Cast iron WK430 aggregate on base frame input power 2.2 kW, intake 420 l/min, pressure 10 bar, no air receiver, voltage 400/50 V/Hz
Code: WK430-PLATE
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Product detailed description
WALTER WK430P-PLATE cast-iron compressor unit on base frame
WK430P-PLATE is a standalone cast-iron unit with an electric motor on a base frame – supplied without a pressure vessel. The 2V twin-cylinder with a 2.2 kW (3 HP) power input has an intake of 420 l/min, delivers 340 l/min to the distribution system at 10 bar, and runs at 1,276 rpm. 400 V / 50 Hz power supply, V-belt drive, noise level approx. 80 dB(A), 3-year warranty after registration at waltercesko.cz.
It is purchased in two scenarios: either the unit on an otherwise healthy compressor has reached the end of its life and the vessel has a valid inspection, or you are building your own assembly – a soundproof cabinet, a mobile unit, or a second source for an existing distribution system. You are responsible for the vessel, pressure switch, fusing, and inspections; we will be happy to confirm the exact scope of delivery by telephone, as the connection to an existing assembly is always case-specific.
Configuration of this machine
- Cast-iron unit — 2V · 1,276 rpm · single-stage compression
- Unit on base frame — supply your own vessel
- Orientation set by your own tank
- Three-phase 400/50 V/Hz
- Standard pressure of 10 bar for common pneumatic tools
Why choose this model
Entry point to WALTER all-cast-iron construction
It is the lowest power class of WALTER units on a base frame. If you have an older compressor with a functional vessel but a worn-out unit, you only replace the part that wears out – the vessel, wheels, frame, and distribution system remain yours. This is a completely different consideration than purchasing an entire new machine.
Number 430 is the approximate intake – 340 l/min will flow into the distribution system
The number 430 in the designation represents the approximate intake (actually 420 l/min); 340 l/min will flow into your vessel. This corresponds to one tool in intermittent operation: blow-gun, ratchet, stapler, or pneumatic drill. Select the vessel size accordingly – for an intake of 420 l/min, approximately 125 to 210 l is suitable, in practice a 200 l vessel; count on 100 l only for purely intermittent operation.
1,276 rpm – highest speed in the range
This is the highest value in the entire range – common to the whole 2.2 kW class – and it is information you should have beforehand: this unit is designed for intermittent work, not for continuous operation. If you are building a source that is intended to run for hours at a time, go up one or two classes, where the rpm drops significantly.
Frame provides flexibility in placement
The unit on a base frame can be placed on anti-vibration pads, installed in a separate room or inside a cabinet, with the tank positioned elsewhere. This ensures that noise and heat remain where they are not a nuisance. A sufficient supply of cooling air to the finned unit is required.
Who is it for
It is suitable for maintenance personnel, smaller operations, and workshops where the unit on an older compressor with a 100 or 200 l tank has worn out, as well as for those building their own assembly — for example, in an agricultural workshop, on a service trailer, or in a soundproof cabinet in a joinery. It is assumed that you can manage the pressure switch, fusing, and connection to the tank, or that you will leave this to an electrician and service technician. Those who want to simply unpack and switch on the machine should opt for a complete compressor with a tank.
Typical applications
- Replacement of a worn-out unit on a compressor with a 100–200 l tank
- Custom assembly for a soundproof cabinet or a separate room
- Mobile unit on a service trailer or chassis
- Second, smaller source for an existing distribution system as a supplement to the main machine
- Backup unit for operations that cannot afford to be without air
- Integration into a machine or device with its own pressure vessel
When to choose a different model
You want a machine that you can just set up and switch on
The complete compressor of the same class is the WK430-3,0/100P: same unit, 100 l tank, wheels, regulator, and quick-release coupling included. There is no need to solve the inspection, switch, or connection issues.
You do not have a three-phase connection in your workshop
A version for a standard 230 V mains exists – the WK430AP-PLATE with the same delivery of 340 l/min. It is the only unit on a base frame with single-phase power supply.
You need more air or longer cycles
A class higher is the WK550P-PLATE: a 3.0 kW three-cylinder unit with 440 l/min and a lower speed of 1,202 rpm, making it a better choice for more continuous loads.
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
WK430-3,0/100P
A complete machine with the same unit and a 100 l tank – for those who do not wish to manage their own assembly.
WK430AP-PLATE
The same unit for 230 V – the only single-phase version in the unit range.
WK550P-PLATE
A class higher: three-cylinder 3.0 kW with 440 l/min and lower speed – for more continuous loads.
WK430-3,0/200P
The same unit on a 200 l tank: the fewest motor starts in this power class.
Frequently asked questions
- Is the pressure vessel included in the delivery?
- No. P-PLATE denotes a complete cast-iron unit with a motor on a base frame, without a tank. You are responsible for providing the tank, its inspection, and certification – as well as the connection, fusing, and output regulation. The exact scope of delivery will be confirmed by telephone before ordering.
- Can I mount it on my old tank?
- Generally yes, but verify three things: that the tank has a valid inspection and a corresponding maximum pressure, that its volume matches the intake of 420 l/min (roughly 125 to 210 l is reasonable), and that you have a solution for the pressure switch, safety valve, and non-return valve. Leave the connection to someone who specialises in pressure assemblies.
- What size tank should I choose for it?
- As a guide, 0.3 to 0.5 litres of tank volume per 1 l/min of intake, so approximately 125 to 210 l. In practice, this means a 200 l tank; consider 100 l only for intermittent operation, as a smaller tank results in more motor starts per hour – and starts are what cause the most wear on a piston compressor.
- Does the three-year warranty also apply to the unit?
- WALTER warranty conditions are uniform across the range: 3 years (36 months) from the date of purchase upon registration at waltercesko.cz; proof of purchase and adherence to prescribed inspections are required for claims. For a unit without a tank, you are additionally responsible for the correct and safe connection to the tank and for its condition.
- Why does the product URL contain gk420?
- The series was previously sold under the GK designation, and the web addresses remained unchanged so that owners of older machines could find spare parts. WK430 is the current designation for the former GK420 – mechanically, it is the same platform in a new generation. Provide both codes when ordering parts.
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
An old compressor with a sound tank is like a car with a sound body — all it needs is a new engine. Two people can lift this unit onto the frame without a hoist.
Additional parameters
| Category: | Air compressors |
|---|---|
| Warranty: | 3 years |
| Compressor type: | Piston compressor |
| Pressure: | 10 bars |
| Suction power: | 420 l/min |
| Air delivery: | 340 l/min |
| Pressure vessel volume: | It isn't |
| 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: | 610 × 380 × 380 mm |
| Weight: | 41 kg |
| Engine: | Electric |
| Soundproofed: | No |
| Drive: | V-belts |
| Air dryer: | No |
| Retrieved from: | Professional |
| Development: | Stationary |
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