	20A JIS10KFF
CM-4R			151
CM-2L			151
CM-6R	140	118	155		25A JIS10KFF
CM-3L	140	118	155		25A JIS10KFF

P/N	Part name
1	Motor
2	Reducer
3	Liquid-end parts
4	Flow rate control dial
5	Dial set bolt
6	Pump base

CM-9R～34R　6L～17L

Model	φA	B	C	D	F
CM-9R,6L	140	118	210	440	25A JIS10KFF
CM-14R,16R,9L	160	151(141)	215	440	25A JIS10KFF
CM-22R,13L	180	162(152)		480	40A JIS10KFF
CM-27R,17L	200	173(163)			40A JIS10KFF
CM-34R	220	206(184)	220		50A JIS10KFF

Figures in parentheses are only applicable to VVC combination.

P/N	Part name
1	Motor
2	Reducer
3	Liquid-end parts
4	Flow rate control dial
5	Dial set bolt
6	Pump base

CMD-32R～68R

Model	φA	B	C	D	F
CMD-32R	160	151(141)	215	440	40A JIS10KFF
CMD-44R	180	162(152)		440
CMD-54R	200	173(163)		480
CMD-68R	220	206(184)	220	480	50A JIS10KFF

Figures in parentheses are only applicable to VVC combination.

P/N	Part name
1	Motor
2	Reducer
3	Liquid-end parts
4	Flow rate control dial
5	Dial set bolt
6	Pump base

Liquid-end parts construction

P/N	Part name
1	Discharge-side valve case
2	Valve guide
3	Valve seat
4	Check ball
5	O-ring
6	O-ring
7	Pump head mounting bolt
8	Pump head
9	Diaphragm lock nut
10	Suction side valve seat
11	Connection flange
12	Diaphragm
13	Diaphragm washer
15	Sub-ring
20	Diaphragm seat
21	Spring