The Spirax Sarco SBP30 series comprises stainless steel balanced pressure thermostatic steam traps, available in low- and high-capacity versions with an optional check valve. Suitable for steam systems up to 30 bar g and 285°C, the products are available with threaded, socket weld, or flanged connections. The standard version discharges condensate at 12°C below saturation temperature and is primarily used for condensate removal from steam tracing lines.
SBP30 Sealed Balanced-Pressure Thermostatic Steam Trap Real Product Image 1
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Spirax Sarco SBP30 Stainless Steel Balanced Pressure Thermostatic Steam Trap
Stainless steel balanced pressure thermostatic steam trap for condensate drainage from steam tracing lines, with an optional check valve.
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Models
The SBP30 series consists of Spirax Sarco stainless steel pressure-balanced thermostatic steam traps. Known SKUs include SBP30, SBP30LCV, SBP30H, and SBP30HCV. Product documentation confirms that the series can be configured for low or high capacity and with or without a check valve. Select the capacity according to the actual condensate load and the check valve configuration according to whether backflow prevention is required in the piping system. The documentation does not clearly define the one-to-one relationship between each suffix model and the capacity or check valve configuration. Therefore, except for the basic SBP30 model, the other models are not included in the reliable model consensus.
SBP30SBP30 stainless steel pressure-balanced thermostatic steam trap
SBP30 is a stainless steel pressure-balanced thermostatic steam trap with a maximum operating pressure of 30 bar g and a maximum operating temperature of 285°C. The standard STD filling capsule drains condensate at 12°C below the steam saturation temperature, while the optional SUB filling capsule drains condensate at 24°C below the steam saturation temperature. It is available with BSP or NPT threaded, socket-weld, or flanged connections and must be installed horizontally, with the filling capsule kept horizontal and the cover positioned on top.
Specifications
- Operating Principle
- Balanced-pressure thermostatic
- Condensate Discharge Temperature Characteristics
- The standard version discharges condensate at 12°C below steam saturation temperature; the optional low-temperature version discharges condensate at 24°C below steam saturation temperature
- Maximum Operating Pressure
- 30 bar g
- Maximum Operating Temperature
- 285°C
- Maximum Allowable Pressure
- 50 bar g
- Maximum Allowable Temperature
- 400°C
- Design Pressure Rating
- ANSI 300
- Cold Hydraulic Test Pressure
- 75 bar g
- Connection Type
- BSP or NPT threaded; BS 3799/ANSI B16.11 socket-weld; flanged connections
- Connection Sizes
- 1/2", 3/4"; DN15, DN20
- Flange Standards
- ANSI B16.5 Class 150, ANSI B16.5 Class 300, BS 4504, DIN PN40, DIN PN25, DIN PN16
- Installation
- Install horizontally, with the capsule level and the cover positioned on top
- Capacity Configuration
- Low capacity or high capacity
- Check Valve Configuration
- Available with or without a check valve
- Body Material
- Stainless steel, ASTM A314 Gr 304
- Cover Material
- Stainless steel, ASTM A240 Gr 304
- Seat Material
- Stainless steel, AISI 431
- Available Certificates
- EN 10204 3.1.B certificates are available for the body and cover
Application scenarios
Steam Tracing Line Condensate Drainage
For condensate discharge from steam tracing circuits. The SBP30 is a balanced-pressure thermostatic steam trap. The standard capsule discharges condensate at 12°C below steam saturation temperature; a low-temperature capsule option is also available, discharging condensate at 24°C below saturation temperature.
Selection points
Optional 12°C or 24°C subcooling characteristics
Optional STD or SUB filling capsules: the STD type drains condensate at 12°C below the steam saturation temperature, while the SUB low-temperature type drains condensate at 24°C below the steam saturation temperature. Select the appropriate type according to the allowable condensate subcooling for the process.
Optional low- or high-capacity and check valve configurations
The product is available in low-capacity or high-capacity configurations, with or without a check valve. Select the appropriate configuration according to the condensate load and whether backflow prevention is required.
Multiple piping connection standards and sizes
The product is available with BSP or NPT threads, socket-weld connections, and various flange connection options. Threaded and socket-weld sizes are 1/2 inch or 3/4 inch, while flange sizes are DN15 or DN20. Select a connection compatible with the existing piping interface standard.
Stainless steel body and cover with material certificate options
The body and cover are made of stainless steel. EN 10204 3.1.B certificates can be provided for both the body and cover, making this option suitable for projects requiring material traceability documentation.
Installation & maintenance notes
Maintain the specified installation orientation
SBP30 must be installed horizontally, with the filling capsule kept horizontal and the cover positioned on top.
FAQ
What are the condensate discharge temperature characteristics of the SBP30 sealed balanced-pressure thermostatic steam trap?
The standard “STD” capsule discharges condensate at 12℃ below steam saturation temperature; the optional low-temperature “SUB” capsule discharges condensate at 24℃ below steam saturation temperature. The filling-fluid type should be specified when ordering.
What are the differences between SBP30, SBP30LCV, SBP30H, and SBP30HCV?
SBP30 is the standard low-capacity version without a check valve; SBP30LCV is the low-capacity version with a check valve; SBP30H is the high-capacity version without a check valve; and SBP30HCV is the high-capacity version with a check valve. The specific configuration must be confirmed according to the actual model and application conditions.
What sizes and connection types are available for the SBP30?
1/2-inch and 3/4-inch sizes are available. Connection options include BSP or NPT threads, BS 3799 or ANSI B16.11 socket welds, and DN15 and DN20 flanged connections.
What are the maximum operating pressure and temperature of the SBP30?
The maximum operating pressure is 30 bar g and the maximum operating temperature is 285℃. The maximum allowable pressure is 50 bar g and the maximum allowable temperature is 400℃. Actual operation must also comply with the operating range limitations of the applicable connection type.
What should be considered during SBP30 installation and maintenance?
Install the trap horizontally, with the capsule level and the cover positioned on top, and provide a cooling section upstream. Suitable isolation valves should be installed upstream and downstream. Before maintenance, confirm that the piping has been isolated, depressurized safely, and allowed to cool to ambient temperature. This trap has no spare parts; the complete trap must be replaced during maintenance.