Spirax Sarco SMC32F and SMC32YF are carbon steel flanged bimetallic steam traps, suitable for DN15, DN20, and DN25 sizes with PN40 and Class 150/300 flanged connections. The products have a maximum operating pressure of 32 bar g and a maximum operating temperature of 350°C, and are fitted with a flat strainer or Y-type strainer respectively. They can be installed horizontally or vertically. Suitable for steam condensate drainage points with complex piping routes or limited installation space.
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Spirax Sarco SMC32F and SMC32YF Carbon Steel Flanged Bimetallic Steam Traps
Carbon steel flanged bimetallic steam traps for condensate drainage from space-constrained pipework, available with a flat or Y-type strainer.
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Models
SMC32F and SMC32YF are Spirax Sarco carbon steel flanged bimetallic steam traps. Both are available in connection sizes DN15, DN20, and DN25, with EN 1092 PN40, ASME B16.5 Class 150, or Class 300 flange standards. They have the same pressure and temperature ranges and support horizontal or vertical installation. The main difference is the built-in strainer configuration: SMC32F uses a flat strainer, while SMC32YF uses a Y-type strainer. During selection, first confirm suitability based on system pressure, temperature, connection size, and flange standard, then select the specific model according to the strainer configuration and site maintenance requirements.
SMC32FSMC32F carbon steel flanged bimetallic steam trap with flat strainer
SMC32F is a Spirax Sarco carbon steel flanged bimetallic steam trap with a built-in flat strainer. Connection sizes are DN15, DN20, and DN25, and available flange standards include EN 1092 PN40, ASME B16.5 Class 150, and ASME B16.5 Class 300. The body is made of carbon steel 1.0619+N ASTM A216 WCB, the cover is carbon steel DIN 17243 C22.8 ASTM A105N, and the bimetallic element uses corrosion-resistant bimetal and stainless steel materials. The maximum allowable pressure is 50 bar g@50°C, the maximum allowable temperature is 400°C@35 bar g, and the maximum operating pressure with saturated steam is 32 bar g@350°C. The trap can be installed horizontally or vertically.
SMC32YFSMC32YF carbon steel flanged bimetallic steam trap with Y-type strainer
SMC32YF is a Spirax Sarco carbon steel flanged bimetallic steam trap with a built-in Y-type strainer. Connection sizes are DN15, DN20, and DN25, and available flange standards include EN 1092 PN40, ASME B16.5 Class 150, and ASME B16.5 Class 300. The body is made of carbon steel 1.0619+N ASTM A216 WCB, the cover is carbon steel DIN 17243 C22.8 ASTM A105N, and the bimetallic element uses corrosion-resistant bimetal and stainless steel materials. The maximum allowable pressure is 50 bar g@50°C, the maximum allowable temperature is 400°C@35 bar g, and the maximum operating pressure with saturated steam is 32 bar g@350°C. The trap can be installed horizontally or vertically.
Specifications
- Maximum allowable pressure
- 50 bar g@50°C
- Maximum allowable temperature
- 400°C@35 bar g
- Minimum allowable temperature
- -60°C
- Maximum operating pressure with saturated steam
- 32 bar g@350°C
- Maximum operating temperature
- 350°C@32 bar g
- Minimum operating temperature
- 0°C
- Maximum designed cold hydraulic test pressure
- 75 bar g
- Flange standards
- EN 1092 PN40, ASME B16.5 Class 150, ASME B16.5 Class 300
- Connection sizes
- DN15, DN20, DN25
- Body material
- Carbon steel 1.0619+N ASTM A216 WCB
- Cover material
- Carbon steel DIN 17243 C22.8 ASTM A105N
- Bimetallic element material
- Corrosion-resistant bimetal and stainless steel Rau Type H46
- Seat material
- Stainless steel BS 970 431 S29
- Strainer material
- Stainless steel AISI 304
- Built-in strainer type
- SMC32F: flat strainer; SMC32YF: Y-type strainer
- Installation orientation
- Any position, horizontal or vertical
- Product certification
- European Pressure Equipment Directive 97/23/EC (PED)
Application scenarios
Steam condensate discharge points with restricted layouts
Suitable for condensate discharge locations in steam systems with complex piping routes or limited installation space. These steam traps can be installed horizontally or vertically, feature integral flanged in-line connections, and are available in DN15, DN20 and DN25 sizes.
Selection points
High-temperature and high-pressure steam operating limits
The maximum operating pressure with saturated steam is 32 bar g@350°C, the maximum operating temperature is 350°C@32 bar g, the maximum allowable temperature is 400°C@35 bar g, and the maximum allowable pressure is 50 bar g@50°C.
Optional built-in strainer configurations
SMC32F is fitted with a flat built-in strainer, while SMC32YF is fitted with a Y-type built-in strainer.
Multiple flange standards and connection size options
The product is available with EN 1092 PN40, ASME B16.5 Class 150, and ASME B16.5 Class 300 flange standards, with connection sizes of DN15, DN20, and DN25.
Installation in any orientation
The product can be installed in any position, supporting horizontal or vertical installation.
Carbon steel body and stainless steel internals
The body is made of carbon steel 1.0619+N and ASTM A216 WCB, the seat is stainless steel BS 970 431 S29, and the strainer is stainless steel AISI 304.
Installation & maintenance notes
Confirm installation orientation and drainage position
SMC32F and SMC32YF support horizontal or vertical installation. The installation position should be confirmed according to the piping layout to facilitate proper condensate drainage.
Verify operating pressure and temperature limits
Before installation, confirm that the actual steam conditions do not exceed the specified pressure and temperature ranges. The maximum operating pressure with saturated steam is 32 bar g@350°C, and the maximum operating temperature is 350°C@32 bar g.
Check flange standard compatibility
Before installation, confirm that the pipeline flange standard matches the product configuration. Available flange standards include EN 1092 PN40, ASME B16.5 Class 150, and ASME B16.5 Class 300.
FAQ
What is the main difference between SMC32F and SMC32YF?
Both are carbon steel integral flanged, maintainable bimetallic steam traps. The main difference is the integral strainer configuration: SMC32F has a flat strainer, while SMC32YF has a Y-type strainer.
What sizes and flange connection options are available for SMC32F and SMC32YF?
Available sizes are DN15, DN20 and DN25. Flange connections are available in EN 1092 PN40, ASME (ANSI) B16.5 Class 150 or ASME (ANSI) B16.5 Class 300. The specific configuration must be confirmed according to the actual model and application conditions.
What are the pressure and temperature ranges of SMC32F and SMC32YF?
The maximum allowable pressure is 50 bar g at 50°C, and the maximum allowable temperature is 400°C at 35 bar g. The maximum operating pressure with saturated steam is 32 bar g at 350°C. The maximum operating temperature is 350°C at 32 bar g, and the minimum operating temperature is 0°C.
How can SMC32F and SMC32YF be installed?
This series can be installed horizontally or vertically. When condensate is discharged into a return line with backpressure, a check valve is recommended downstream of the steam trap. When discharging to atmosphere, a silencer is recommended. For convenient maintenance, isolation valves are recommended upstream and downstream of the steam trap.
What should be considered when maintaining SMC32F and SMC32YF or ordering spare parts?
When ordering spare parts, specify the steam trap model and size. Available spare parts include bimetallic element assemblies, strainers or strainers with gaskets, and cover gasket sets. Do not remove the locknut of the non-detachable bimetallic element, as this will affect the operation of the steam trap.
Documents
SMC32F and SMC32YF Carbon Steel Integral Flanged Bimetallic Steam TrapsDatasheetInstallation and Maintenance Instructions for SMC32, SMC32F, SMC32Y and SMC32YF Carbon Steel Bimetallic Steam TrapsManual · EnglishInstallation and Maintenance Instructions for SMC32, SMC32F, SMC32Y and SMC32YF Carbon Steel Bimetallic Steam TrapsManual · Chinese