Tohkemy Low-Pressure, Large-Capacity Pump

This chemical dosing pump is suitable for high flow rates at low discharge pressures of 0.3 MPaG or less.
Compared with the CM-L series, it provides a higher flow rate with lower motor power.

Power source specification

Various power source motors lined up as standard and semi-standard.
・200V　 ・220V　 ・380V　 ・400V　 ・415V　 ・420V　 ・440V

Possible to be supported with different voltage and explosion proof type.
Please contact to confirm us about delivery terms.

Outdoor specifications

Totally-enclosed fan-cooled (TEFC) outdoor flange type motor.

Coupling-Mounted Motor Option

The pump can be coupled to an increased-safety explosion-proof motor, a pressure-resistant explosion-proof motor, or another specified motor.

Optional Double-Diaphragm Protection

The standard pump uses a single diaphragm. An optional double-diaphragm design helps protect the reduction gear from corrosive fluid if the primary diaphragm is damaged.

●Applicable models: CM-27R, CM-34R, CMD-54R, and CMD-68R (except the V4U6 combination)

Air chamber included as standard.

Model	Flow rate (L/min) at 0.1MPaG		Max. flow 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)
	60Hz	50Hz	60Hz	50Hz				60Hz	50Hz
CM-4R	0.8 – 4	0.7 – 3.3	3.6	3	0.5	120		170 /(1:10)	140 /(1:10)	6.5	20A		0.2/4P	20/26	3B×400
CM-6R	1.2 – 6	1 – 5	5.2	4.4		140					25A			22/30	4B×400
CM-9R	1.8 – 9	1.5 – 7.5	7.6	6.3						10			0.4/4P	31/39
CM-14R	2.8 – 14	2.4 – 12	13	11	0.3	160					40A			32/45	4B×600
CM-16R	3.2 – 16	2.7 – 13	14	12						12
CM-22R	4.4 – 22	3.6 – 18	20	17		180							0.75/4P	39/54	6B×600
CM-27R	5.4 – 27	4.4 – 22	25	21		200								42/59
CM-34R	6.8 – 34	5.6 – 28	32	26		220					50A			45/65	8B×600
CMD-32R	3.2 – 32	2.7 – 26	28	24		160	Double-head				40A	Double-head	0.4/4P	42/68	4B×600	Double-head
CMD-44R	4.4 – 44	3.6 – 36	40	33		180							0.75/4P	51/82	6B×600
CMD-54R	5.4 – 54	4.4 – 44	51	42		200								55/90
CMD-68R	6.8 – 68	5.6 – 56	63	53		220					50A			62/110	8B×600

●The flow 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 to 0.4kW: Three-phase, 4P, class E, 60Hz (200, 220V), 50Hz (200V), TEFC outdoor flange type
		0.75 kW: Three-phase, 4P, class F, 60Hz (200, 220V), 50Hz (200V), TEFC outdoor flange type
	Semi-standard	0.2 and_ 0.4kW: Three-phase, 4P, class E, 60Hz (400, 440V), 50Hz (400V), TEFC outdoor flange type
		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 (washer with 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	VVYY	VVC	4446	V4U6
Applicable chemicals	Polymer flocculants, Sodium hydroxide, Ammonia water	Ferric chloride, PAC, Sodium hypochlorite, Aluminum sulfate, Ferrous sulfate, Ferric sulfate, Hydrochloric acid Dilute sulfuric acid, Chromic 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, sheet	PVC			SUS304
Check ball	SUS304	Hastelloy C	Ceramics	SUS304	Urethane
O-ring	Aflas®			PTFE	Aflas®
Spring	SUS316	Hastelloy C	–	SUS316

●Take this table as a general guide, because the material corrosion depends on liquid temperature and concentrations. Other combinations of materials than above are also available.
●Aflas® is a registered trademark of AGC Inc.

Viscosity of fluid

Refer to the chart below for transferring high-viscous fluid such as Polymer flocculants.

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

※ The pump flow rate varies depending on the liquid viscosity _and slurry. Please note that the pump performance values are based on data with clean water. When using a viscous liquid, please use a press-in piping.

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%

Pump dimensions

Liquid-end parts construction