Cast iron piston compressor HWK1200-10/500P-15P input power 7.5 kW, suction power 1120 l/min, pressure 15 bar, air receiver 500 l, voltage 400/50 V/Hz
Code: HWK1200-10/500P-15P
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Product detailed description
WALTER HWK1200-10/500P-15P High-Pressure Cast-Iron Piston Compressor – 15 bar
The HWK1200-10/500P-15P achieves the highest pressure in the entire WALTER range – 15 bar. The 4V four-cylinder cast-iron unit with a power input of 7.5 kW (10 HP) has an intake of 1,060 l/min and delivers 900 l/min to the distribution system at 15 bar. At the same time, it has the lowest RPM of all 28 models – 688 min⁻¹. Air receiver 500 l, power supply 400 V / 50 Hz, noise level approx. 80 dB(A). The machine comes with a 3-year warranty after registration at waltercesko.cz.
The combination of 15 bar and a delivery rate of 900 l/min is unique in the range and is aimed at operations where high pressure is a production requirement, not just a safety margin. If your technology tops out at 13 bar, the HWK1200-10/500P version provides 60 l/min more. If you only need a high volume of air at 10 bar, the WK1500-10/500P is the right choice.
Configuration of this machine
Why choose this model
None of the other 28 WALTER models run slower. Compared to the fastest 2.2 kW class (1,276 min⁻¹), the piston ring covers a sliding distance approximately 46% shorter per hour of operation with a comparable piston stroke. This low-speed operation is the reason why this machine can withstand continuous deployment despite the highest pressure.
A 500 l tank pressurised to 15 bar has approximately 3,500 l of free air available over an eight-bar distribution system – the most of all models, as it combines the largest tank with the highest pressure. In practice, this means that even a high-demand short-term draw-off is handled by the tank without the motor even starting.
The 13 bar version delivers 960 l/min, while this one delivers 900. Six per cent of the delivery rate is the total price for two extra bar, as the main drop occurred during the transition from 10 to 13 bar.
900 l/min at 15 bar can power several technologies simultaneously. Distributing compression across four cylinders keeps output pulsations low, which is desirable for pressure and testing applications – the regulator receives a steadier input.
Design and technology
Piston, rings and cast-iron liner
The cast-iron cylinder liner and piston rings are standard service parts — the unit can be refurbished after years of use rather than discarded.
Intake filter with steel mesh
The new generation metal insert withstands repeated blowing out with compressed air, whereas a paper insert would tear after a few cleanings.
Head gaskets and valves
The redesigned cylinder head gaskets maintain pressure even after thermal cycles; valve plates are stocked as spare parts.
Inspection on a 3D measuring machine
Key dimensions of the unit are verified on a coordinate measuring machine — this ensures that parts from different series fit together perfectly.
Technical Data HWK1200-10/500P-15P
What the data sheet doesn't tell you — calculated values
Values are calculated from manufacturer parameters and serve for comparing models with each other, not as a guaranteed figure.
Who is it for
This machine is designed for production facilities or testing laboratories where 15 bar is a technical requirement: production and testing of pressure components, hydraulic and pneumatic elements, lines with presses and forming tools, and pressure testing of larger assemblies. It is purchased by companies that have piping, fittings, and regulation dimensioned for over 10 bar and know exactly what pressure their technology operates at. For a workshop with standard tools, this machine is unnecessarily oversized.
Typical applications
- Pressure and leak testing of assemblies and piping up to 15 bar
- Testing laboratories for hydraulic and pneumatic components
- Production lines with pneumatic presses and forming tools
- Technologies operating at 13 bar that require a reserve above the operating pressure
- Extensive piping networks with high pressure losses
- Simultaneous operation of several outlets where a large reserve is necessary for peak loads
Where to choose a different model
Choose the HWK1200-10/500P: 960 l/min instead of 900. Two bars that you do not utilise otherwise cost you delivery capacity.
View recommended model →The ten-bar WK1500-10/500P delivers 1 100 l/min – 200 l/min more than this machine at the same 7.5 kW input.
View recommended model →The smaller HWK700-5,5/270P-15P delivers 470 l/min at 4.0 kW input – significantly lower requirements for circuit protection and space.
View recommended model →Service and maintenance to maintain the warranty
Inspections may be carried out by an authorised WALTER service centre or by yourself — provided that original parts and fluids are used and proof of purchase is retained.
3 year WALTER warranty
36 months after registration at waltercesko.cz
The warranty is provided by Walter Kompressortechnik Česko s.r.o. (Ostrava). Machine registration extends the warranty to 36 months from the date of purchase; proof of purchase is required to claim the warranty.
- Claim assessment within 14 working days, approved repairs free of charge and completed within 30 days
- After 4 repairs and a further defect, you are entitled to a replacement of the machine with a fault-free one
- You may perform the prescribed inspections yourself — using original parts and providing proof of purchase
Transport and Commissioning
The machine is delivered on a pallet. Before the first start, check the oil level, direction of rotation, and the tightness of connections; after the first 8 hours of operation, tighten the cylinder head bolts to a torque of 25 Nm. Leave the electrical connection to a professional — for three-phase machines, it is necessary to verify the correct phase sequence.
Related models and alternatives
Version of the same machine for 13 bar: 960 l/min at 725 rpm, meaning a 60 l/min higher delivery.
View model →The ten-bar peak of the range: 1 100 l/min at 768 rpm – the highest delivery at 7.5 kW.
View model →15 bar in a smaller class: 4.0 kW, 470 l/min, 270 l tank – for a single workstation.
View model →Frequently asked questions
Is the entire workshop network prepared for 15 bar?
Why does the machine with the highest pressure have the lowest RPM?
How long does it take to pressurise a 500 l tank to 15 bar?
Can I power standard pneumatic tools from it?
Does the high-pressure machine follow the same service schedule?
Additional parameters
| Category: | Compressors for all applications - hobby and industrial |
|---|---|
| Warranty: | 3 years |
| Compressor type: | Piston compressor |
| Pressure: | 15 bar |
| Suction power: | 1 060 l/min |
| Displacement: | 900 l/min |
| Pressure vessel volume: | 500 L |
| Design of pressure vessel: | Lying down |
| Connecting: | Quick coupling DN7.2, Ball valve 1/2" |
| Motor power: | 7.5 kW |
| Mains voltage: | 400/50 V/Hz |
| Speeds: | 688 rpm |
| Number of cylinders: | 4 |
| Number of grades: | 2 – two-stage compressor |
| Lubrication: | Oleic |
| Noise: | 80dB(A) |
| Dimensions: | 2000 x 610 x 1250 mm |
| Weight: | 390 kg |
| Accessories: | Pressure regulator, Wheels, Handle, Quick coupler, Ball cock |
| Engine: | Electric |
| Soundproofed: | No |
| Drive: | V-belts |
| Air dryer: | No |
| Retrieved from: | Professional |
| Development: | Stationary |
| Compressor type: | Piston compressor |
| Pressure: | 13 bar |
| Suction power: | 1,130 l/min |
| Displacement: | 920 l/min |
| Pressure vessel volume: | 500 L |
| Design of pressure vessel: | Lying down |
| Connecting: | Ball valve 1/2" |
| Motor power: | 7.5 kW |
| Mains voltage: | 400/50 V/Hz |
| Speeds: | 768 rpm |
| Number of cylinders: | 4 |
| Number of grades: | 2 stage |
| Lubrication: | Oily |
| Noise: | 80dB(A) |
| Dimensions: | 2000 x 610 x 1250 mm |
| Weight: | 320 kg |
| Accessories: | Ball cock |
| Engine: | Electric |
| Soundproofed: | No |
| Drive: | V-belts |
| Air dryer: | No |
| Retrieved from: | Professional |
| Development: | Mobile |
Demonstrace výkonu litinového pístového kompresoru GK1400-75-500 🏭🔧
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