Chemical Injection Pumps
As experts in PD pumps AxFlow offers a big choice of chemical injection pumps
Chemical injection pumps are used where fluids must be delivered accurately, reliably and often at high pressure. Requirements vary widely across offshore, petrochemical and industrial process applications, with different duties calling for different levels of flow control, pressure capability and dosing accuracy. AxFlow offers a broad choice of metering pumps which can act as chemical injection pumps in addition to which we have through to high pressure piston and plunger pumps. AxFlow also specialises in chemical injection pump skids.
What is a chemical injection pump?
A chemical injection pump (often referred to as a dosing or metering pump) is a positive displacement pump designed to introduce a controlled, repeatable volume of chemical into a process stream. Injection duties can range from low-flow precision dosing to high-pressure injection where line backpressure and operating conditions demand robust pump technology and reliable control.
AxFlow Chemical Injection Pump Ranges
Hydra-cell High-pressure diaphragm pumps for dependable dosing where containment and durability are key.
FMC High-pressure piston and plunger pumps for demanding injection duties, including flows up to 320 m³/hr and pressures up to 700 bar.
OBL Metering pump solutions capable of overcoming pressures up to 400 bar.
Pulsafeeder are world leaders in metering pumps for presures up to 1000 bar.
Typical chemical injection applications
• Corrosion and scale inhibitor injection
• Methanol/MEG and production chemical injection (duty dependent)
• Process additive dosing and catalyst dosing
• pH control and neutralisation dosing
• Tracer, dye and conditioning chemical dosing
• Sampling skids and packaged dosing systems
Which technology suits which duty?
Metering pumps (precision dosing): Best for lower-flow precision dosing where repeatability and controllability are priorities.
Diaphragm pumps (high-pressure dosing with containment focus): A strong choice for high-pressure dosing where robust containment and reliable continuous operation are required.
Piston and plunger pumps (tough high-pressure injection): Best for the most demanding high-pressure injection duties where maximum pressure capability and performance margins are required.
Choosing the Right Chemical Injection Pump
The right chemical injection pump depends on the demands of the application. Key factors include required dosing accuracy, discharge pressure, flow rate, fluid properties and the operating environment. For lower flow precision dosing, metering pumps are often the preferred choice. For tougher high pressure service, diaphragm, piston and plunger pumps provide the performance needed for reliable injection.
Chemical Injection Pump Solutions from AxFlow
AxFlow offers chemical injection pump solutions for applications that demand dependable dosing, high pressure capability and flexible system design. With metering pumps, diaphragm pumps, piston and plunger pumps, plus chemical injection skid capability, the range supports a wide variety of injection duties across process industries.
FAQs
What’s the difference between chemical injection and metering?
Chemical injection describes the application (injecting chemicals into a process). Metering refers to the pump function (accurate, repeatable dosing), which is commonly used for injection duties.
When should I use a diaphragm pump vs a plunger/piston pump?
Use diaphragm technology when you need dependable dosing with strong containment characteristics. Use piston/plunger technology for the toughest high-pressure duties where maximum pressure capability is required.
Can AxFlow supply complete injection packages?
Yes. AxFlow specialises in chemical injection pump skids and can provide an engineered solution built around the right pump technology for your duty.
