Cast iron piston compressor VWK430-3-0/90P input power 2.2 kW, intake 420 l/min, pressure 10 bar, air receiver 90 l, voltage 400/50 V/Hz
Code: VWK430-3-0/90P
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Product detailed description
WALTER VWK430-3,0/90P - Vertical Cast-Iron Piston Compressor
The VWK430-3,0/90P is the vertical entry-level version of the WALTER range. The twin-cylinder all-cast-iron unit in 2V configuration has a power input of 2.2 kW, intake of 420 l/min and an effective delivery of 340 l/min at a pressure of 10 bar. It operates at 1,276 rpm, features a three-phase 400 V / 50 Hz power supply, and a noise level of approx. 80 dB(A).
This machine is not purchased for its performance – it is the same as that of the horizontal version of the 2.2 kW class. It is purchased for the floor space: the vertical 90 l tank stands against the wall and takes up a fraction of the area that a horizontal tank would block in the workshop. Warranty of 3 years after registration at waltercesko.cz.
Configuration of this machine
- Cast-iron unit — 2V · 1,276 rpm · single-stage compression
- Pressure vessel — 90 l · vertical
- Vertical design — Vertical tank — smaller floor footprint
- Three-phase 400/50 V/Hz
- Standard pressure of 10 bar for common pneumatic tools
Why choose this model
Same unit as the horizontal version, just standing up
The vertical design changes nothing about the mechanics: the same 2V two-cylinder cast-iron unit, the same 1,276 rpm, and the same 420 l/min intake and 340 l/min delivery. Only the orientation of the pressure vessel changes, meaning how the machine stands in the workshop – not what it can do.
10 litres that you won't notice in practice
The horizontal sibling WK430-3,0/100P has 100 l, while this one has 90 l. With a difference between the cut-in and cut-out pressure of 2 bar, this means 180 l of free air per cycle compared to 200 l. With a continuous draw of 100 l/min, this results in approximately 24 motor starts per hour compared to 21 for the 100 l version – a difference that is negligible during operation.
Three-phase start-up spares the circuit breaker
2.2 kW at 400 V means a significantly lower starting current than the same motor on a single phase. You do not need a dedicated circuit with a slow-characteristic circuit breaker, and the workshop lights will not flicker every time the motor kicks in. If you do not have a three-phase connection, an identical version VWK430-3,0/90AP for 230 V is available.
Highest specific performance in the range – shared by the entire 2.2 kW class
From a 2.2 kW input, 340 l/min is delivered to the distribution system, which is 154.5 l/min per 1 kW. You will not find a higher value in the WALTER range: all machines in the 2.2 kW class have it, and more powerful platforms do not exceed it. Filling an empty 90l tank to 10 bar takes approximately 2.6 minutes according to our calculations.
Who is it for
A typical owner of the VWK430-3,0/90P is a carpenter, metalworker, or maintenance technician in a workshop up to approx. 40 m², where every wall is occupied by a workbench, shelf, or machine, leaving only one free corner for the compressor. Air does not flow here all day – it is used in bursts: staple, blow off, tighten. For such a regime, 340 l/min is sufficient, and the 90l tank compensates for short peaks.
Typical applications
- Stapler and nail gun in a joinery – consumption 20 to 60 l/min, the tank covers even rapid sequences of shots
- Blow gun for cleaning sawdust off workpieces and machinery
- Pneumatic 3/8" ratchet and drill for repairs and assembly
- Tyre inflation and pressure adjustment in a service area
- Spray gun for smaller parts and doors – in intermittent mode, not for full-day painting
- Pneumatic clamping of a simple fixture or cylinder control on a machine
When to choose a different model
You do not have a three-phase connection in your workshop
Opt for the VWK430-3,0/90AP. It is an identical machine with the same vertical 90l tank and same performance, but on 230 V / 50 Hz. However, allow for a dedicated power circuit and a slow-trip circuit breaker.
You need to move the machine around the workshop or want a significantly larger air reserve
Take the horizontal WK430-3,0/200P. It has the same unit, but a 200l tank on wheels with a handle – double the reserve and wheels for the occasional move. You will pay for this with the required floor space.
You want to grind or chip continuously, not in bursts
340 l/min is not enough for this – an orbital sander and chipping hammer consume 300 to 450 l/min in continuous operation. Stick with the vertical design, but go up a class to the VWK550-4,0/90P with 440 l/min and the same footprint.
What the figures tell you — calculated values
The values are calculated and are meant for comparing the models with each other, not as guaranteed figures.
Design and technology
Related models and alternatives
VWK430-3,0/90AP
The same vertical model on standard 230 V – for workshops without a three-phase connection.
WK430-3,0/100P
Horizontal counterpart with a 100l tank on wheels. Same performance, larger floor space requirement, mobility.
VWK550-4,0/90P
A class higher on the same footprint: 3.0 kW and 440 l/min on the same 90l vertical tank.
WK430-3,0/200P
Same unit with double the reserve – 200 l, horizontal, for when space is not an issue.
Frequently asked questions
- How much floor space does a vertical model actually save?
- A horizontal tank lies lengthwise and its footprint also includes space for wheels and a handle. A vertical tank of the same volume stands on feet, reducing the floor space by approximately half – allowing the machine to be placed against a wall. Exact dimensions, including height, can be found in the technical specifications for the product; before ordering, please measure the clear height of your workshop and its doors, as the vertical version increases the overall height.
- Does the vertical version have a lower performance than the horizontal one?
- It does not. The intake of 420 l/min, delivery of 340 l/min, 1,276 rpm and power input of 2.2 kW are identical for both versions – it is the same unit and the same motor. Only the orientation of the pressure vessel and the resulting installation dimensions differ.
- Why does the vertical model have 90 litres while the horizontal model has 100?
- The vertical tank is a different product with different proportions to ensure the machine remains stable and is not unnecessarily high. A difference of 10 l, with a pressure differential of 2 bar, means 20 l less free air per cycle, which results in approximately 3 additional motor starts per hour. Operationally, this is negligible.
- Do I need to anchor the machine to the floor?
- The vertical version has a higher centre of gravity than the horizontal design, so it stands safely on a flat and firm floor, but it must not be propped up with makeshift supports – do not use blocks under a single foot. Place it on level concrete; for permanent installation in environments with trolley traffic or frequent handling, we recommend anchoring according to the machine's manual.
- How is condensate drained from a vertical tank?
- The advantage of a vertical tank is that water drains naturally to a single lowest point and does not spread across the bottom as it does in a horizontal tank. The drain valve is therefore located at the bottom under the tank – ensure access to it and place a bowl or a hose leading to a collection container underneath. Draining is necessary at least once a week; otherwise, the tank will corrode and water will enter the distribution system.
The machine comes with a 3-year warranty after registration with the importer. Warranty terms, the maintenance schedule and a comparison of all 28 models are in the category WALTER cast-iron piston compressors.
Ventilek’s tip
When the workshop runs out of floor space, go up. Same unit, only the tank stands upright — and there's room left for shelving.
Additional parameters
| Category: | Air compressors |
|---|---|
| Warranty: | 3 years |
| EAN: | 5905122000189 |
| Compressor type: | Piston compressor |
| Pressure: | 10 bars |
| Suction power: | 420 l/min |
| Air delivery: | 340 l/min |
| Pressure vessel volume: | 90 L |
| Design of pressure vessel: | Standing |
| Connecting: | Quick coupling DN 7.2, Ball valve 1/2" |
| Motor power: | 2.2 kW |
| Mains voltage: | 400/50 V/Hz |
| Speeds: | 1,276 rpm |
| Number of cylinders: | 2 |
| Number of grades: | 1 – single-stage compressor |
| Lubrication: | Oleic |
| Noise: | 80dB(A) |
| Dimensions: | 630 × 540 × 1240 mm |
| Weight: | 100 kg |
| Accessories: | Pressure regulator, Wheels, Handle, Quick coupler, Ball cock |
| Engine: | Electric |
| Soundproofed: | No |
| Drive: | V-belts |
| Air dryer: | No |
| Retrieved from: | Professional |
| Development: | Mobile |
Demonstrace výkonu litinového pístového kompresoru GK420-22-100 💪🛠️
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