Cast iron piston compressor WK430-3-0/200P input power 2.2 kW, intake 420 l/min, pressure 10 bar, air receiver 200 l, voltage 400/50 V/Hz
Code: WK430-3-0/200P
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Product detailed description
WALTER WK430-3,0/200P Cast-Iron Piston Compressor
The WK430-3,0/200P features the largest tank that WALTER builds on its entry-level 2.2 kW cast-iron platform. The 2V twin-cylinder draws in 420 l/min, delivers 340 l/min to the distribution system at 10 bar and runs at 1,276 rpm. It features a 200 l horizontal tank, three-phase 400 V / 50 Hz power supply, noise levels of approx. 80 dB(A) according to manufacturer methodology, and a 3-year warranty upon registration at waltercesko.cz.
This model is not purchased for its power — which is the same as the 50 l version — but for its reserve. 200 l provides 400 litres of free air per cycle, creating a reserve that allows the machine to drive tools with a peak consumption higher than its own delivery. This configuration is designed for workshops where the compressor is permanently stationed and operation is conducted via a distribution system, rather than a hose connected directly to the machine.
Configuration of this machine
- Cast-iron unit — 2V · 1,276 rpm · single-stage compression
- Pressure vessel — 200 l · horizontal
- Horizontal design
- Three-phase 400/50 V/Hz
- Standard pressure of 10 bar for common pneumatic tools
Why choose this model
Lowest number of starts across the entire 2.2 kW platform
400 litres of free air per cycle means approximately 13 starts per hour at a constant consumption of 150 l/min. The 50 l version on the same unit starts approximately 50×, while the 100 l version starts roughly 25×. Those seeking the longest possible service life from this class should opt for the 200 l tank.
Capable of driving tools that consume more than the machine produces
A 1/2" impact wrench can temporarily draw up to 400 l/min, which is 60 l/min more than the unit delivers. The 200 l reserve covers this difference for approximately 6.7 minutes of continuous work — compared to 3.3 minutes with a 100 l tank and only 1.7 with a 50 l tank. This is the primary reason to choose the largest tank.
Tank-to-intake ratio at the upper limit of recommendations
A 200 l tank with a 420 l/min intake provides 0.48 litres of tank capacity per 1 l/min, placing it at the upper end of the recommended range of 0.3 to 0.5 (125 to 210 l for this unit). The unit cannot reasonably fill a larger tank: filling from zero to 10 bar takes 5.9 minutes by our calculation.
Stationary machine for distribution systems
This model also has wheels and a handle, but in practice the 200 l tank is set up in a fixed position and connected to the distribution system with a ball valve and a quick coupling. This is the configuration in which the machine does not switch on unnecessarily often, has good cooling and easy access to the condensate drain — and where its noise level of approx. 80 dB(A) no longer bothers you in the middle of the workshop.
Who is it for
Suitable for small-scale metal fabrication, metalworking shops, joinery or garages where the compressor is permanently installed and air is distributed via piping to one, or at most two, non-simultaneous outlets. Typical profile: tools with high peak but short duration consumption — impact wrenches, blow guns, staplers, tyre inflation. For two people working simultaneously or for continuous grinding and painting, even a 200 l tank is insufficient; in such cases, delivery, not reserve, is the decisive factor.
Typical applications
- 1/2" impact wrench for repeated fastening with short pauses
- Blow guns and cleaning of workpieces in metal fabrication
- Staplers, nailers and pneumatic drills in joinery
- Tyre inflation and pressure tests in service centres
- Pneumatic clamping and simple fixtures in production
- Powering a fixed air distribution system with multiple outlets for non-simultaneous use
When to choose a different model
You need consistently more air, not a larger reserve
The reserve only handles peaks. If your tool consumes more than 340 l/min continuously, no tank can fix it — you need a higher delivery rate. The 3.0 kW three-cylinder platform delivers 440 l/min at a lower 1,202 rpm and, with the same 200 l tank, is the direct step up from this machine.
You want to move the machine around the workshop
The 200 l tank is practically stationary in this class. If you need to move the machine to the job, choose the WK430-3,0/100P version: it has half the reserve, but it is a completely different machine in terms of dimensions.
You do not have a three-phase connection in your workshop
The WK430-3,0/200AP is the same configuration on standard 230 V. Prepare for a dedicated circuit, a slow-trip circuit breaker, and a supply cable dimensioned according to the line length.
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
WK430-3,0/200AP
Same configuration on standard 230 V — the maximum you can get from a single-phase network.
WK430-3,0/100P
A smaller and more mobile machine on the same unit, if a half-size reserve is sufficient for you.
WK550-4,0/200P
Same tank, but a 3.0 kW three-cylinder unit with 440 l/min and lower rpm.
VWK430-3,0/90P
The opposite extreme of the same platform: a vertical 90 l tank and half the floor space requirement.
Frequently asked questions
- Why the largest tank on the smallest unit of the range?
- Because the tank and the power serve two different purposes. The delivery rate of 340 l/min determines how much air the machine produces per minute; 200 l determines how long it can sustain a higher demand. For a workshop with intermittent but heavy demand, this combination is more advantageous than a smaller tank on a more powerful motor, because the motor switches on less frequently.
- How long does it take to fill the 200 l tank?
- The calculation gives approximately 5.9 minutes from zero to 10 bar without consumption — the longest time among all models of this platform for 10 bar. Keep this in mind in the morning during the first start-up. Throughout the day, the tank is only topped up by 2 bar, which is a matter of tens of seconds.
- How many times per hour does the motor switch on?
- With a continuous draw of 150 l/min, there are approximately 13 starts per hour. For the 100 l version, it is about 25, and for the 50 l version, roughly 50. The calculation is based on a 2 bar difference between the cut-in and cut-out pressure and the fact that the machine fills while you are drawing air simultaneously.
- Is this model better, or the more powerful 3.0 kW with 100 l?
- It depends on the nature of your air consumption. If you have short, high-volume draws (impact wrench, blow gun, inflation), the 200 l capacity of this machine wins. If you draw air continuously over a longer period (grinder, spray gun), the higher delivery rate of 440 l/min from the WK550 three-cylinder platform wins, even with half the tank capacity.
- How often should condensate be drained from a 200 l tank?
- At least once a week, and more frequently for a large tank in continuous operation. The larger the volume, the more condensate accumulates, and water in the tank is the fastest route to internal corrosion. Draining is also part of the mandatory maintenance on which the warranty validity depends.
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
Small motor, big tank: it makes up with reserve what it lacks in power. It takes short, heavy bursts without moaning.
Additional parameters
| Category: | Air compressors |
|---|---|
| Warranty: | 2 years |
| EAN: | 5905122000080 |
| Compressor type: | Piston compressor |
| Pressure: | 10 bars |
| Suction power: | 420 l/min |
| Air delivery: | 340 l/min |
| Pressure vessel volume: | 200 L |
| Design of pressure vessel: | Lying down |
| 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: | 1550 × 560 × 1000 mm |
| Weight: | 129 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 |
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