05 — Process skid systems
Reliable dosing. Precise control. Multi-industry flexibility — a modular family of skid-mounted dosing systems for controlled chemical feed, additive injection, inline blending and process metering across terminals, refineries, chemical plants, utilities and general industry.
01 — Product overview
The LineSig LNS-DZ Series is a modular family of skid-mounted dosing systems engineered for controlled chemical feed, additive injection, inline blending and process metering across terminals, refineries, chemical plants, utilities and general industry.
The family is based on four pump technologies — centrifugal, diaphragm, piston/plunger and precision micro gear — integrated with application-matched flow measurement, pressure protection, process instrumentation, local control and PLC/DCS/SCADA interfaces. Rather than applying one pump principle to every service, LNS-DZ uses an application-specific engineering approach for medium- and high-flow dosing or blending, corrosive and hazardous chemical metering, high-pressure chemical or hydrocarbon injection, and very low-flow precision additive and catalyst dosing.
This allows pump technology, materials, pressure class, filtration, pulsation control, flow measurement and automation to be selected according to the actual liquid and operating conditions.
Chemical source / day tank → Suction isolation → Strainer / filter → Selected dosing pump → Pulsation control where applicable → Pressure protection → Flow verification / metering → Control or injection valve → Check valve / injection quill → Process line, tank, manifold or gantry header. The exact process sequence is modified according to service — centrifugal systems may use flow-control valves and/or VFD control; diaphragm systems may include calibration columns and back-pressure valves; piston/plunger systems require engineered pressure protection and pulsation control; micro-gear systems require clean liquid and fine suction filtration.
02 — Design
Choose a technology
The LNS-DZ Series shares a common platform but not the same process assumptions — pump technology, materials and control philosophy are engineered around each service.
Medium- to high-flow chemical feed, additive injection, inline blending and controlled liquid transfer with smooth, non-pulsating delivery.
View technology →Accurate positive-displacement metering for corrosive, hazardous or leak-sensitive chemicals, with the diaphragm isolating process liquid from the drive.
View technology →High-pressure chemical and hydrocarbon injection where process backpressure is beyond the practical range of centrifugal systems.
View technology →Very low-flow, high-repeatability dosing for catalysts, dyes, markers and specialty additives with near-continuous, low-pulsation delivery.
View technology →| Model | Pump technology | Primary duty | Primary engineering focus |
|---|---|---|---|
| LNS-DZ-CEN | Centrifugal | Medium/high-flow dosing and blending | Smooth flow, hydraulic selection, multi-line control |
| LNS-DZ-PDD | Diaphragm metering | Corrosive/hazardous chemical dosing | Chemical compatibility, calibration, leak isolation |
| LNS-DZ-PDP | Piston / plunger | High-pressure process injection | Pressure protection, pulsation, packing design |
| LNS-DZ-PDG | Precision micro gear | Very low-flow additive dosing | Fine filtration, viscosity control, repeatability |
Model selection: LNS-DZ-CEN for medium/high-flow dosing, inline blending, loading-gantry additives and controlled liquid transfer. LNS-DZ-PDD for corrosive, hazardous or leak-sensitive chemical metering. LNS-DZ-PDP for high-pressure pipeline, refinery and process injection. LNS-DZ-PDG for very low-flow catalysts, dyes, markers and specialty additives.
03 — Control & safety
05 — Ordering information
LineSig designs and delivers each package against the approved project datasheet, P&ID, operating philosophy and applicable standards.