Gestra BK15 is a thermostatic bimetallic steam trap equipped with an externally adjustable Thermovit stainless steel regulator. Both the body and cover are made of forged steel EN 1.0460 (ASTM A105). The product has nominal sizes DN40 and DN50, a maximum allowable differential pressure of 22 bar, an integrated strainer and check function, and supports flange, threaded, and welded connections. It is suitable for condensate discharge at the ends of steam-system pipelines and in branch sections, high-temperature and high-pressure steam equipment, and steam heat-exchange equipment.
Product image of the Gestra BK15 bimetallic steam trap with double flanges
1 / 3
BK15 Bimetallic Steam Trap | Gestra
Thermostatic bimetallic steam trap with externally adjustable Thermovit regulator, DN40/DN50, 22 bar differential pressure.
Genuine product assurance
We can help verify product data and purchasing details.
Model confirmation
Confirm model, connection and key options before ordering.
After-sales support
After-sales communication support is provided according to the order agreement.
Specifications
- Steam Trap Type
- Thermostatic bimetallic steam trap
- Regulator Type
- Thermovit (Duo stainless steel) regulator, externally adjustable
- Nominal Size
- DN40, DN50 (1 1/2 in, 2 in)
- Connection Types
- EN flanges, ASME flanges, threaded sockets (G, NPT), socket-weld ends, butt-weld ends
- EN Flange Standard
- EN 1092-1, type B1, PN40
- ASME Flange Standard
- ASME B16.5, Class 150 RF, Class 300 RF
- Maximum Allowable Differential Pressure
- 22 bar (319 psi)
- Pressure-Temperature Rating (PN40)
- 40 barg (-10/20°C); 33.3 barg (200°C); 27.6 barg (300°C); 23.8 barg (400°C); 13.1 barg (450°C)
- Pressure-Temperature Rating (Class 300)
- 51.1 barg (-29/38°C); 43.8 barg (200°C); 39.8 barg (300°C); 34.7 barg (400°C); 28.8 barg (425°C)
- Pressure-Temperature Rating (Class 150)
- 19.6 barg (-29/38°C); 13.8 barg (200°C); 10.2 barg (300°C); 6.5 barg (400°C); 5.5 barg (425°C)
- Body Material
- Steel EN 1.0460 (ASTM A105)
- Cover Material
- Steel EN 1.0460 (ASTM A105)
- Seat Seal Material
- Graphite/CrNi
- Regulator Material
- Stainless steel/duplex stainless steel
- Integrated Functions
- Integrated strainer and check function
- Installation Position
- Can be installed in any position
Application scenarios
Condensate Discharge at Steam-System Pipeline Ends and Branch Sections
For condensate discharge at the ends of steam-system pipelines or in branch circuits. Available in DN40 and DN50 sizes, with condensate discharge adjustable through the bimetallic regulator.
Condensate Discharge from High-Temperature and High-Pressure Steam Equipment
For condensate discharge from high-temperature and high-pressure steam equipment. The product has a maximum allowable differential pressure of 22 bar and corresponding pressure-temperature ratings.
Condensate Discharge from Steam Heat-Exchange Equipment
For condensate discharge from steam heat-exchange equipment. Available in DN40 and DN50 sizes, with a steel body and integrated strainer and check function.
Installation & maintenance notes
Pressure, Temperature, and Differential-Pressure Limits
During commissioning and operation, confirm that the medium pressure and temperature comply with the applicable connection standard and pressure-temperature rating. Ensure that the maximum allowable differential pressure across the valve does not exceed 22 bar to prevent operating conditions beyond the application limits from affecting sealing and condensate discharge performance.
Strainer and Seal Maintenance
During maintenance, inspect and clean the integrated strainer, and check the condition of the seat seal and related seals. Replace damaged or failed seals when necessary to maintain filtration and sealing performance.
FAQ
How does the BK15 bimetallic steam trap work?
The BK15 operates on a thermostatic principle: its Thermovit regulator balances the temperature difference between steam and condensate, while the integrated strainer and non-return function discharge the condensate with minimal steam loss.
Which connection types and body materials are available for the BK15?
The BK15 is available with DIN/ANSI flanges, threaded connections, NPT threads, socket-weld ends, and butt-weld ends. The body material is steel (1.0460).
What material is used for the seat seal of the BK15?
The seat seal is made of graphite/CrNi, which meets the demands of corrosion-resistant and high-temperature service.
What are the main specifications of the BK15?
The range comprises the BK15-40 (DN40, PN40, approx. 15 kg) and the BK15-50 (DN50, PN40, approx. 15 kg); both can be fitted with the appropriate connections under EN 1092-1/ASME B16.5.
What additional functions or installation advantages does the valve offer?
The BK15 provides an integrated strainer, a non-return function, an externally adjustable Thermovit regulator, and an asbestos-free body gasket. It can be installed in any orientation, which simplifies on-site layout and maintenance.