268.20 EURexcl. VAT · import VAT and duties on delivery
Kromschroder Gas pressure regulator GDJ25R04-0Z 03155068
Brand Kromschroder
Key specifications
| Nominal diameter (DN) | 25 mm |
|---|---|
| Connection thread | Rp 1" |
| Max. inlet pressure | 400 mbar |
| Setting range | 5–160 mbar |
| Purpose | maintain a constant outlet pressure |
| Safety feature | zero closure |
| Temperature range | -20°C to +60°C |
| Operating principle | spring-loaded gas pressure reducer |
| Compliance | EN 88, EN 334, CE |
| Turndown | 10:1 |
| Ambient temperature | -20–60 °C |
| Weight | 1000 g |
| Safety class | 2 |
| Component type | Gas pressure regulators |
| Reliability | proven reliability |
| Standard setting | 12.5–25 mbar |
| Quality | german quality honeywell kromschröder |
| Venting arrangement | no vent line required |
| Application | natural gas, liquefied gas, air |
| Safety diaphragm venting | built-in safety diaphragm |
| Inlet pressure compensation | with inlet pressure compensation |
| Vent line | no vent line required |
| Regulation accuracy | high regulation accuracy |
| Safety standard | class a, group 2 |
| Gas type compatibility | natural gas, liquefied gas, air |
| Certification | CE |
413.40EUR
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Description
The Kromschroder GDJ25R04-0Z is a spring-loaded gas pressure regulator with inlet pressure compensation, designed to maintain a constant outlet pressure. It features a built-in safety diaphragm and zero closure, and requires no vent line. Suitable for natural gas, liquefied gas, and air, it has a nominal diameter of 25 mm (Rp 1" connection), a maximum inlet pressure of 400 mbar, and an outlet pressure range of 5–160 mbar (standard setting 12.5–25 mbar). Operating temperature range is -20°C to +60°C, weight is 1000 g, and it complies with EN 88, EN 334, and CE standards.
Further details
| Installation notes | check that the regulator is oriented correctly (flow direction arrow on the body) and that the vent port is not blocked |
|---|---|
| Installation notes | check that the regulator is oriented correctly (flow direction arrow on the body) and that the vent port is not blocked |
| Installation notes | check that the regulator is oriented correctly (flow direction arrow on the body) and that the vent port is not blocked |
| Maintenance Requirement | easy installation, adjustment and minimal maintenance |
| Maintenance notes | over time, diaphragm fatigue, dirt in the pilot valve, or corrosion can cause drifting outlet pressure or leakage. many regulators allow replacement of the diaphragm or the complete cartridge without removing the body from the pipework |
| Maintenance notes | over time, diaphragm fatigue, dirt in the pilot valve, or corrosion can cause drifting outlet pressure or leakage. many regulators allow replacement of the diaphragm or the complete cartridge without removing the body from the pipework |
| Maintenance notes | over time, diaphragm fatigue, dirt in the pilot valve, or corrosion can cause drifting outlet pressure or leakage. many regulators allow replacement of the diaphragm or the complete cartridge without removing the body from the pipework |
| Replacement check | ensure the new unit matches the original's connection size and pressure rating; mismatching can cause poor burner performance or unsafe operation |
| Replacement check | ensure the new unit matches the original's connection size and pressure rating; mismatching can cause poor burner performance or unsafe operation |
| Replacement check | ensure the new unit matches the original's connection size and pressure rating; mismatching can cause poor burner performance or unsafe operation |
| Typical use | medium boiler houses and heating systems; industrial burners and heat generators; gas appliances and process lines; production equipment with moderate gas consumption |
| Typical use | medium boiler houses and heating systems; industrial burners and heat generators; gas appliances and process lines; production equipment with moderate gas consumption |
| Typical use | medium boiler houses and heating systems; industrial burners and heat generators; gas appliances and process lines; production equipment with moderate gas consumption |
| Verification after installation | always test the lock-up pressure after servicing to confirm the regulator holds the set point correctly |
| Verification after installation | always test the lock-up pressure after servicing to confirm the regulator holds the set point correctly |
| Verification after installation | always test the lock-up pressure after servicing to confirm the regulator holds the set point correctly |
Choosing and fitting
When selecting a gas pressure regulator of this type, ensure the nominal diameter and connection thread match the existing pipework (e.g., Rp 1"). Verify the maximum inlet pressure and required outlet pressure range are within the regulator's specifications. Check the gas type compatibility (natural gas, liquefied gas, air) and temperature range. Installation must follow the flow direction arrow on the body, and the vent port (if present) must not be blocked. For regulators without a vent line, ensure the built-in safety diaphragm is intact.
Signs of failure
Common failures include diaphragm fatigue, dirt in the pilot valve, or corrosion, leading to drifting outlet pressure or leakage. Symptoms may include unstable burner operation, fluctuating gas pressure, or failure to maintain set point. Check the regulator for proper lock-up pressure after servicing, and inspect the diaphragm and valve seat for wear or contamination.
All specifications
| Nominal diameter (DN) | 25 mm |
|---|---|
| Connection thread | Rp 1" |
| Max. inlet pressure | 400 mbar |
| Setting range | 5–160 mbar |
| Purpose | maintain a constant outlet pressure |
| Safety feature | zero closure |
| Temperature range | -20°C to +60°C |
| Operating principle | spring-loaded gas pressure reducer |
| Compliance | EN 88, EN 334, CE |
| Turndown | 10:1 |
| Ambient temperature | -20–60 °C |
| Weight | 1000 g |
| Safety class | 2 |
| Component type | Gas pressure regulators |
| Reliability | proven reliability |
| Standard setting | 12.5–25 mbar |
| Quality | german quality honeywell kromschröder |
| Venting arrangement | no vent line required |
| Application | natural gas, liquefied gas, air |
| Safety diaphragm venting | built-in safety diaphragm |
| Inlet pressure compensation | with inlet pressure compensation |
| Vent line | no vent line required |
| Regulation accuracy | high regulation accuracy |
| Safety standard | class a, group 2 |
| Gas type compatibility | natural gas, liquefied gas, air |
| Certification | CE |
Part numbers
| SKU | 03155068 |
|---|---|
| Additional article | 624.658.055 |
| Model | GDJ25R04-0Z |
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