Spirax Sarco HP45 is an in-line maintainable high-pressure bimetallic steam trap for steam systems up to 45 bar g and 425°C. The valve body is made of ASTM A105N steel and features an integral strainer, externally adjustable discharge temperature, and fail-open operation. Available with threaded, welded, and flanged connections, it is suitable for discharging condensate and non-condensable gases from high-pressure steam mains, branch lines, and high-temperature process equipment.
HP45 Bimetallic Steam Trap Real-Scene Photo 5
1 / 5
Spirax Sarco HP45 High-Pressure Bimetallic Steam Trap (In-Line Maintenance)
Bimetallic steam trap for high-temperature, high-pressure steam lines, supporting multiple connection types.
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
- Design Type
- Bimetallic steam trap
- Body Design Conditions
- PN150, Class 900 to ANSI B 16.34
- Maximum Allowable Pressure
- 153 bar g at 38°C
- Maximum Allowable Temperature
- 425°C at 86 bar g
- Minimum Allowable Temperature
- 0°C
- Maximum Operating Pressure
- 45 bar g at 425°C
- Maximum Operating Temperature
- 425°C at 45 bar g
- Minimum Operating Temperature
- 0°C
- Minimum Operating Pressure
- 15 bar g
- Maximum Backpressure
- Not exceeding 90% of the upstream pressure
- Designed Maximum Cold Hydraulic Test Pressure
- 229 bar g
- Connection Types
- Threaded, socket-weld, butt-weld, and flanged connections
- Port Sizes
- 1/2", 3/4", and 1" threads; DN15, DN20, and DN25 flanges
- Thread Standard
- BSP or NPT
- Welding Standards
- Socket-weld ANSI B16.11; butt-weld ANSI B16.25
- Flange Pressure Ratings
- PN63, PN100, or ANSI 600
- Body Material
- Steel, ASTM A105N
- Sealing Material
- Spiral-wound stainless steel with graphite filler, asbestos-free
- Functional Features
- Externally adjustable discharge temperature, built-in strainer, fail-open operation
- Applicable Directive
- European Pressure Equipment Directive 97/23/EC
Application scenarios
Condensate Drainage for High-Pressure Steam Mains and Branch Lines
Suitable for high-pressure steam mains, distribution headers, and pipeline locations prone to condensate accumulation, discharging condensate and non-condensable gases during start-up, shutdown, and operation. Product documentation supports its use in high-temperature, high-pressure steam lines, with a maximum operating pressure of 45 bar g and a maximum operating temperature of 425°C.
Condensate Drainage for High-Temperature, High-Pressure Steam Process Equipment
Suitable for condensate discharge from high-temperature, high-pressure steam process equipment, removing condensate and non-condensable gases. Product documentation explicitly states that this trap is suitable for process drainage and offers threaded, socket-weld, butt-weld, and flanged connection options.
Selection points
High-Temperature, High-Pressure Operating Limits
The valve body is made of ASTM A105N steel, with maximum operating conditions of 45 bar g and 425°C. Suitable for high-temperature, high-pressure steam trapping applications requiring verification against pressure-temperature combinations.
Externally Adjustable Condensate Discharge Temperature with Bimetallic Design
This product is a bimetallic steam trap with an externally adjustable condensate discharge temperature, allowing the condensate discharge temperature to be adjusted according to process requirements.
Fail-Open Design and Online Maintenance
The product fails open and is designated for online maintenance. It also incorporates an internal strainer, making it a selection option for applications requiring continuous drainage and convenient maintenance.
Multiple Connection Types and Port Sizes
Available with threaded, socket weld, butt weld, and flanged connections. Threaded ports are available in 1/2 in., 3/4 in., and 1 in.; flanged ports are available in DN15, DN20, and DN25, corresponding to the specified threaded, welding, and flange standards.
Installation & maintenance notes
Back Pressure Limit Verification
Before installation and commissioning, confirm that downstream back pressure does not exceed 90% of the upstream pressure.
Minimum Operating Pressure Verification
Confirm that the system operating pressure is not lower than 15 bar g.
Operating Temperature and Pressure Range Verification
Confirm that actual operating conditions do not exceed the maximum operating conditions of 45 bar g and 425°C.
FAQ
What service conditions is the HP45 Bimetallic Steam Trap suitable for?
The HP45 is suitable for high-temperature and high-pressure steam lines and process drainage, and is designed for high-pressure applications. During system startup, it rapidly removes air, non-condensable gases, and cold water. The valve remains open in the event of failure to prevent waterlogging in the system.
What connection types and sizes are available for the HP45?
The HP45 is available with 1/2-inch, 3/4-inch, and 1-inch BSP or NPT threaded connections, as well as socket-weld and butt-weld connections. Flanged connection sizes are DN15, DN20, and DN25, with PN63, PN100, or ANSI 600 options. The specific configuration must be confirmed based on the actual model and service conditions.
What are the operating pressure and temperature ranges of the HP45?
The maximum operating pressure is 45 bar g and the maximum operating temperature is 425°C. The minimum operating pressure and minimum operating temperature are both 0°C; conditions outside the corresponding range must be confirmed based on the actual service conditions. Backpressure must not exceed 90% of the upstream pressure.
What are the main materials and structural features of the HP45?
The body and cover are made of steel, material grade ASTM A105N. The bimetallic element is stainless steel, and the strainer is made of AISI 304L stainless steel. The product has a built-in strainer, allows the discharge temperature to be set externally, and supports online maintenance.
Which replacement spare parts are available for the HP45?
Available spare parts include the bimetallic element assembly, a three-piece cover gasket set, a gasket set, and a strainer screen. When ordering spare parts, specify the steam trap model and size. Cover bolts, the screw cap, and the locking nut are not supplied as spare parts.