GESTRA BK 37, BK 28, BK 29 | ASME & DIN High Pressure

Steam Traps

GESTRA Steam Traps BK 37, BK 28, BK 29 | ASME & DIN High Pressure

Thermostatic/thermodynamic steam trap with corrosion resistant Thermovit® regulator (bimetallic plates) able to withstand waterhammer. With internal strainer and integral non-return valve action. Asbestos-free body gasket (graphite/CrNi). Installation in any position.

The default factory setting enables the steam trap to discharge condensate with virtually no banking-up.

During start-up of the plant the steam trap is completely open. Cold condensate and air are discharged.

As the temperature rises, the bimetallic plates deflect, drawing the stage nozzle towards the closed position.

Just before the condensate reaches saturated steam temperature the orifice will be shut off tight. The thermodynamic effect of the stage nozzle chamber assists in the closing process.

The steam trap provides automatic air-venting at start-up and during operation of the plant. BK 37…, BK 28… and BK 29… can also be used for thermal air-venting.

BK 37, Flanges PN 63 / 100 EN 1092-1
PMA (admissible service pressure)                    [bar]g 100 100 94 80.9 73 44.2
TMA (admissible service temperature)                    [°C] 20 150 265 350 415 500
? PMX (admissible differential pressure)           [barg] 45

Based on EN 1092-1

BK 37, Butt-weld ends to DIN EN 12627, Socket-weld ends to DIN EN 12760
PMA (admissible service pressure)                    [bar]g 100 100 100 85 61 30.9
TMA (admissible service temperature)                    [°C] 20 400 450 470 500 530
? PMX (admissible differential pressure)           [barg] 45

Calculated in accordance with DIN EN 12516-2

BK 28, Flanges PN 100 EN 1092-1
PMA (admissible service pressure)                    [bar]g 100 100 94 80.9 73 44.2
TMA (admissible service temperature)                    [°C] 20 150 265 350 415 500
? PMX (admissible differential pressure)           [barg] 85

Based on EN 1092-1

BK 28, Butt-weld ends to DIN EN 12627, Socket-weld ends to DIN EN 12760
PMA (admissible service pressure)                    [bar]g 100 100 100 85 61 30.9
TMA (admissible service temperature)                    [°C] 20 400 450 470 500 530
? PMX (admissible differential pressure)           [barg] 85

Calculated in accordance with DIN EN 12516-2

BK 29, Flanges PN 160 EN 1092-1
PMA (admissible service pressure)                    [bar]g 160 144 134.8 112 104.3 59.4
TMA (admissible service temperature)                    [°C] 20 400 450 485 500 530
? PMX (admissible differential pressure)           [barg] 110

Based on EN 1092-1

BK 29, Butt-weld ends to DIN EN 12627, Socket-weld ends to DIN EN 12760
PMA (admissible service pressure)                    [bar]g 160 138 110 100 57 44.5
TMA (admissible service temperature)                    [°C] 20 400 491 500 530 540
? PMX (admissible differential pressure)           [barg] 110

Calculated in accordance with DIN EN 12516-2

GESTRA BK 37, BK 28, BK 29 | ASME & DIN High Pressure

Steam Traps

GESTRA: The Ultimate Solution for Industrial Steam & Fluid Control Systems

Premium GESTRA Steam Traps for High-Pressure Industrial Applications

GESTRA Steam Traps BK 37 / BK 37-ASME, BK 28 / BK 28-ASME, and BK 29 / BK 29-ASME are globally recognized solutions for efficient condensate discharge, energy savings, and long-term reliability in high-pressure steam systems. Designed according to DIN and ASME standards, these steam traps deliver superior performance in power plants, refineries, chemical plants, and industrial steam networks.

If you are searching for original GESTRA steam traps, high-pressure steam traps, or ASME steam traps, the BK Series offers proven German engineering with unmatched durability.

GESTRA is a world leader in steam and condensate management technology. The BK Series steam traps are engineered for maximum operational safety, high flow capacity, and minimal maintenance, even under extreme pressure and temperature conditions.

Key Advantages:

  • ✅ High-pressure resistance up to PN 160 / Class 900

  • ✅ Available in DIN (PN) and ASME (Class) standards

  • ✅ Compact, robust, and corrosion-resistant design

  • ✅ Ideal for saturated and superheated steam

  • ✅ Long service life with minimal downtime

PN 63 / Class 400 – DN 15, DN 20, DN 25

The GESTRA BK 37 steam trap is designed for medium to high-pressure steam systems. Its rugged construction ensures reliable condensate removal while preventing steam loss.

Technical Specifications:

  • Pressure Rating: PN 63 / Class 400
  • Nominal Sizes: DN 15, DN 20, DN 25
  • Standard: DIN & ASME
  • Application: Process steam lines, heat exchangers, turbines

PN 100 / Class 600 – DN 15, DN 20, DN 25

The GESTRA BK 28 is built for higher operating pressures, making it ideal for demanding industrial environments requiring stable and efficient condensate drainage.

Technical Specifications:

  • Pressure Rating: PN 100 / Class 600
  • Nominal Sizes: DN 15, DN 20, DN 25
  • Standard: DIN & ASME
  • Application: Power plants, boiler systems, high-pressure steam lines

PN 160 / Class 900 – DN 15, DN 20, DN 25

For extreme pressure applications, the GESTRA BK 29 offers outstanding performance and safety. It is specifically engineered for critical steam processes where reliability is non-negotiable.

Technical Specifications:

  • Pressure Rating: PN 160 / Class 900
  • Nominal Sizes: DN 15, DN 20, DN 25
  • Standard: DIN & ASME
  • Application: Superheated steam, high-pressure turbines, energy sector

GESTRA BK steam traps are widely used in:

  • Power generation plants
  • Oil & gas refineries
  • Chemical & petrochemical industries
  • Pulp & paper industries
  • Food & beverage processing
  • Industrial heating systems

Their ability to operate reliably under high pressure and temperature makes them the preferred choice for engineers and procurement specialists worldwide.

Purchasing original GESTRA BK Series steam traps ensures:

  • Compliance with international standards
  • Maximum energy efficiency
  • Reduced operational costs
  • Long-term system reliability

Avoid counterfeit or low-quality alternatives that may cause steam loss, system damage, or safety risks.

We supply 100% genuine GESTRA steam traps with full technical support and fast delivery. Whether you need DN 15, DN 20, or DN 25, PN 63, PN 100, or PN 160, or ASME Class 400, 600, or 900, we are ready to support your project.

Contact us today for:

  • Best price quotation
  • Technical datasheets
  • Application consultation
  • Bulk and project orders

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