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NEXTSTEP

NEXTSTEP is a manufacturer of precision fluid-handling equipment, with a product line centered on stepper motor-driven diaphragm metering pumps. The brand's 846G series, which includes models such as the NS3ASAKEEC1XXX, NS4ASAKVVC1XXX, NS4AMAKVVT1XXX, NS7ASAKEEC3XXX, NS7AMAKVVC3XXX, NS6AMAKVVC3XXX, and NS2AMAKVVT1XXX, is designed for accurate chemical dosing in water treatment, industrial processing, and other applications requiring controlled injection of liquids. These pumps use a stepper motor drive rather than a conventional AC induction motor, which allows for a high turndown ratio—up to 3333:1 on several models—and steady-state accuracy of ±1.0%. This combination supports precise flow adjustment across a wide range without manual reconfiguration of the pump head or stroke mechanism. The wetted materials across the series include PVDF (polyvinylidene fluoride) pump heads, PTFE (polytetrafluoroethylene) diaphragms, ceramic ball valves and internals, and FKM (fluoroelastomer) seals. These materials are selected for compatibility with aggressive chemicals such as acids, bases, and oxidizing agents commonly dosed in municipal and industrial water systems. The pumps operate on 115/230V AC, making them suitable for standard single-phase power supplies in many regions. The diaphragm design isolates the pumped fluid from the motor and drive components, reducing the risk of leakage and contamination. Because the diaphragm is the primary moving part in contact with the fluid, maintenance typically involves replacing the diaphragm and valve components rather than rebuilding a piston or plunger assembly. 3G Electric supplies the NEXTSTEP 846G series as individual SKUs, each corresponding to a specific model number and configuration. The product range includes variations in head material, seal material, valve type, and control interface, allowing buyers to match a pump to the chemical compatibility and flow requirements of a given process. 3G Electric provides global shipping and supports the line with technical specification data, model cross-referencing, and quotation services for single units or volume orders. For plant engineers and maintenance managers, the key selection criteria for these pumps include the chemical being dosed, the required flow rate and pressure, the available power supply, and the control signal used by the existing dosing system. The NEXTSTEP 846G series addresses these requirements with a modular set of options across the model range. The stepper motor drive also enables integration with external controllers that provide pulse or analog signals, which is common in automated dosing systems where flow must be adjusted based on a process variable such as pH, conductivity, or flow rate. This makes the pumps suitable for closed-loop control architectures without additional motor drives or variable-frequency controllers. The 846G series is positioned for continuous-duty operation in environments where chemical dosing accuracy affects process quality, safety, or regulatory compliance. Typical installations include water and wastewater treatment plants, cooling towers, boiler systems, and industrial process lines that require metered injection of treatment chemicals. 3G Electric maintains inventory and provides access to the full range of NEXTSTEP 846G SKUs, with the ability to source specific model numbers and configurations. The company serves procurement specialists who need to verify part numbers, compare specifications across similar models, and obtain pricing for standard or repeat orders. Because the pumps are used in critical dosing applications, 3G Electric emphasizes accurate model identification and specification matching to ensure that the supplied pump meets the chemical compatibility and performance requirements of the intended service.

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About NEXTSTEP

NEXTSTEP is a manufacturer of precision fluid-handling equipment, with a product line centered on stepper motor-driven diaphragm metering pumps. The brand's 846G series, which includes models such as the NS3ASAKEEC1XXX, NS4ASAKVVC1XXX, NS4AMAKVVT1XXX, NS7ASAKEEC3XXX, NS7AMAKVVC3XXX, NS6AMAKVVC3XXX, and NS2AMAKVVT1XXX, is designed for accurate chemical dosing in water treatment, industrial processing, and other applications requiring controlled injection of liquids. These pumps use a stepper motor drive rather than a conventional AC induction motor, which allows for a high turndown ratio—up to 3333:1 on several models—and steady-state accuracy of ±1.0%. This combination supports precise flow adjustment across a wide range without manual reconfiguration of the pump head or stroke mechanism. The wetted materials across the series include PVDF (polyvinylidene fluoride) pump heads, PTFE (polytetrafluoroethylene) diaphragms, ceramic ball valves and internals, and FKM (fluoroelastomer) seals. These materials are selected for compatibility with aggressive chemicals such as acids, bases, and oxidizing agents commonly dosed in municipal and industrial water systems. The pumps operate on 115/230V AC, making them suitable for standard single-phase power supplies in many regions. The diaphragm design isolates the pumped fluid from the motor and drive components, reducing the risk of leakage and contamination. Because the diaphragm is the primary moving part in contact with the fluid, maintenance typically involves replacing the diaphragm and valve components rather than rebuilding a piston or plunger assembly. 3G Electric supplies the NEXTSTEP 846G series as individual SKUs, each corresponding to a specific model number and configuration. The product range includes variations in head material, seal material, valve type, and control interface, allowing buyers to match a pump to the chemical compatibility and flow requirements of a given process. 3G Electric provides global shipping and supports the line with technical specification data, model cross-referencing, and quotation services for single units or volume orders. For plant engineers and maintenance managers, the key selection criteria for these pumps include the chemical being dosed, the required flow rate and pressure, the available power supply, and the control signal used by the existing dosing system. The NEXTSTEP 846G series addresses these requirements with a modular set of options across the model range. The stepper motor drive also enables integration with external controllers that provide pulse or analog signals, which is common in automated dosing systems where flow must be adjusted based on a process variable such as pH, conductivity, or flow rate. This makes the pumps suitable for closed-loop control architectures without additional motor drives or variable-frequency controllers. The 846G series is positioned for continuous-duty operation in environments where chemical dosing accuracy affects process quality, safety, or regulatory compliance. Typical installations include water and wastewater treatment plants, cooling towers, boiler systems, and industrial process lines that require metered injection of treatment chemicals. 3G Electric maintains inventory and provides access to the full range of NEXTSTEP 846G SKUs, with the ability to source specific model numbers and configurations. The company serves procurement specialists who need to verify part numbers, compare specifications across similar models, and obtain pricing for standard or repeat orders. Because the pumps are used in critical dosing applications, 3G Electric emphasizes accurate model identification and specification matching to ensure that the supplied pump meets the chemical compatibility and performance requirements of the intended service.

Common Applications

  • Municipal water treatment — NEXTSTEP 846G series pumps for dosing coagulants, flocculants, or disinfectants such as sodium hypochlorite.
  • Wastewater pH adjustment — NS4ASAKVVC1XXX or similar models with PVDF/PTFE wetted parts for caustic or acid dosing.
  • Cooling tower chemical treatment — 846G series pumps for scale inhibitors, corrosion inhibitors, and biocides.
  • Boiler water conditioning — NEXTSTEP metering pumps for oxygen scavengers and pH control chemicals.
  • Industrial process dosing — NS7AMAKVVC3XXX or NS6AMAKVVC3XXX for precise injection of additives in manufacturing lines.
  • Agricultural fertigation — 846G series pumps for metering liquid fertilizers and nutrients into irrigation water.

Frequently asked questions

Common questions about NEXTSTEP from 3G Electric.

What is the turndown ratio of NEXTSTEP 846G series metering pumps?

Several models in the NEXTSTEP 846G series, including the NS4ASAKVVC1XXX and NS4AMAKVVT1XXX, are specified with a turndown ratio of 3333:1. This means the pump can adjust its flow rate across a very wide range without changing hardware. The high turndown is achieved through the stepper motor drive, which allows precise control of the diaphragm stroke frequency. For applications where dosing requirements vary significantly—such as pH control in water treatment—this range reduces the need for multiple pump sizes or manual stroke adjustments. The steady-state accuracy for these models is ±1.0%, which supports consistent chemical concentration in the treated stream.

What wetted materials are used in NEXTSTEP 846G metering pumps?

The NEXTSTEP 846G series uses PVDF (polyvinylidene fluoride) for the pump head and PTFE (polytetrafluoroethylene) for the diaphragm. Many models also include FKM (fluoroelastomer) seals and ceramic ball valves or internals. PVDF and PTFE are chosen for resistance to aggressive chemicals, including acids, bases, and oxidizers. FKM seals provide additional chemical compatibility for the valve and connection areas. Ceramic components offer wear resistance in the valve seats and balls. When selecting a model, verify that the wetted materials are compatible with the specific chemical being dosed and its concentration. The material combination across the series is consistent, with variations primarily in the control interface and model configuration rather than in the base wetted materials.

What power supply do NEXTSTEP 846G pumps require?

NEXTSTEP 846G series metering pumps operate on 115/230V AC. This dual-voltage capability allows the same pump model to be used in different regions or facility power configurations without a separate transformer or power supply. The AC input powers the stepper motor drive, which then controls the diaphragm movement. For installation, confirm that the available supply voltage matches one of the rated inputs and that the circuit can provide the required current. Because the pump uses a stepper motor rather than a fixed-speed AC motor, the flow rate is controlled electronically rather than by adjusting a mechanical stroke knob, which is typical of many conventional metering pumps.

How does the stepper motor drive in NEXTSTEP pumps differ from a standard AC motor?

A stepper motor drive in NEXTSTEP 846G pumps allows the diaphragm stroke to be controlled in discrete increments, which provides precise flow adjustment and a high turndown ratio. Standard AC induction motors in metering pumps typically run at a fixed speed, with flow adjusted by changing the stroke length or using a variable-frequency drive. The stepper motor approach eliminates the need for a separate VFD and allows the pump to respond to pulse or analog control signals directly. This makes the 846G series suitable for automated dosing systems where the pump receives a signal from a controller and adjusts flow accordingly. The result is consistent dosing accuracy of ±1.0% in steady-state conditions for models with that specification.

Which NEXTSTEP 846G models are available through 3G Electric?

3G Electric supplies multiple SKUs from the NEXTSTEP 846G series, including the 846G13 (NS3ASAKEEC1XXX), 846G16 (NS4ASAKVVC1XXX), 846G39 (NS4AMAKVVT1XXX), 846G38 (NS4AMAKVVT1XXX), 846G29 (NS7ASAKEEC3XXX), 846G30 (NS7AMAKVVC3XXX), 846G26 (NS6AMAKVVC3XXX), and 846G36 (NS2AMAKVVT1XXX). Each SKU corresponds to a specific model number and configuration. The model numbers indicate variations in head material, seal type, valve configuration, and control interface. For procurement, provide the manufacturer part number or the 3G Electric SKU to ensure the correct pump is quoted. 3G Electric can also cross-reference model numbers if you have an existing installation and need a replacement or spare.

What maintenance is required for NEXTSTEP diaphragm metering pumps?

Maintenance for NEXTSTEP 846G series pumps typically involves inspecting and replacing the diaphragm, valve balls, and seals. The diaphragm is the primary wear component because it flexes with each stroke and is in contact with the pumped fluid. PTFE diaphragms are resistant to many chemicals but can fatigue over time, especially in continuous-duty applications. Valve components, including ceramic balls and seats, may also require replacement if they show wear or if flow accuracy degrades. FKM seals should be checked for swelling or cracking. Because the pump head is PVDF, it is generally resistant to chemical attack, but the sealing surfaces should be inspected during maintenance. Always isolate and flush the pump before servicing, and use replacement parts specified for the model to maintain accuracy and chemical compatibility.