268.20 EURexcl. VAT · import VAT and duties on delivery
Kromschroder Air/gas ratio control GIK20R02-5B 03155123
Brand Kromschroder
Key specifications
| Nominal diameter (DN) | 20 mm |
|---|---|
| Connection thread | Rp 3/4" female thread |
| Max. inlet pressure | 200 mbar |
| Setting range | 0.005–1.2 mbar |
| Safety feature | zero shut-off |
| Gas/Air ratio | 1:1 |
| Turndown | 1:10 |
| Certification | EN 88, CE |
415.80EUR
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Description
Kromschroder GIK20R02-5B is an air/gas ratio control with a 1:1 ratio, designed for precise gas pressure regulation in burners. It has a nominal diameter of 20 mm (Rp 3/4" female thread), a maximum inlet pressure of 200 mbar, and a pressure range of 0.005–1.2 mbar. The device features a compensation diaphragm and zero shut-off for safety, and is certified to EN 88 and CE standards. It is suitable for natural gas, LPG, and air applications.
Further details
| Application type | medium power industrial and combination burners; boiler houses and heating systems; industrial furnaces, dryers and process installations; burner devices where precise gas/air ratio is required without air preheating |
|---|---|
| Common issues | diaphragm perforation, stuck linkage or drift in calibration |
| Function | maintain the correct proportion of combustion air to fuel gas across the burner's operating range |
| Replacement check | verify the thread or flange connection size, the spring range, and whether the signal is pneumatic or electronic. also check compatibility with the gas valve's servo regulator if the system uses one |
| Selection criteria | based on the burner class (premix or forced draught), the required control range and the connection interfaces to the gas valve and air supply |
Choosing and fitting
When selecting a replacement air/gas ratio control of this type, verify the connection thread or flange size, the pressure range, and the gas/air ratio. Ensure the control's inlet pressure rating matches the system's supply pressure. Check compatibility with the gas valve and air supply interfaces, and confirm whether the signal is pneumatic or electronic. Always compare the original part's markings with the replacement before installation.
Signs of failure
Common failure modes for air/gas ratio controls include diaphragm perforation, stuck linkage, or calibration drift. Symptoms may include poor combustion, flame instability, or incorrect gas/air mixture. Check the diaphragm for damage, inspect linkage movement, and verify calibration against the expected pressure range.
All specifications
| Nominal diameter (DN) | 20 mm |
|---|---|
| Connection thread | Rp 3/4" female thread |
| Max. inlet pressure | 200 mbar |
| Setting range | 0.005–1.2 mbar |
| Safety feature | zero shut-off |
| Gas/Air ratio | 1:1 |
| Turndown | 1:10 |
| Certification | EN 88, CE |
Part numbers
| SKU | 03155123 |
|---|---|
| Additional article | 624.658.067 |
| Model | GIK20R02-5B |
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