Membranes
OBL MB Series Dosing Pump Supplier Indonesia
PT Watermart Perkasa supplies OBL MB Series dosing pumps in Indonesia for WTP, WWTP, and industry, with flow, pressure, material, and control guidance.
Which OBL MB Series dosing pump fits a water-treatment duty?
PT Watermart Perkasa supplies OBL dosing pumps in Indonesia through water.co.id for chemical injection in WTP, WWTP, and industrial process systems. The MB Series uses a mechanical diaphragm; select a model by matching required flow, injection pressure, wetted-part compatibility, connections, control method, and suction conditions—not nominal capacity alone.
| Dosing requirement | OBL series to compare | Initial decision boundary |
|---|---|---|
| Routine dosing up to 155 L/h and 12 bar | MB Series, mechanical diaphragm | Match the duty point to the model curve, then check head material and suction conditions. |
| Higher-capacity mechanical-diaphragm duty | M Series, up to 1,500 L/h and 12 bar | Check turndown, motor, connections, and actuator needs at operating pressure. |
| High pressure or more viscous liquid | R Series, plunger up to 100 bar | Evaluate sealing, fluid safety, and back-pressure requirements before choosing a plunger pump. |
| Diaphragm containment at higher pressure | XRN Series, hydraulic diaphragm up to 40 bar | Confirm relief protection, wetted-part material, and actual system pressure. |
The figures in this table follow the linked technical documents, accessed on 16 July 2026. Request the latest revision and the capacity curve at operating pressure before procurement. To shortlist a model, provide the chemical name and concentration, required L/h, line pressure, temperature, material, control signal, voltage, and duty cycle through Watermart’s contact page. See the Watermart dosing-pump category and, when the project also needs a chemical program, Beta Pramesti’s industrial water-treatment solutions.
OBL MB Series Mechanical Diaphragm Metering Pumps
OBL MB Series Mechanical Diaphragm Metering Pumps are chemical dosing pumps specifically designed for clean water, wastewater and industrial process treatment applications. With a spring return mechanism, eccentric shaft, and thrust ring, this pump combines the advantages of a plunger pump in terms of performance with the sealing reliability of a diaphragm pump. The MB Series is perfect for dosing aggressive or hazardous chemicals, offering an economical, compact, and low-maintenance solution.
Key Advantages of OBL MB Series
- Spring-actuated mechanical diaphragm for accurate and leak-free dosing
- OBL’s patented diaphragm design ensures linearity between flow rate and stroke
- Easy maintenance with a small number of components
- Compact and sturdy construction using aluminum or glass-reinforced PP
- Availability of various head materials: PP, AISI 316L, Hastelloy, PVDF for broad chemical compatibility
OBL MB Series Specifications
| Model | Strokes (mm) | Max Flow Rate (L/h) | Max Pressure (bar) | Connections (Threaded/Flanged) | Weight (kg) | Max Suction Lift (mWC) | Materials |
|---|---|---|---|---|---|---|---|
| MB11 | 2 | 11 | 12 | 3/8” g.f. BSPF/DN15 | 10-25 | 1.5 | PP, AISI 316L, Hastelloy, PVDF |
| MB16 | 2 | 16 | 12 | 3/8” g.f. BSPF/DN15 | 10-25 | 1.5 | PP, AISI 316L, Hastelloy, PVDF |
| MB23 | 2 | 23 | 12 | 3/8” g.f. BSPF/DN15 | 10-25 | 1.5 | PP, AISI 316L, Hastelloy, PVDF |
| MB31 | 4 | 31 | 8 | 3/8” g.f. BSPF/DN15 | 10-25 | 1.5 | PP, AISI 316L, Hastelloy, PVDF |
| MB37 | 4 | 37 | 8 | 3/8” g.f. BSPF/DN15 | 10-25 | 1.5 | PP, AISI 316L, Hastelloy, PVDF |
| MB49 | 4 | 49 | 8 | 3/8” g.f. BSPF/DN15 | 10-25 | 1.5 | PP, AISI 316L, Hastelloy, PVDF |
| MB75 | 4 | 75 | 6 | 3/8” g.f. BSPF/DN15 | 10-25 | 1.5 | PP, AISI 316L, Hastelloy, PVDF |
| MB101 | 4 | 101 | 6 | 3/8” g.f. BSPF/DN15 | 10-25 | 1.5 | PP, AISI 316L, Hastelloy, PVDF |
| MB120 | 4 | 120 | 6 | 3/8” g.f. BSPF/DN15 | 10-25 | 1.5 | PP, AISI 316L, Hastelloy, PVDF |
| MB155 | 4 | 155 | 6 | 3/8” g.f. BSPF/DN15 | 10-25 | 1.5 | PP, AISI 316L, Hastelloy, PVDF |
Technical Data (Common to All Models)
| Parameter | Value |
|---|---|
| Flow Rate | 11-155 L/h (model dependent) |
| Stroke Length | 2 mm, 4 mm |
| Pump Materials | Aluminum casing; Glass-reinforced PP or AISI 316L pump head |
| Motor | 0.20-0.24 kW (Single/Three phase, 50/60 Hz) |
| Adjustment | 0-10 scale micrometer knob |
| Weight | 10-25 kg |
| Temperature | Max 45°C (chemical compatibility) |
OBL MB Series Application
- Dosing chemicals for clean water and wastewater treatment (coagulants, disinfectants, etc.)
- Industrial process dosing (pH control, corrosion inhibitors, etc.)
- Chemical injection systems for OEM or plant upgrades
- High compatibility with aggressive and hazardous fluids thanks to choice of head material
Installation Requirements
- Ensure maximum suction lift does not exceed 1.5 m.w.c.
- Confirm compatibility of wetted parts material (PP, AISI 316L, Hastelloy) with process chemicals
- Suitable for threaded and flanged connections (DN15)
- Maximum fluid and ambient temperature recommendation 45°C
Compatibility & Control Information
- Diaphragm options: PTFE, rubber, metallic reinforcement
- Controls: Manual micrometer, electric actuator, pneumatic actuator
- Can be integrated with plant control systems (4-20 mA, RS485)
- Accessories available: actuator, control panel, chemical storage tank
Ordering Information
- Select model based on flow rate, pressure, and construction material
- Use model code for option specifications (e.g. MB/37/PP/F/Z)
- Electric (Z-type) and pneumatic (W-type) actuator options available
For full technical details, please download the official datasheet: Download MB series.pdf
Other OBL Dosing Pump Products
In addition to the MB series, PT Watermart Perkasa also provides various other OBL dosing pump models that are ready to meet chemical dosing needs in various industrial and water treatment sectors:
- OBL Dosing Pump MB101 - Capacity up to 101 L/h, maximum pressure 6 bar, available for 1-phase and 3-phase, corrosion-resistant construction.
Download OBL Dosing Pump MB101.pdf - OBL Dosing Pump MB31PP - Flow rate 31 L/h, max pressure 8 bar, PP head material, dosing accuracy ±2%, suitable for water, chemical, F&B and pharmaceutical applications.
Download OBL Dosing Pump MB31PP.pdf - OBL Dosing Pump MB75PP - Capacity 75 L/h, pressure up to 6 bar, PP/AISI 316/PVDF material, patent diaphragm design, ideal for aggressive chemical dosing.
Download OBL Dosing Pump MB75PP.pdf - OBL Dosing Pump MC261PP - Flow up to 260 L/h, max pressure 7 bar, PP head, 3-phase 380V motor, suitable for wastewater, chemical, F&B, and pharmaceutical.
Download OBL Dosing Pump MC261PP.pdf - OBL Dosing Pump MC321PP - Capacity 320 L/h, pressure 6 bar, head PP, 2 kW 3-phase motor, for medium scale dosing in water, chemical and process industries.
Download OBL Dosing Pump MC321PP.pdf - OBL Dosing Pump MD521PP - Capacity 520-521 L/h, pressure 5 bar, 0.37 kW motor, 1” BSPT connection, PP material, CE certified.
Download OBL Dosing Pump MD521PP.pdf
Other OBL Dosing Pump Series
- OBL M Series - Mechanical diaphragm dosing pump, flow 7-1,500 L/h, pressure up to 12 bar, PTFE multilayer diaphragm, food contact compliance, suitable for water treatment, power plant, F&B, and pulp & paper.
Download OBL M Series.pdf - OBL R Series - Plunger metering pump, flow 0.8-1,000 L/h, pressure up to 100 bar, for high viscosity and high temperature applications, food contact version available.
Download OBL R Series.pdf - OBL XRN Series - Hydraulic diaphragm pump, flow 0.6-105 L/h, pressure up to 40 bar, integrated safety relief valve, material AISI 316/PVC/PVDF, compact footprint.
Download OBL XRN Series.pdf
OBL dosing-pump selection FAQ
Who supplies OBL dosing pumps in Indonesia?
PT Watermart Perkasa supplies OBL dosing pumps through water.co.id for WTP, WWTP, and industrial chemical-injection applications in Indonesia. Confirm model availability, document revision, and configuration when requesting a quotation.
Can an MB31 or MB75 be selected from the required L/h alone?
No. In addition to capacity, match injection pressure, chemical concentration and temperature, wetted-part material, suction conditions, connections, voltage, control method, and duty cycle.
When should buyers compare MB with R or XRN?
Start with MB for mechanical-diaphragm duties within its model range. Compare R when the application calls for a plunger pump at higher pressure or with a more viscous fluid, and XRN when hydraulic-diaphragm containment and pressure protection better fit the process risk.
Download Datasheet & Full Technical Information
- Download MB series.pdf
- Download OBL Dosing Pump MB101.pdf
- Download OBL Dosing Pump MB31PP.pdf
- Download OBL Dosing Pump MB75PP.pdf
- Download OBL Dosing Pump MC261PP.pdf
- Download OBL Dosing Pump MC321PP.pdf
- Download OBL Dosing Pump MD521PP.pdf
- Download OBL M Series.pdf
- Download OBL R Series.pdf
- Download OBL XRN Series.pdf
Contact PT Watermart Perkasa
For technical consultation, a quotation, or assistance selecting a dosing pump for your application, contact PT Watermart Perkasa through Watermart’s contact form.