Cast iron piston compressor WK430-3-0/50AP input power 2.2 kW, intake 420 l/min, pressure 10 bar, air receiver 50 l, voltage 230/50 V/Hz

Product detailed description

WALTER WK430-3,0/50AP Cast-Iron Piston Compressor

WK430-3,0/50AP is the entry-level model of the WALTER range, operating on standard 230 V / 50 Hz. Under the belt guard operates a fully cast-iron 2V twin-cylinder with a power input of 2.2 kW, intake of 420 l/min and an effective delivery of 340 l/min at 10 bar, with a unit speed of 1,276 rpm. The tank is horizontal with a volume of 50 l, noise levels approx. 80 dB(A), and a 3-year warranty upon registration at waltercesko.cz.

The letter A in the code means one thing: the machine connects to a single-phase network, so there is no need to arrange a three-phase connection. It is the easiest way to obtain a cast-iron slow-running unit where only standard electrical wiring leads into the workshop — such as in a garage workshop, home joinery, or for a tradesman who transports the machine to job sites. A proper electrical installation is a prerequisite; we address this further below.

Configuration of this machine

• Cast-iron unit — 2V · 1,276 rpm · single-stage compression
• Pressure vessel — 50 l · horizontal
• Horizontal design
• For standard 230 V socket — Does not require a three-phase connection
• Standard pressure of 10 bar for common pneumatic tools

Why choose this model

Who is it for

It is purchased by sole traders or small workshops without a three-phase connection: garage workshops, home joineries, installation companies, small-scale metal fabrication, or car painters for minor repairs. What they have in common is that they need air several times a day for a few minutes, rather than continuously throughout the entire shift. If you have a constant air demand and the machine would run most of the time, it is more practical to opt for a version with a larger tank or a three-phase design — a single-phase motor is the most strained of the entire range due to repeated starts.

Typical applications

• Blowing off parts, workstations, and filters in a small workshop
• Inflating tyres and filling pneumatic components
• Staplers, nailers, and glue guns during installations
• Pneumatic ratchets and drills during disassembly
• Occasional use of an impact wrench on individual joints
• Cleaning and blowing out water and air circuits

When to choose a different model

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

Frequently asked questions

Can it be powered by a standard workshop socket?

It can, but not just any socket. A 2.2 kW motor on 230 V has a high starting current, so it generally requires its own circuit, a circuit breaker with a slow characteristic (usually 16 A, char. C) and a supply line dimensioned according to its length. Always take the exact value from the machine manual and leave the installation to an electrician — incorrect connection to the mains is one of the reasons that voids the warranty.

Can I connect it via an extension lead?

Do not use an extension lead on a reel. A coiled cable heats up under the starting current and creates a voltage drop across its length — the motor may then fail to start against the pressure in the head, and the machine could be damaged. If you cannot do without an extension, have the cable dimensioned according to the length and always unwind it completely.

Does the 230V version have lower performance than the three-phase one?

The parameters of both versions are identical: intake 420 l/min, effective delivery 340 l/min and 1,276 rpm. Therefore, only the connection method and the fusing requirements differ.

How many times per hour will the motor switch on?

With a continuous draw of 150 l/min, the calculation gives approximately 50 starts per hour — the highest number in the 2.2 and 3.0 kW machine group. This is the trade-off for having the smallest tank. If you draw air continuously, choose a version with 100 or 200 l, where the number of starts is two to four times lower.

Can I take it with me on jobs?

The 50 l horizontal tank on wheels is the smallest setup among the series compressors with a tank, and one person can move it across a flat surface. For loading into a car, however, expect to need a second pair of hands — the cast-iron unit is significantly heavier than hobby machines. After each transport, check the oil level and leave the machine standing on a level surface before operation.

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.