Cast iron piston compressor WK430-3-0/200AP input power 2.2 kW, intake 420 l/min, pressure 10 bar, air receiver 200 l, voltage 230/50 V/Hz
Code: WK430-3-0/200AP
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Product detailed description
WALTER WK430-3,0/200AP cast-iron piston compressor
The WK430-3,0/200AP is the largest compressor in the WALTER range available for a standard single-phase network. The all-cast-iron 2V twin-cylinder with a power input of 2.2 kW has an intake of 420 l/min and provides 340 l/min of effective delivery at 10 bar, with a unit speed of 1,276 rpm. The horizontal tank has a capacity of 200 l, power supply 230 V / 50 Hz, noise level approx. 80 dB(A), and a 3-year warranty after registration at waltercesko.cz.
Those without a three-phase connection face a power ceiling defined by a single 2.2 kW platform — and the only variable remaining to influence is the tank size. This model is that ceiling: a 200 l reserve is the maximum installed on a 230V machine in this range. It is ideal for applications where tools draw air in short, high-volume bursts, with time between operations for the system to recharge.
Configuration of this machine
- Cast-iron unit — 2V · 1,276 rpm · single-stage compression
- Pressure vessel — 200 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
Maximum output available from a standard socket
Within the 28-model range, only 5 machines are available for 230 V, and all are based on the same 2.2 kW unit. You are not choosing power, but capacity — and 200 l is the highest available value here. Higher power necessitates a 400 V connection; there is no other way.
Start the machine in the morning before the shift begins
Filling an empty 200 l tank from zero to 10 bar takes approximately 5.9 minutes by our calculation — the longest time among all 230V models in the range. During the day, the machine only re-pressurises by 2 bar, which takes tens of seconds. The second advantage of a large tank is evident during intermittent work: after the morning pressurisation, it maintains pressure for several hours if the distribution system is airtight.
Fewest starts among the 5 models for 230 V
At a continuous draw of 150 l/min, there are approximately 13 starts per hour, compared to 25 for the 100 l version and 50 for the 50 l version. For a single-phase motor, where the entire starting current passes through one circuit, a lower number of starts is the best possible scenario for both the machine and the electrical installation.
Cast-iron mechanics and vented cylinder head
The unit is all cast iron, featuring a machinable cylinder liner and replaceable rings. The bleed valve relieves the cylinder head upon stopping, ensuring the motor starts next time without back-pressure in the delivery line — a lower starting current is critical for 230V machines to prevent the circuit breaker from tripping.
Who is it for
This is purchased by workshops or repair shops that remain on a single-phase electrical installation but have long since outgrown a hobby compressor: garage-based car repair shops with regular tyre changes, installation companies with fixed premises, small joineries, or agricultural and gardening operations. The machine is placed in position and connected to the distribution network. Anyone requiring a continuous delivery of over 340 l/min or simultaneous use by two people must opt for a 400 V connection — there are no further options available in the single-phase range.
Typical applications
- Tyre changes and 1/2" impact wrenches in garage workshops with pauses between wheels
- Underbody preservation and cavity spraying on a smaller scale
- Winterising equipment and blowing out water pipes
- Inflating tyres, including larger commercial vehicle dimensions
- Pneumatic ratchets and drills during disassembly
- Blowing and cleaning parts before painting or gluing
When to choose a different model
You require a continuous delivery of over 340 l/min
Tank capacity does not solve this problem; the output must increase — which necessitates a 400 V connection. The next step is a 3.0 kW three-cylinder platform with 440 l/min; with the same 200 l tank, you get the same reserve and a performance increase of 100 litres per minute.
The workshop is small and a 200 l tank will not fit
The vertical VWK430-3,0/90AP also runs on 230 V and occupies roughly half the floor space. However, it has less than half the reserve, so expect significantly more frequent motor starts.
You have the option to install a three-phase connection
The WK430-3,0/200P version is mechanically the same machine, designed for 400 V. The starting current is split across three phases, eliminating the requirement for a dedicated circuit and opening the way to more powerful machines in the range should operations expand.
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
WK430-3,0/100AP
The most balanced 230V variant: half the reserve, but a significantly smaller machine.
WK430-3,0/200P
Identical configuration for 400 V — without the need for a dedicated circuit and slow-trip circuit breaker.
VWK430-3,0/90AP
The only vertical version for 230 V, for workshops with limited floor space.
WK550-4,0/200P
Same tank, one class higher performance — the first step up, but available only for 400 V.
Frequently asked questions
- Does the large tank strain the single-phase motor?
- It does not. The motor operates consistently — it delivers 340 l/min regardless of whether it is filling a 50 or 200-litre tank. What causes wear are the starts, and this version has the fewest among all 5 single-phase models: approximately 13 per hour at a draw of 150 l/min. The only trade-off is a longer initial pressurisation.
- What circuit protection and power supply does the machine require?
- A dedicated electrical circuit, a circuit breaker with a slow characteristic (usually 16 A, char. C) and a power supply dimensioned according to the cable length. Refer to the machine manual for precise values and leave the installation to a qualified electrician. Incorrect connection to the mains is among the reasons that void the warranty, so it is not worth saving on this.
- Can I connect it to an extension lead or a socket shared with a cooker on the same circuit?
- Neither. An extension lead on a reel heats up under the starting current and its length causes a voltage drop, meaning the motor may not start against the head pressure. Sharing a circuit with another high-power appliance leads to the circuit breaker tripping exactly when the compressor switches on. A dedicated circuit is a fundamental requirement.
- How much air can I actually get from it?
- 340 l/min flows into the distribution system, which is the effective delivery; the number 430 in the name is the approximate intake of the unit (actually 420 l/min) and the ratio between them is about 81%. Always size your tools according to 340 l/min. Add up only those that will run simultaneously and continuously, add 30% for leaks in the distribution system, and compare.
- How is the machine transported and installed?
- It is delivered by pallet; the wheels and handle are for moving it across a flat floor in the workshop, not for unloading. Ensure you have assistants or a trolley and inspect the shipment before signing. Place the machine on a level surface with space for unit cooling; check the oil level before the first start and tighten the cylinder heads to a torque of 25 Nm after the first 8 hours of 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.
Ventilek’s tip
Two hundred litres on a standard socket — you won't squeeze more reserve out of one phase. The motor puts in a shift, then has a long rest.
Additional parameters
| Category: | Air compressors |
|---|---|
| Warranty: | 3 years |
| EAN: | 5905122000097 |
| 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: | 230/50 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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