Metering
High-pressure chemical dosing with volumetric accuracy for boilers, oil and gas, and process injection.
Metering
Solenoid-driven metering pumps, motor-driven pumps, piston-type, hydraulic pumps, pneumatic pumps, transfer pumps, unloading pumps, and plunger pumps offer precise dosing with minimal maintenance. Their single moving part ensures durability, low wear, and cost-effective, reliable performance.
Overview
Jams delivers high-precision plunger metering pumps for demanding industrial duty in Pakistan. When corrosive, hazardous, or high-viscosity chemicals must be injected at high pressure, plunger technology provides the accuracy and durability plant teams rely on.
A plunger metering pump is a positive displacement pump that moves a precise volume with each stroke. It is the preferred choice for high-pressure chemical feed, accurate metering, and continuous or intermittent dosing where discharge pressure exceeds typical diaphragm limits.
Authorized partner: ProMinent
In depth
Capability, accuracy, duty class, and how this product fits your process.
In oil and gas, petrochemicals, and power generation, you need a pump that holds constant flow against extreme discharge pressure. Plunger pumps are built for that duty.
They deliver high-pressure capability often far above standard diaphragm pumps, volumetric accuracy better than +/- 1%, robust SS316 and specialty liquid ends for abrasive or harsh cycles, and a linear flow curve proportional to stroke length even when system pressure fluctuates.
A motor drive moves the plunger back and forth. On the suction stroke the plunger retracts, opens the suction valve, and draws fluid into the chamber. On the discharge stroke the plunger advances, closes suction, opens discharge, and pushes fluid into the process line.
Stroke length or stroke frequency (via VFD) sets the dose with fine control. That precision matters for boiler feed treatment, where scale inhibitors or oxygen scavengers must inject against high boiler pressures.
Manual micrometer stroke adjustment or automated electric actuators (4-20 mA) support both operator and PLC control. Advanced PTFE/graphite gland packing helps keep aggressive media contained. Designs align with rigorous positive-displacement standards, and liquid ends are customizable for chemical compatibility.
From wastewater treatment in Karachi to textile plants in Faisalabad and Lahore, exact chemical addition protects product quality and compliance. Over-dosing wastes chemical and risks contamination; under-dosing fails the process. A correctly specified dosing pump removes that guesswork.
Water treatment uses include chlorination, pH adjustment with acids or caustic, and polymer/alum flocculation. Textiles need precise dyes, bleach, peroxide, and stabilizers. Oil and gas rely on corrosion inhibitors, methanol injection, and demulsifiers. Food and beverage use sanitary dosing for additives and CIP chemicals.
Selection depends on viscosity, corrosiveness, flow rate, and pressure. Solenoid pumps suit smaller low-pressure duties; motor-driven plunger and diaphragm units fit higher capacity and continuous industrial service. Wetted parts in PVDF, PVC, PP, SS316, or Hastelloy must match your chemical. Modern plants also link pumps to pH controllers, flow meters such as VX 570 or VA 500, and PLC closed-loop control.
Technical data
Key performance points at a glance. Final selection depends on your duty point.
Why this product
Practical advantages for plant teams specifying and running this equipment.
Handle discharge pressures that exceed standard diaphragm metering pumps.
Tight metering reduces chemical waste and keeps process recipes on target.
Flow stays proportional to stroke length even when system pressure changes.
Advanced gland packing materials support safer handling of aggressive media.
Manual or 4-20 mA / VFD control for PLC and SCADA integration.
Duty sizing, materials advice, and spare parts from Lahore and Karachi.
Applications
Typical industrial uses. Share your site conditions for a confirmed recommendation.
Request application adviceWhy JAMS
From pressure and flow calculation to install guidance and after-sales support.
We match materials and duty points so sulfuric acid, polymers, and clean water each get the right build.
Critical spare parts kept ready so a minor failure does not stop your line.
FAQ
A plunger pump uses a direct-acting plunger and handles significantly higher discharge pressures, ideal for boiler feeding or oil and gas injection. A diaphragm pump uses a flexible membrane and suits leak-free hazardous fluid handling at lower to medium pressures.
Yes. Wetted parts can be specified in SS316, PVDF, PVC, or Hastelloy to match sulfuric acid, caustic soda, chlorine, and other aggressive media.
Yes. Jams provides after-sales support, installation guidance, troubleshooting, and essential spares from Lahore and Karachi.
Adjust manually with a micrometer dial, or use VFD / electric actuators on a 4-20 mA signal for remote PLC or SCADA control.
Size so normal operating flow sits between about 30% and 80% of maximum capacity. Share dosage rate and system pressure and our team will recommend the model.
Regular calibration, suction-line strainers and foot valves, and gearbox oil changes on motor-driven units keep metering accurate and extend service life.
Next step
Share chemical, required LPH, and discharge pressure. We will propose a plunger metering package.
Client reviews
Trusted by industrial clients across Pakistan for metering, measurement, and process support.
JAMS helped us specify the right dosing and measurement package, then stayed with us through commissioning. Clear engineering advice and reliable follow-up.
From leak detection to flow metering, their team understands plant realities. Response from Lahore has been consistent and practical.
Authorized equipment with local support is what we needed. Quotes are clear, and after-sales coordination has been dependable.
Professional selection support for flow and compressed-air tools. The documentation and handover made operator training straightforward.
Metering pump selection and spare guidance saved us downtime. The engineering notes were clear enough for our shift teams to act on.
Residual control and disinfection support arrived with practical commissioning help. Documentation matched what auditors expect.
Compressed-air flow metering exposed losses we had been guessing at. Follow-up from the field team was prompt and useful.
Good application advice on chemical feed packages. After-sales coordination kept our install window on schedule.
From inquiry to dosing start-up, the path was structured. We got the right duty without over-specifying the package.
Instrument calibration support and spare parts planning reduced unplanned stops on critical lines.
Quotes were transparent and the authorized principals gave us confidence. Commissioning guidance was practical on site.
Measurement and dosing support helped stabilize residual targets. Communication stayed clear through handover.
Clients
Trusted partners across Pakistan
© 2026 Jams (Pvt.) Ltd. - All Rights Reserved
Today
Hello! Welcome to JAMS WhatsApp support.
For a quick query, pick an option below — or type your own message about metering, measurement, sizing, or spare parts.
2:38 PM
