Gestra BK212 is a thermostatic/thermodynamic bimetallic steam trap equipped with a Thermovit® corrosion-resistant stainless-steel bimetallic regulator. The product features a 1.7383 structural-steel body and a wear-resistant titanium-alloy seat, with a nominal pressure rating of PN320/PN630, a maximum allowable temperature of 540°C, and a maximum allowable differential pressure of 275 bar. The trap supports socket-weld or butt-weld connections, incorporates an integral strainer, and integrates check-valve and automatic air-venting functions. It can be installed in any position and is suitable for condensate drainage from high-temperature, high-pressure steam systems, steam-line drainage, and thermodynamic air venting in steam systems.
Gestra BK212 bimetallic steam trap product photo, three-quarter view
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BK212 Bimetallic Steam Trap | Gestra
Thermostatic/thermodynamic bimetallic steam trap with Thermovit regulator, socket weld or butt weld connections.
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After-sales support
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Specifications
- Steam Trap Type
- Thermostatic/thermodynamic bimetallic steam trap
- Applicable Media
- Steam and condensate
- Regulator Type
- Thermovit® corrosion-resistant stainless-steel bimetallic regulator
- Maximum Allowable Differential Pressure
- 275 bar
- Maximum Allowable Pressure
- BK212: 630 bar(g) at 20°C; 261 bar(g) at 540°C
- Maximum Allowable Temperature
- 540°C (BK212, 261 bar(g))
- Nominal Pressure
- PN320/PN630
- Connection Type
- Socket-weld end / butt-weld end
- Connection Size
- DN15, DN20, DN25
- Body Material
- 1.7383 structural steel
- Seat Material
- Wear-resistant titanium alloy
- Sealing Material
- Graphite/CrNi
- Integral Strainer
- Yes
- Check-Valve Function
- Integral check-valve function
- Air-Venting Function
- Automatic air venting for thermodynamic air venting in steam systems
- Installation Orientation
- Can be installed in any position
Application scenarios
Thermodynamic Air Venting in Steam Systems
BK212 is used for thermodynamic air venting in steam systems. Its automatic air-venting function removes non-condensable gases from the steam system.
Steam Trapping in High-Temperature, High-Pressure Steam Systems
BK212 is used for condensate drainage in high-temperature, high-pressure steam systems. The maximum allowable temperature is 540°C, and the maximum allowable pressure under the relevant operating conditions is 261 bar(g). It is suitable for steam and condensate media.
Automatic Condensate Drainage from Steam Lines
BK212 is used for automatic condensate drainage from steam lines. It is suitable for steam and condensate media and can be installed using socket-weld or butt-weld ends.
Installation & maintenance notes
Install in Any Permitted Position
BK212 can be installed in any position.
FAQ
What applications is the Gestra BK212 bimetallic steam trap suitable for?
The BK212 is used for draining and venting steam and condensate systems. It discharges condensate while minimizing steam loss and can also be used for thermal air venting in steam systems.
How does the BK212 work, and what are its functional features?
The BK212 uses a corrosion-resistant Thermovit® Duo stainless steel bimetallic regulator. At start-up the valve is open and discharges condensate; as the condensate temperature rises, the bimetallic strips bend and move the nozzle toward the closed position, and the valve reopens when the temperature drops. The trap features a built-in strainer, an integral check valve function and automatic air venting, and can be installed in any position.
Which connection types and sizes does the BK212 support?
Connection types include socket weld ends and butt weld ends. Available models are BK212-15, BK212-20 and BK212-25, corresponding to DN15, DN20 and DN25, each weighing 16.00 kg. Socket weld and butt weld ends are both available.
What are the materials and pressure/temperature ratings of the BK212?
The standard BK212 has a body and cover made of 1.7383, with a graphite/CrNi seat seal; further design variants include BK212-S, BK212-F91, BK212-F91-SD, BK212-F92-SD and BK212-ASME. Maximum allowable pressure, maximum allowable temperature and permissible differential pressure vary with the design variant and temperature conditions.
How do I confirm the correct BK212 configuration for my application?
For sizing, specify the medium together with its temperature and pressure, the back pressure, the condensate flow rate, the design variant, the end connection type and size, the installation position or the type of steam consumer, and the applicable DIN, EN or ASME standard.