Per Revolution
V-Series dispense volume range.
Milliliter Metering Pump
V-Series Milliliter Valveless Metering Pump
Rugged electronic dispensing for broad fluid-handling applications
The Zaxis V-Series is a milliliter valveless metering pump for applications that require controlled dispensing across a broad fluid-handling range. V-Series heads dispense from 25 µL to 1.28 mL per revolution and meter up to 1920 mL/min, combining rugged performance with precision and repeatability.
V-SAN pump heads are designed for ease of disassembly. They use ISO male gauge threads as standard, allowing compression-type fittings in a wide range of imperial and metric sizes. Selecting the piston size closest to the maximum required volume supports the best accuracy and precision for the application.
The stepper-driven VMP-OEM-V drive is designed for V-Series heads and is intended for neat chemistry as well as some slurries, pastes, gels and creams. Typical VMP-OEM-V flow is below 1000 mL/min and pressure is below 100 PSI; RS485, PLC I/O and Ethernet connections are standard.
For more demanding flow, pressure or viscosity requirements, the servo-driven VMP-OEM-VS has nearly four times the torque. It can handle flow near 2,000 mL/min and back pressure up to 200 psi while accepting common V-Series heads. V-Series head accuracy is ±1% full scale with 0.5% full-scale CV repeatability.
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Why Choose the V-Series Milliliter Metering Pump?
The V-Series combines a rugged, disassemblable V-SAN head with stepper or servo drive options for milliliter metering and dispensing. Its volume range, broad selection of compression fittings and choice of VMP-OEM-V or VMP-OEM-VS drives provide a starting point for matching a pump to the process.
V-Series heads are built with ISO male gauge threads for compression fittings in imperial and metric sizes. The stepper-driven VMP-OEM-V is suited to broad applications including neat chemistry and some slurries, pastes, gels and creams. For higher flow, pressure or viscosity applications, the VMP-OEM-VS servo drive provides nearly four times the torque while accepting common V-Series heads.
Per Revolution
Metering Rate
V-Series metering rate.
Accuracy
Head accuracy specification.
Repeatability
Head coefficient-of-variation specification.
VMP-OEM-VS Pressure
Servo-drive back-pressure capability.
V-Series Metering Pump Benefits
The V-Series provides V-SAN head options together with stepper and servo drive choices. That pairing supports applications ranging from typical VMP-OEM-V dispensing below 1000 mL/min and 100 PSI to more demanding VMP-OEM-VS work near 2,000 mL/min and 200 psi back pressure.
- ✓Dispenses from 25 µL to 1.28 mL per revolution with V-Series heads.
- ✓Meters up to 1920 mL/min.
- ✓Uses ISO male gauge threads for compression fittings in imperial and metric sizes.
- ✓Offers a ceramic, medical-grade alumina-oxide and 316SS wetted path, with customization available.
- ✓Provides ±1% full-scale accuracy and 0.5% full-scale CV repeatability.
- ✓Uses the VMP-OEM-V stepper drive for neat chemistry and some slurries, pastes, gels or creams.
- ✓Uses the VMP-OEM-VS servo drive for higher flow, pressure or viscosity work.
- ✓Supports continuous metering, single or multiple dispense, flow dispense, flow direction and suck back.
- ✓Includes RS485, PLC I/O and Ethernet connections as standard.
How the V-Series Milliliter Metering Pump Dispenses
The eVmP family uses a patented valveless design and digitally controlled system-wide volumetric adjustments. For a V-Series dispense cycle, the piston handles fluid movement while the selected electronic program determines the requested operation.
Aspirate
The piston draws fluid into the milliliter pump head through the inlet path.
Rotate / Seal
The piston’s rotation seals the inlet, preparing the metering path for the programmed dispense.
Dispense
The piston dispenses the selected volume through the outlet path; V-Series heads cover 25 µL to 1.28 mL per revolution.
Repeat
The drive continues metering or repeats a single, multiple or flow-dispense program, with flow direction and suck-back operating modes available.
See the VMP video tutorial for an introduction to the pump. The precise internal valveless cycle wording beyond this generic description requires owner confirmation.
Where the V-Series Is Used
The V-Series is designed for milliliter metering and dispensing in automated fluid handling. Its 25 µL to 1.28 mL per-revolution range, meter rate up to 1920 mL/min and VMP-OEM-V/VMP-OEM-VS drive options make it relevant wherever controlled fluid delivery is needed.
Diagnostics reagent dispensing
Milliliter dispensing can support reagent-handling workflows; review the diagnostic reagent manufacturing resource for application context.
Read more →Buffer dispensing
Low-volume dispensing is relevant to buffer workflows described in the buffer-dispensing resource.
Read more →Pharmaceutical manufacturing
Electronic valveless metering can be evaluated for pharmaceutical manufacturing fluid-handling applications.
Read more →Chemical metering
The VMP-OEM-V supports neat chemistry, and some slurries, pastes, gels and creams.
Read more →Analytical instruments and OEM equipment
V-Series head and drive options can be evaluated for OEM fluid-metering systems that need milliliter delivery.
Read more →Electronics fluid metering
Low-volume electronic metering can be considered for electronics-related fluid-metering applications.
Read more →Technical Specifications
These V-Series head and drive specifications define the milliliter platform. Head choice, piston size, fitting and wetted-path configuration should be matched to the maximum dispense volume and fluid-handling requirement. Drive speed depends on viscosity, so flow and pressure guidance should be considered with the application. The final configuration should match the fluid, dispense volume, process timing and connection requirements. The configuration discussion can account for the selected V-Series head, fitting standard and drive option. Review operating conditions with Zaxis before final equipment selection.
- Compatible Drive
- VMP-OEM-V, VMP-OEM-VS
- Wetted Path
- Ceramic (medical grade alumina-oxide), 316SS, Customization available
- Operational Temps
- -20˚C – 70˚C, non-condensing
- Accuracy & Repeatability
- +/- 1% Full Scale Accuracy, 0.5% Full Scale CV (coefficient of variation)
- Drive Dimensions
- VMP-OEM-V: 2.8″ wide, 4″ high, 6.5″ deep VMP-OEM-VS: 3.1″ wide, 4.2″ high, 7.4″ deep
- Compatible Heads
- V1, V2, V3
- Weight
- VMP-OEM-V: 7lbs (with pump head) VMP-OEM-VS: 7.5lbs (with pump head)
- System Power
- 24/36VDC 2Amps
- Pressure Range
- VMP-OEM-V: 100PSIG Max VMP-OEM-VS: 200PSIG Max
- RPM
- VMP-OEM-V: 1,000 VMP-OEM-VS: 1,500 (speed dependent on viscosity)
- Operational Types
- Continuous Metering, Single/Multiple Dispense, Flow Dispense, Flow Direction & Suck Back
- Stored Programs
- Up to 50
- Interface
- RS485, 1/2 or Full Duplex, Optional EtherNet/IP
Compare the
eVmP Range
The eVmP range spans different dispensing volumes and drive configurations. Choose the V-Series when the application needs milliliter dispensing from 25 µL to 1.28 mL per revolution and metering up to 1920 mL/min. Choose the VMP-OEM-V for typical flow below 1000 mL/min and 100 PSI, or evaluate the VMP-OEM-VS for higher flow, pressure or viscosity work near 2,000 mL/min and 200 psi.
| Specification |  M-Series |  V-Series |  VS10-Series |  eVmP1 Benchtop |  eVmP2 Dual |
|---|---|---|---|---|---|
| Format | Pump head + OEM drive | Pump head + OEM drive | Pump head + servo drive | Benchtop enclosure, 7″ touchscreen | Dual enclosure, two pumps |
| Volume per revolution / stroke | 2.5–100 µL | 25 µL–1.28 mL | 10 mL per stroke | Up to 1.28 mL (installed head) | Up to 1.28 mL (installed heads) |
| Maximum flow | Under 100 mL/min | Up to 1,920 mL/min (VS drive) | 6 L/min at 600 RPM | Up to 900 mL/min | Up to 1,920 mL/min (VS-Series) |
| Maximum pressure | 100 PSIG | 100 PSIG (V) / 200 PSIG (VS) | 100 PSIG | 0–100 psi | 100 PSIG (M/V) / 200 PSIG (VS) |
| Accuracy / repeatability | ±1% FS / 0.5% CV | ±1% FS / 0.5% CV | ±1% FS / 0.5% CV | ±1% FS / 0.5% CV | ±1% FS / 0.5% CV |
| Wetted path | Ceramic, PVDF (Kynar®), PTFE, Rulon® AR | Ceramic, 316SS | Ceramic, 316SS, PTFE; sanitary fittings | Ceramic, 316SS, 303/304SS, PVDF, PEEK | Ceramic, 316SS, 303/304SS, PVDF, PEEK |
| Drive | Stepper (VMP-OEM-M) | Stepper (VMP-OEM-V) or servo (VMP-OEM-VS) | Servo (VMP-OEM-VS10) | M/V stepper or servo drive | Two stepper drives |
| Interface | RS485, PLC I/O, optional EtherNet/IP | RS485, PLC I/O, optional EtherNet/IP | RS485, PLC I/O, optional EtherNet/IP | RS485, 24 VDC I/O, optional EtherNet/IP | Ethernet TCP/IP, RS485 |
| Stored programs | Up to 50 | Up to 50 | Up to 50 | Up to 50 per drive | Up to 50 |
Industries We Serve
V-Series milliliter metering pumps can be evaluated across fluid-metering applications where controlled dispensing, electronic operation, compression fittings and stepper or servo drive options are relevant. The fluid, required volume, pressure, viscosity and operating conditions determine the appropriate configuration.
ElectronicsAccurate fluid metering for electronic manufacturing processes.
EnvironmentalRepeatable dosing for environmental monitoring and treatment.
MedicalPrecision dispensing for medical manufacturing applications.OEMConfigurable metering pumps for OEM equipment.Pharmaceutical ManufacturingReliable fluid control for pharmaceutical production.Positive Displacement PumpsPrecision metering solutions for fluid-control applications.V-Series Milliliter Metering Pump FAQ
What dispense volume does the V-Series cover?
V-Series heads dispense from 25 µL to 1.28 mL per revolution.
What meter rate can the V-Series reach?
The V-Series meters up to 1920 mL/min.
What wetted-path materials are available?
V-Series heads use medical-grade alumina-oxide ceramic and 316 stainless steel in the wetted path; customization is available.
What is the V-Series accuracy and repeatability?
The milliliter head is specified at ±1% full-scale accuracy and 0.5% full-scale CV, or coefficient of variation.
Which drives work with V-Series heads?
Compatible drives are VMP-OEM-V and VMP-OEM-VS. The VMP-OEM-V is stepper driven, while the VMP-OEM-VS is servo driven.
When should the VMP-OEM-VS be considered?
The servo drive is for more demanding higher-flow, higher-pressure or higher-viscosity applications. It has nearly four times the torque and can handle flow near 2,000 mL/min and back pressure up to 200 psi.
What operating modes are available?
The drive supports continuous metering, single or multiple dispense, flow dispense, flow direction and suck back. Up to 50 stored programs allow repeatable operating setups.
How should a piston size be selected?
Select the piston size closest to the maximum required volume for the best accuracy and precision.
V-Series Resources
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