
| P/N | Part name |
|---|---|
| 1 | Union nut |
| 2 | Discharge valve |
| 3 | Pump head |
| 4 | Air extract valve |
| 5 | Air extract nozzle |
| 6 | Suction valve |
| 7 | Diaphragm |
| 8 | Back plate |
| 9 | Grip ring |
| 10 | Hose nozzle |
| 11 | O-ring |
| 12 | Valve ball |
| 13 | Valve seat |
| 14 | Gasket |
Pump Dimensions


Manufacturer: Tohkemy Corporation
Model: MP-L
Common
<Applicable for high discharge pressure > (MP-L30P/N)
Max. discharge pressure is 1.6MPa. It enables a continuous injection to injection point at 1.0MPa of back pressure.
<Compatible with various control signals >
It is compatible with “contact signal (pulse) input” and “analog signal (0/4~20mA) input” to enable automatic operation mode, and various operation modes with remote ON/OFF, batch operation and special operation function.
* Optional control cable is necessary.
Standard type / Non-gas lock type
<MP-L30/60/200P (Standard type)>
Adoption of Highly Corrosion-Resistant Resin (PVDF) Heads
Highly functional resin PVDF (polyvinylidene fluoride), which is resistant not only to general chemical solutions but also to acids and alkalis, is used for the pump head and fittings.
Manual air extract function is standard equipment
Air in liquid-end parts is easily extracted by rotating the air extract valve even while pump operation.
<MP-L30/60N (Non-gas lock type)>
The most suitable for injection of bubble generating chemicals such as Sodium hypochlorite, etc.
Reliable air extract function
Quantitative injection without gas lock by air extract function in liquid-end parts working automatically even for chemical liquids prone to bubble formation.
Acrylic pump head: liquid moving in the pump head is visible
Generation of the gas lock (air lock) and discharge status can be checked from outside.
Manual operation mode
Select ON/OFF and stroke frequency (0 to 180spm) on the operation panel of pump body. By means of control cable, it is externally operatable by ON/OFF signal from outside without pump power off. (Remote ON/OFF function)

Digital Input (Pulse) Mode
Function: Automatically controls pump stroke count via external pulse signals (e.g., pulse-output flow meters).
Operation Modes (n=0.01 to 99.99):
Synchronized: 1 input pulse = 1 stroke.
Multiplication (1:n): Increases strokes relative to inputs.
Division (n:1): Decreases strokes relative to inputs.
Memory Function: Stores incoming pulse signals during operation (ON/OFF selectable).

Analogue input operation mode
The number of strokes is proportionally controlled in response to an external analog signal (0/4–20 mA).

Used to inject various chemical solutions such as water treatment chemicals, acidic agents, and alkaline solutions.
For chemical injection in physical and chemical sciences, and medical field
Designed for chlorine disinfection in small-scale water supply systems and swimming pools.
For injection of boiler chemicals
Suitable for injecting nutrient solutions and disinfectants across hydroponic farms and livestock barns.
Model / Specifications
| Model | Normal discharge pressure | Max. discharge pressure | Stroke frequency [spm] | Protective structure | power- consumption | Max. current value | Operating ambient temperature | Weight | ||
|---|---|---|---|---|---|---|---|---|---|---|
| Discharge rate (mℓ/min) | Discharge pressure (MPa) | Discharge rate (mℓ/min) | Discharge pressure (MPa) | |||||||
| MP-L30P | 41 | 0.8 | 35 | 1.6 | 0-180 | IP65 | 17W | 3.6A | -10~45℃ | Approx. 2.9kg |
| MP-L30N | 29 | 0.8 | 23 | 1.6 | ||||||
| MP-L60P | 70 | 0.25 | 65 | 0.5 | ||||||
| MP-L60N | 50 | 0.25 | 43 | 0.5 | ||||||
| MP-L200P | 240 | 0.1 | 200 | 0.2 | ||||||
Common specifications
Manual operation, various control operation functions
Stroke frequency adjustment: 0 to 180 spm (stroke frequency / min)
Stroke length adjustment: 0 to 100%
(The recommended stroke length adjustment – MP-L30/60/200P: 30% or more / MP-L30/60N: 50% or more)
Power source: AC 100 to 230V (+/-10%) 50/60 Hz
Performance curve


| P/N | Part name |
|---|---|
| 1 | Union nut |
| 2 | Discharge valve |
| 3 | Pump head |
| 4 | Air extract valve |
| 5 | Air extract nozzle |
| 6 | Suction valve |
| 7 | Diaphragm |
| 8 | Back plate |
| 9 | Grip ring |
| 10 | Hose nozzle |
| 11 | O-ring |
| 12 | Valve ball |
| 13 | Valve seat |
| 14 | Gasket |
Pump Dimensions

| MP-L30P・60P・200P Standard type | MP-L30N・60N Non-gas lock type | |||
|---|---|---|---|---|
| Applicable chemicals | Ferric chloride, PAC, Sodium hypochlorite, Aluminum sulfate, Ferrous sulfate, Ferric sulfate | Hydrochloric acid / Dilute sulfuric acid / Nitric acid / Other strong acids | Sodium hydroxide | Bubble generating solutions such as sodium hypochlorite, etc. |
| Pump head | PVDF | Acryl | ||
| Valve | PVDF | PVC | ||
| Valve seat | PVDF | Special fluoro rubber | ||
| Check ball | Ceramic | Ceramic | ||
| Valve spring | - | Hastelloy C | ||
| Gasket | PTFE | Special fluoro rubber | ||
| O-ring | PTFE | Special fluoro rubber | ||
| Diaphragm | Liquid end surface PTFE (Back surface EPDM) | Liquid end surface PTFE (Back surface EPDM) | ||
| Hose spec | MP-L30P/60P :φ4×φ9mm, bladed soft PVC hose MP-L200P :φ6×φ11mm, bladed soft PVC hose | MP-L30P/60P :φ4×φ6mm, polyethylene hose MP-L200P :φ6×φ9mm, polyethylene hose | φ4×φ9mm, bladed soft PVC hose | |
* Please feel free to contact us if you have any inquiries of hose selection.
* The hose spec. φ6 x 11mm Tetron braded soft PVC hose or φ6 x 9mm PE hose for MP-L200P
| Model / Connection | Viscosity |
|---|---|
| MP-L30P・60P・200P | 0~200mPa・s |
| MP-L30N・60N | 0~50mPa・s |
※ Please note that the pump discharge volume may vary due to liquid viscosity and the influence of slurry. The pump performance values are based on data obtained with clean water. When using viscous liquids, please operate with a press-in piping.
Model
| 30・60・200P | Standard type PVDF/PTFE |
|---|---|
| 30・60N | Non-gas lock type Acryl/PVC/PTFE |
Hose connection
| P4(P6) | φ4 x 6mm (φ6 x 9) Polyethylene hose |
|---|---|
| V4(V6) | φ4 x 9mm (φ6 x 11) Tetron braded soft PVC hose |
※φ6×9・φ6×11:MP-L200P
Standard accessories
Power cable 2m
Hose 3m
Check valve
Foot valve
M4 mounting bolt and nut x 2
Instruction manual
Optional accessories
Control cable 2-core / 5-core (2m, 5m, 10m)
Spring check valve (PVDF)
Anti-siphonage valve (PVC)
Copyright © Kouei Japan Trading | Get Quotation