What is chemical dosing pump?
Chemical/metering dosing pump is a volumetric chemical dosing system that can change capacity manually or automatically as required by process conditions about 90% of all pumps sold are transfer pumps, used to move liquids from point a to point b. metering pumps designed for precise injection of chemicals, acids, bases corrosive or viscous liquid, and slurries. Metering pumps are needed for applications where one or more conditions exist.
- High system pressure
- Requires high precision feed rate
- Requires low flow rate (ml/hr or GPH)
- Requires pumping of viscous fluids or slurries
- Handles corrosive, dangerous, or high-temperature fluids
- Variable flow rate must be controlled by a computer, microprocessor, DCS, or PLC
Table of Contents
- What is chemical dosing pump?
- How does a chemical metering pump work?
- Types of dosing pumps
- Parts of a Chemical Dosing System
- Pulsafeeder dosing pump Prime Performance Series
- Pulsafeeder dosing pump 100 / 150 Series
- Pulsafeeder dosing pump 200 Series
- ALLEDOSIEREN Dosing Pump 8.16 Liter per hour
- ALLEDOSIEREN Dosing Pump 15.20 Liter per hour
- SEKO Chemical Dosing Pump I 08LPH@12Bar
- SEKO Chemical Dosing Pump I 20-54LPH@05Bar
- SEKO Metering Dosing Pump, Italy.
- Solenoid Driven Dosing Pump
How does a chemical metering pump work?
The pump motor drives a piston to produce a vacuum that draws the chemical from the external tank of the metering pump into the liquid end. Interspersing piston strokes produce pressure that closes the bay stopcock and opens the outlet stopcock, forcing the chemical into the process. There’s a diaphragm at the liquid end that acts as a hedge between the piston and the process fluid.
Occasionally the diaphragm is mechanically connected to the piston. Occasionally the diaphragm is hydraulically connected. the pumping stir of the piston is applied to the hydraulic fluid, and the diaphragm bends back and forth as the piston reciprocates. the movement of the piston bends the diaphragm – the more the diaphragm bends, the advanced the inflow rate of the pump. the inflow rate can be precisely controlled to ensure that the process receives what it needs and that there’s no over/ under injection.
Types of dosing pumps
Metering pumps are available in a variety of types and sizes. Whether they are used in food processing applications, manufacturing plants, or anywhere else where liquids need to be pumped in constant and precise amounts, there is a metering pump that is perfect for the job. The four conventional metering pump types are designed for different pressures, chemicals, and applications. They vary by pumping action and mechanism:
- Diaphragm (constant injection) pumps use diaphragms, pistons, and valves at the inlet and outlet to fill and empty their chambers. The pumping of the piston fills the chamber and injects a specific amount of chemical at a preset rate, usually as a percentage of the maximum flow rate. Some pump models are capable of varying the dose rate.
- Diaphragm (pulse jet) pumps also use a diaphragm mechanism, but instead of a constant flow rate, a solenoid coil draws in the chemical and injects it in pulses. The flow rate is the length of time between pulses. It is not as accurate as a constant injection pump, but the design is simple and inexpensive.
- Lobe pump A pump that allows a certain volume of fluid to pass through a meshed gear impeller. It is not as accurate as a diaphragm pump and is only suitable for high viscosity fluids that have a self-lubricating effect to minimize wear. They are not made for low flow rates, as it is difficult to ensure accuracy.
- Peristaltic pumps are very accurate in metering. The flexible bent tube allows the fluid to pass through and the flow rate is controlled by a roller, which is moved by an external robotic arm. This pushes the product in the tube into the metering tube and the main fluid stream.
Parts of a Chemical Dosing System
Main components of a dosing pump include:
- Chemical vessel or tank – holds the product to be dosed.
- Pump-Various materials and sizes; including inlet, suction, and dosing tubes.
- Injector-a one-way valve into which the chemical is injected into the product; overcomes the pressure in the piping and allows the chemical to enter the liquid flow.
- Bottom valve-a one-way valve attached to the suction line; placed inside the product drum to keep the pump in the starting position.
- Dosing line – rigid or reinforced hose; can be PE, PVC, or stainless steel for high-pressure use.
- Control system – ensures accuracy; opens and closes at specific times. Can be a simple flow switch or timer, to a variety of sensors for SCADA central control systems, and can be integrated into a larger system.
Pulsafeeder dosing pump Prime Performance Series
General Specifications
Pump Head Materials: PVC
Fitting Material Available: PVC
Seat O-Rings Available: CSPE, Viton
Balls Available: Ceramic
Diaphragms: PTFE-faced CSPE-backed
Tubing Available: Clear PVC, White PE, Black PE
Power Input: 115 VAC – 60 HZ, 230 VAC – 50 HZ, 230 VAC – 60 HZ
Product Options:
- Duplex Head
- Current Interrupter
- 15 or 35 Gallon Tank with Bulkhead
Accessories
- Dampeners
- Gauges
- KOP Kits
- Pre-Engineered Feed Systems
- Process Controllers
- Tanks
Pulsafeeder dosing pump 100 / 150 Series
General Specifications
Pump Head Materials: Clear PVC, PVC, PP, 316 SS
Fitting Material Available: GFPPL, PVC, PVDF
Bleed Valve: Same as fitting and check valve selected (except 316SS)
Seat O-Rings Available: PTFE, CSPE, Viton
Balls Available: Ceramic, PTFE, 316 SS
Diaphragms: CSPE, Viton, PTFE-faced CSPE-backed
Tubing Available: Clear PVC, White PE, Black PE
Power Input: 115 VAC – 60 HZ, 230 VAC – 50 HZ, 230 VAC – 60 HZ
Product Options:
- Duplex Head
- Current Interrupter
- Five Function Valve
- Five Function Degas Valve
- 15 Gallon ITS Tank
Accessories
- Dampeners
- Gauges
- KOP Kits
- Pre-Engineered Feed Systems
- Process Controllers
- Tanks
Pulsafeeder dosing pump 200 Series
Pump Head | PVC | 316 SST |
Diaphragm & Valve Seats | PTFE | |
Gaskets | PTFE | |
Ball Checks | Ceramic | PTFE, 316 SST |
Fittings | PVC | 316 SST |
Discharge Tubing | Polyethylene | 1/2″ NPT Connections |
Suction Tubing | Flexible PVC | 1/2″ NPT Connections |
Motor | TEFC |
Features
- Feed Rate Control.
- Heavy-duty fan-cooled motor with thermal overload protection.
- Bleed Valve Assembly Standard.
- High torque motor gear coupling. Ensures start-up under maximum pressure.
Applications
- Chlorination
- Fluoridation
- Sewage treatment
- Disinfection systems
- Bottling plants
- Pumping water purification chemicals
- Addition of pH adjustment chemicals
ALLEDOSIEREN Dosing Pump 8.16 Liter per hour
Brand | ALLEDOSIEREN |
Model | VT08004PH1A6000 |
Liquid | All Chemical |
Dosing Head | PP |
Section, Discharge | PPE |
Diaphragm Material | EPDM |
Sp. Gravity | 1 kg/dm3 |
Temperature | Ambient |
Discharge Capacity | 8.16 LPH |
Total dynamic head | 3.8 Bar |
Drive Motor | 16 Walt |
Standardization | ISO 9001, 2008 |
Valve Ball Material | Alumina Ceramic |
O-ring | FKM / EPDM |
Seal & Gasket | EPDM / FPM |
Origin | China |
ALLEDOSIEREN Dosing Pump 15.20 Liter per hour
Brand | ALLEDOSIEREN |
Model | VT 15002 |
Liquid | All Chemical |
Dosing Head | PP |
Section, Discharge | PPE |
Diaphragm Material | EPDM |
Sp. Gravity | 1 kg/dm3 |
Temperature | Ambient |
Discharge Capacity | 15.20 LPH |
Total dynamic head | 1.8 Bar |
Drive Motor | 24 Walt |
Standardization | ISO 9001, 2008 |
Valve Ball Material | Alumina Ceramic |
O-ring | FKM / EPDM |
Seal & Gasket | EPDM / FPM |
Origin | China |
SEKO Chemical Dosing Pump I 08LPH@12Bar
What & Why AKS603 Seko Dosing Pump?
For dosing a certain amount of acid, chemical to your plant use AKS603 Seko Dosing Pump to get the best efficient service. Your industrial life requires the use of many types of chemicals, acids, and alkalis. This use standard is a certain amount of pumping that is used to dosing keeping this specific amount of standard is called a dosing pump.
The advantage of using this pump is that it is not damaged by acid or other corrosive substances and can be used for a long time. Considering all these aspects, we use different capacity pumps depending on the daily demand. Seko Dosing Pump is one of the leading brands in the world and HT brand BK pumps are very good for lime, polymer, etc.
Product Specification for AKS603 Chemical Dosing Pump:
- Model: AKS603NHP0800
- Liquid: Acid/Chemical
- Dosing Head: PVDF
- Section, Discharge: PPE
- Diaphragm Material: EPDM
- Sp. Gravity : 1 kg/dm3
- Temperature: Ambient
- Discharge Capacity: 08 LPH
- Total dynamic head: 2Bar
- Drive Motor: 20 W
- Standardization: ISO 9001, 2008
- Valve Ball Material: Alumina Ceramic
- O-ring: FKM / EPDM
- Seal & Gasket : EPDM / FPM
- Brand: SEKO
- Origin: Italy
SEKO Chemical Dosing Pump I 20-54LPH@05Bar
What & Why AKS603 Seko Dosing Pump?
For dosing a certain amount of acid, and chemicals to your plant use AKS803 Chemical Dosing Pump to get the best efficient service. Your industrial life requires the use of many types of chemicals, acids, and alkalis. This use standard is a certain amount of pumping that is used to dosing keeping this specific amount of standard is called a dosing pump. The advantage of using this pump is that it is not damaged by acid or other corrosive substances and can be used for a long time. Considering all these aspects, we use different capacity pumps depending on the daily demand. Seko Dosing Pump is one of the leading brands in the world and HT brand BK pumps are very good for lime, polymer, etc.
- Product Specification for AKS803 Seko Dosing Pump:
- Model: AKS803NHP0800
- Liquid: Acid/Chemical
- Dosing Head: PVDF
- Suction, Discharge: PPE (10mm)
- Diaphragm Material: EPDM
- Sp. Gravity : 1 kg/dm3
- Temperature: Ambient
- Discharge Capacity: 20-54 LPH
- Total dynamic head: 5-2 Bar
- Drive Motor: 40 W
- Standardization: ISO 9001, 2008
- Valve Ball Material: Alumina Ceramic
- O-ring: FKM / EPDM
- Seal & Gasket : EPDM / FPM
- Brand: SEKO
- Origin: Italy
SEKO Metering Dosing Pump, Italy.
Seko is an International Group; Seko has been a significant manufacturer of metering pumps and dosing systems since 1976. MS1 pumps are mechanical diaphragm metering pumps featuring a spring return mechanism in an aluminum housing. Mechanical Diaphragm Metering pumps:
FEATURES:
- FLOW RATE from 50 to 1200 L/h
- MAX PRESSURE 10 bar
- STROKE RATE 58-78-116-232 strokes/minute
- DIAPHRAGM DIAMETER from 64 to 165 mm
- MOTOR standard 0.18-0.25-0.37-0.55 Kw (IP 55) STROKE
- LENGTH 2 mm – 4 mm – 6 mm
Solenoid Driven Dosing Pump
Duty Parameter
- Capacity: from 1,5 to 102 L/h
- Liquid end: PVDF, PTFE, EPDM, FPM, and Ceramic
- Analog and Digital range with constant or proportional dosage
Design Features
- The innovative Tekna EVO series electronic metering pumps are the result
of working closely with our worldwide customers. These multifunctional metering pumps maintain the high reliability that is synonymous with SEKO quality.
Material of Construction
- Diaphragm: PTFE
- Seal : FPM / EPDM
- Ball: Ceramic
Applications
- Water Treatment Plant ( RO, DM, Softener )
- Waste Water Treatment Plant ( ETP, STP, WWTP)
- Industrial Production Process (Textile, Paper, Tanneries, Food Processing, etc.)
- Acid, Caustic, Disinfectant, etc. Dosing System
ITC MF Series Metering Pump
Clever
Just 6 models, Just PVDF,
All functions in one pump.
• 6 models that cover 0.4 to 110 L/h with an output
Pressure up to 20 Bar
• 1 Casing allows skids to be pre Constructed, as the
fixing points remain Constant. And the pumps can be
Selected on Confirm motion of the dosing flow.
• Inventory Reduction Reduce Spares Holding.
Compatible
PVDF pump Head and Ceramic ball Valve as Standard
PVDF is suitable for almost all chemicals used in the industrial Wastewater treatment of potable water & Boiler Dosing Applications.
The use of ceramic balls as standard improves the pumping reliability and the chemical Compatibility of the whole liquid end with Full chemical Compatibility.
Reliable
Long-life diaphragm tested to give 5 Years working life.
The Advanced design and manufacturing process allows the diaphragm to have a unique life Expectancy.
Made in pure solid PTFE, the diaphragm is compatible with most chemicals. The diaphragm has been Tested over a period of 5 Years giving superior results. Routine diaphragm replacement is no longer a requirement,
Reduced maintenance
Full chemical compatibility.
Dosing Mode
The pump Head has a manual priming valve, The flow rate is manually or automatically (by signal input) adjustable from 0 (pump stop) to 100% of the max flow rate. Moreover, it is equipped with a low-level alarm to stop or not the pump.
Pumps Head
BOBY: PVDF
Ball Valve: Ceramic
Seal Valve: EPM/EPDM
DIAPHRAGM: PTFE
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