The Gestra DK47 is a thermodynamic steam trap featuring a high-quality stainless steel body and an integrated stainless steel strainer. It is available with DN10 to DN25 NPT and BSP threaded connections. The product provides stable operation at a maximum operating pressure of 42 bar g, a maximum allowable temperature of 400 °C, and high-back-pressure conditions of up to 80% of the upstream pressure. It is suitable for condensate drainage from industrial steam pipelines and steam condensate removal in high-temperature, high-pressure steam systems, meeting steam-trapping requirements where high back pressure is present.
Product image of Gestra DK47 thermodynamic steam trap, three-quarter view
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Product image of Gestra DK47 thermodynamic steam trap, three-quarter view
DK47 Thermodynamic Steam Trap | Gestra
Stainless steel thermodynamic steam trap with NPT/BSP threads, DN10–DN25.
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Specifications
- Operating principle
- Thermodynamic
- Maximum operating pressure
- 42 bar g
- Maximum allowable temperature
- 400 °C
- Maximum allowable back pressure
- 80% of upstream pressure
- Connection type
- NPT and BSP (ISO 228/1) threaded connections
- Connection sizes
- DN10, DN15, DN20, DN25
- Body material
- Stainless steel, DIN 1.4027 (ASTM A743 CA40)
- Integrated strainer
- Yes, A182 F304 / DIN 1.4301
Application scenarios
Condensate drainage from industrial steam pipelines
Used for condensate drainage in industrial steam pipelines. It employs a thermodynamic operating principle and provides DN10 to DN25 threaded connection sizes, allowing selection based on the pipe diameter at the drainage point.
Condensate removal from high-temperature, high-pressure steam systems
Used for condensate removal from steam systems operating at a maximum allowable temperature of 400 °C and a maximum operating pressure of 42 bar g. The product has an integrated strainer and can be installed through threaded connections.
Steam trapping under high-back-pressure conditions
Used at steam-system drainage points where back pressure is present. It drains condensate at a maximum allowable back pressure of 80% of the upstream pressure and supports NPT and BSP threaded connections.
Installation & maintenance notes
Limit the maximum allowable back pressure
During commissioning and operation, ensure that the maximum allowable back pressure does not exceed 80% of the upstream pressure.
FAQ
What is the operating principle of the DK47 thermodynamic steam trap?
The DK47 features a stainless steel body and an integrated strainer. Thermodynamic operation separates and discharges steam and condensate, ensuring condensate removal while minimizing steam loss.
What are the key selection differences between the DK47 and DK57?
The DK47 is suitable for applications with different condensate flow rates. The DK57 is also available in low-flow and high-flow versions. The main differences are flow-handling capacity and application conditions. Confirm the specific model based on the actual discharge rate and operating conditions.
What information is available about the connection type and body material of this valve?
The valve uses threaded connections, and the body is made of stainless steel 1.4027. The cover, disc, strainer, and other components are selected from suitable steel materials according to the design, ensuring temperature and pressure resistance appropriate for the operating conditions.
Which key technical parameters and dimensions should be considered for the DK47?
The main parameters include DN, PN, weight, and other specifications. Models DK47-10, DK47-15, DK47-20, and DK47-25 correspond to different nominal sizes and weights. Refer to the table for the specific model and evaluate the selection based on the installation connections and available space.