Indirect-heating boiler
With a single coil
All the water is heated right to the bottom
- Volume: 100—5000 L
- Models: 14
- Vessel: 6 bar
Three-pass steam boiler
VPKS series
Dry steam at peak load draws
A small water volume and large steam space hold stable pressure under sharp steam draws. Built to TRD and TS EN 12953: 0.5–20 bar saturated steam, superheated steam up to 400 °C.
500—35 000kg/h
Steam
28
Models
326—22 791kW
Output
up to 20bar
Pressure
up to 91%
Efficiency
Design
Dry steam at peak load draws
01
Three flue-gas passes
Furnace load below 1.3 MW/m³ — high efficiency and low emissions.
02
Small water volume
Fast start-up and drier steam at peak draws.
03
Corrugated furnace tube
Extra furnace strength and resistance to thermal stress.
04
Efficiency up to 91%
An economiser adds up to 5% more from flue-gas heat.
Model range · Volume, litres
Technical parameters
Technical parameters
The full model range. The table scrolls horizontally.
Technical parameters
| Model | VPKS-500 | VPKS-1000 | VPKS-1500 | VPKS-2000 | VPKS-2500 | VPKS-3000 | VPKS-3500 | VPKS-4000 | VPKS-4500 | VPKS-5000 | VPKS-5500 | VPKS-6000 | VPKS-7000 | VPKS-8000 | VPKS-9000 | VPKS-10000 | VPKS-11000 | VPKS-12000 | VPKS-13000 | VPKS-14000 | VPKS-15000 | VPKS-16000 | VPKS-18000 | VPKS-20000 | VPKS-25000 | VPKS-27000 | VPKS-30000 | VPKS-35000 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Steam output (kg/h) | 500 | 1000 | 1500 | 2000 | 2500 | 3000 | 3500 | 4000 | 4500 | 5000 | 5500 | 6000 | 7000 | 8000 | 9000 | 10000 | 11000 | 12000 | 13000 | 14000 | 15000 | 16000 | 18000 | 20000 | 25000 | 27000 | 30000 | 35000 |
| Output (kW) | 326 | 651 | 977 | 1302 | 1628 | 1953 | 2279 | 2605 | 2930 | 3256 | 3581 | 3907 | 4558 | 5209 | 5860 | 6512 | 7163 | 7814 | 8465 | 9116 | 9767 | 10419 | 11721 | 13023 | 16279 | 17581 | 19535 | 22791 |
| DiameterD (mm) | 1500 | 1700 | 1750 | 1900 | 2000 | 2100 | 2170 | 2230 | 2290 | 2350 | 2430 | 2500 | 2600 | 2700 | 2800 | 2900 | 2975 | 3050 | 3140 | 3220 | 3300 | 3430 | 3550 | 3600 | 3900 | 3900 | 4300 | 4600 |
| HeightH (mm) | 1900 | 2100 | 2200 | 2400 | 2500 | 2600 | 2660 | 2720 | 2790 | 2850 | 2930 | 3000 | 3100 | 3200 | 3300 | 3400 | 3475 | 3550 | 3650 | 3730 | 3800 | 3940 | 4050 | 4100 | 4400 | 4400 | 4900 | 5300 |
| LengthL (mm) | 2700 | 3200 | 3600 | 4770 | 4920 | 5020 | 5150 | 5270 | 5400 | 5520 | 5800 | 6070 | 6220 | 6370 | 6650 | 6920 | 7120 | 7320 | 7470 | 7620 | 7770 | 7830 | 7880 | 8070 | 8580 | 8930 | 7750 | 8850 |
| Base lengthI (mm) | 2100 | 2500 | 2800 | 3720 | 3850 | 3990 | 4110 | 4230 | 4350 | 4470 | 4720 | 4970 | 5120 | 5270 | 5520 | 5770 | 5920 | 6070 | 6190 | 6310 | 6420 | 6450 | 6480 | 6670 | 7130 | 7480 | 6350 | 7100 |
| Axis heighth (mm) | 1200 | 1300 | 1400 | 1450 | 1500 | 1530 | 1600 | 1660 | 1730 | 1790 | 1810 | 1820 | 1900 | 1970 | 1970 | 1970 | 2050 | 2130 | 2190 | 2250 | 2300 | 2370 | 2440 | 2500 | 2680 | 2680 | 3220 | 3300 |
| Flued (mm) | 200 | 250 | 300 | 350 | 350 | 400 | 450 | 450 | 500 | 550 | 550 | 600 | 650 | 650 | 700 | 700 | 750 | 800 | 800 | 850 | 850 | 850 | 900 | 1000 | 1100 | 1150 | 1150 | 1250 |
| Support widthP (mm) | 1100 | 1350 | 1400 | 1450 | 1500 | 1500 | 1550 | 1600 | 1650 | 1700 | 1750 | 1800 | 1870 | 1930 | 1990 | 2050 | 2095 | 2140 | 2180 | 2220 | 2250 | 2330 | 2400 | 2430 | 2700 | 2700 | 3000 | 3700 |
| BaseR (mm) | 1400 | 1700 | 2000 | 2850 | 2980 | 3100 | 3200 | 3300 | 3400 | 3500 | 3750 | 4000 | 4160 | 4300 | 4500 | 4700 | 4850 | 5000 | 5150 | 5280 | 5400 | 5400 | 5400 | 5600 | 6000 | 6350 | 5300 | 5500 |
| Flue-gas resistance (mbar) | 3,5 | 4 | 5 | 6 | 6,5 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7,5 | 8 | 8 | 8 | 8,5 | 9 | 9,5 | 10 | 10 | 10,5 | 11 | 11 | 12 | 12 | 12 | 13 |
| Water volume (m³) | 2,6 | 3 | 4,2 | 5,8 | 6,4 | 7,6 | 7,9 | 8,2 | 8,7 | 9,9 | 11,6 | 13,1 | 14,4 | 15,4 | 17,1 | 18,7 | 20,2 | 21,9 | 23,7 | 25,4 | 27,7 | 28,2 | 29,5 | 32,4 | 39,1 | 43,1 | 42,2 | 53,1 |
Manufactured to TRD · TS EN 12953.
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