Available materials
- SS304
- SS316
- PP
- PVDF
- Application-selected packing and valves
Petrox EngineeringRobust, adjustable chemical injection
Plunger Metering Pumps
Compact positive-displacement pumps for accurate injection where robust construction and straightforward adjustment matter.
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Tell us what the pump needs to do.
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Product overview
Selected around the complete duty.
Plunger metering pumps use a reciprocating plunger and stuffing-box liquid end to displace a controlled volume on every stroke. They provide a direct, durable solution for compatible chemicals and high-pressure dosing duties.
The VK Pumps drive provides stepless stroke adjustment, a linear relationship between control setting and stroke length, and capacity adjustment while running or stopped.
Flow rangeUp to 5,000 LPH
Pressure rangeUp to 100 bar
Turndown10:1
Accuracy+/-1% of set flow
Typical applications
- High-pressure chemical injection
- Water-treatment dosing
- Boiler chemical feed
- Additive dosing
- General process metering
Industries served
- Power
- Water treatment
- Chemicals
- Oil and gas
- Steel
- Pulp and paper
Standards & documentation
- API 675 configurations available
- Hydraulic Institute guidance
- Customer inspection requirements
Selection considerations
Information that leads to a better selection.
Share these details with Petrox so the recommendation is based on the actual process rather than a generic catalogue match.
- 01Fluid compatibility with packing
- 02Leakage containment requirement
- 03Required flow and pressure
- 04Packing maintenance access
- 05Suction condition
- 06Manual or automated capacity control
Technical resources
Review the Petrox-VK product brochure.
Download brochure
For a model-specific data sheet, share the fluid, flow, pressure and operating conditions.
Frequently asked questions
Practical answers before selection.
When should a plunger pump be selected?
It is a strong option for compatible, relatively clean liquids where robust high-pressure metering is required and a packed liquid end is acceptable.
Can multiple heads share one motor?
Yes. Multiple heads can be driven by a common motor, with each head independently adjustable in suitable configurations.
Can capacity be changed while running?
The drive supports capacity adjustment from zero to maximum while running or stopped, subject to the selected configuration.
Application support
Share the duty. We’ll help define the solution.
Send the fluid, required flow, suction conditions, discharge pressure and operating temperature for a focused technical response.