Spirax Sarco BPS32/BPS32Y are austenitic stainless steel 316Ti balanced pressure steam traps designed for saturated steam systems up to 32 bar g. The BPS32 features a flat strainer screen, while the BPS32Y is equipped with an integral Y-type strainer. An integral check valve and threaded, welded, or flanged connections are available as options. Suitable for condensate drainage from hospital sterilization equipment, steam tracing lines containing impurities, and small jacketed steam equipment.
BPS32 stainless steel steam trap installed view
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Spirax Sarco BPS32/BPS32Y Stainless Steel Balanced Pressure Steam Trap
Stainless steel balanced pressure steam trap for condensate drainage from steam equipment and tracer lines, with optional Y-type strainer.
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Models
All BPS32 series models are 316Ti stainless steel pressure-balanced steam traps, available with threaded, socket weld, butt weld, or flanged connections in sizes from 1/2 inch to 1 inch and DN15 to DN25. BPS32 has a flat strainer and no integral check valve, making it suitable for systems with low contamination and no significant backflow risk. BPS32Y uses a cylindrical Y-type strainer and is suitable for applications with higher contamination levels. BPS32CV adds an integral check valve to the flat-strainer design and is suitable for systems with backflow or back-pressure risks and limited installation space. BPS32YCV combines a Y-type strainer with an integral check valve, making it suitable for complex applications involving both high contamination and backflow risks. All four models can be fitted with the standard STD capsule. Final selection should also consider operating pressure, temperature, size, connection standard, and site conditions.
BPS32Pressure-Balanced Steam Trap with Flat Strainer, Standard Type
BPS32 features an austenitic stainless steel 316Ti body, an integral flat stainless steel strainer, and a standard STD capsule, without an integral check valve. It supports threaded, socket weld, butt weld, and flanged connections and is suitable for steam drainage applications with low contamination, limited installation space, and no significant condensate backflow risk.
BPS32YPressure-Balanced Steam Trap with Y-Type Strainer
BPS32Y features an austenitic stainless steel 316Ti body, an integral cylindrical Y-type stainless steel strainer, and a standard STD capsule, without an integral check valve. The Y-type strainer provides greater debris-holding capacity and is suitable for steam tracing, heat transfer equipment, and related condensate drainage applications that may contain rust, welding slag, and other contaminants.
BPS32CVPressure-Balanced Steam Trap with Flat Strainer and Check Valve
BPS32CV features an austenitic stainless steel 316Ti body, an integral flat stainless steel strainer, a standard STD capsule, and an integral check valve. Compared with BPS32, it adds anti-backflow protection and is suitable for condensate recovery headers, downstream vertical lift piping, or applications where back-pressure reverse flow may occur after shutdown.
BPS32YCVPressure-Balanced Steam Trap with Y-Type Strainer and Check Valve
BPS32YCV features an austenitic stainless steel 316Ti body, an integral cylindrical Y-type stainless steel strainer, a standard STD capsule, and an integral check valve, providing both enhanced contaminant filtration and anti-backflow protection. It is suitable for complex applications where the steam network has a high contamination risk and the condensate recovery system is subject to back pressure, reverse flow, or vertical lift drainage.
Specifications
- Body Design Rating
- PN40
- Maximum Allowable Pressure
- 50 bar g at 50°C
- Maximum Allowable Temperature
- 400°C at 30 bar g
- Minimum Allowable Temperature
- -200°C
- Maximum Operating Pressure for Saturated Steam
- 32 bar g
- Maximum Operating Temperature
- 281°C at 32 bar g
- Minimum Operating Temperature
- 0°C
- Design Cold Hydraulic Test Pressure
- 75 bar g
- Subcooling
- STD type (12°C), NTS type (6°C), SUB type (24°C)
- Body Material
- Austenitic stainless steel 316Ti (DIN 17440 W/S 1.4571)
- Strainer Type
- Flat type (BPS32), Y type (BPS32Y)
- Integral Check Valve
- Optional (BPS32CV / BPS32YCV)
- Connection Type
- Threaded, socket weld, butt weld, flanged
- Connection Size
- 1/2", 3/4", 1" (DN15, DN20, DN25)
- Flange Standard
- EN 1092 PN40, ANSI B 16.5 Class 150/300, JIS/KS 10K/20K
- Thread Standard
- BSP, NPT
- Pressure Equipment Certification
- PED 97/23/EC
- Material Certificate
- EN 10204 3.1
Application scenarios
Steam condensate drainage from hospital sterilization equipment
Used for venting and draining condensate from hospital high-pressure sterilization and disinfection equipment. BPS32 is suitable for space-constrained clean systems with good water quality.
Condensate drainage for industrial steam tracing lines containing contaminants
Used for draining condensate from industrial steam tracing lines where contaminants such as rust and welding slag may be present. BPS32Y is equipped with a built-in Y-type stainless steel strainer and is suitable for heavy-duty industrial steam tracing and outdoor piping networks exposed to high levels of contamination.
Condensate drainage from small jacketed steam equipment
Used for venting and draining condensate from small jacketed steam-heated equipment, removing condensate from the equipment steam chamber or jacket.
Selection points
316Ti Stainless Steel Body for Medium- and High-Pressure Steam Applications
This series features an austenitic stainless steel 316Ti body and is suitable for condensate drainage applications in medium- and high-pressure steam systems.
Pressure-Balanced Capsule and Subcooling Options
This series uses a pressure-balanced capsule and offers STD, NTS, and SUB capsules, discharging condensate at 12°C, 6°C, and 24°C below saturated steam temperature, respectively. The configuration can be selected according to the required condensate discharge temperature.
Integrated Strainer Options for BPS32 and BPS32Y
BPS32 is equipped with an integral flat stainless steel strainer, while BPS32Y is equipped with an integral cylindrical Y-type stainless steel strainer. The appropriate model can be selected based on system contamination risk and filtration requirements.
CV Models with Integral Check Valve
BPS32CV and BPS32YCV incorporate an integral check valve based on their respective standard models. They are suitable for systems requiring prevention of condensate backflow, such as shared condensate recovery headers or applications with vertical lift sections downstream of the outlet.
Multiple Piping Connection Options
This series is available with threaded, socket weld, butt weld, and flanged connections, allowing the appropriate configuration to be selected according to existing piping interfaces and installation conditions.
Installation & maintenance notes
Verify Operating Pressure and Temperature Range
Before installation and commissioning, verify the site steam pressure and temperature to ensure they do not exceed the allowable operating range of BPS32/BPS32Y. The maximum operating pressure for saturated steam is 32 bar g, and the maximum operating temperature at 32 bar g is 281°C.
Confirm Check Valve Configuration and Backflow Risk
The standard BPS32 and BPS32Y models do not include an integral check valve, whereas BPS32CV and BPS32YCV are fitted with an integral check valve. Where shutdown back pressure or condensate backflow is possible, confirm the anti-backflow configuration for the selected model.
FAQ
What is the main difference between BPS32 and BPS32Y, and how should they be selected?
Both are maintainable balanced pressure thermostatic steam traps. The difference is the integral strainer: BPS32 uses a flat stainless steel strainer, while BPS32Y uses a cylindrical Y-type stainless steel strainer. BPS32 may be considered where the pipeline is relatively clean or installation space is limited; BPS32Y is better suited where rust, welding debris, or other contaminants are present.
What applications are BPS32CV and BPS32YCV suitable for?
Both BPS32CV and BPS32YCV incorporate an integral check valve and can be used where condensate backflow must be prevented, such as when multiple units share a condensate recovery header or where a vertical lift line is installed downstream of the steam trap. BPS32CV is fitted with a flat strainer, while BPS32YCV is fitted with a Y-type strainer.
What is the difference between STD, NTS, and SUB capsules?
The three capsule types discharge condensate at different temperature differentials: the STD type discharges at approximately 12°C below saturated steam temperature, the NTS type at approximately 6°C below, and the SUB type at approximately 24°C below. The specific configuration must be confirmed according to the actual model and application conditions.
How can BPS32 and BPS32Y be installed?
Both can be installed horizontally or vertically. When condensate is discharged into a recovery line with back pressure, a check valve is recommended downstream of the steam trap; when discharging to atmosphere, a silencer is recommended. For ease of maintenance, isolation valves are recommended upstream and downstream of the steam trap.
What are the pressure and temperature ranges of the BPS32 series?
The body design rating is PN40, with a maximum allowable pressure of 50 bar g (50°C) and a maximum allowable temperature of 400°C (30 bar g). The maximum operating pressure for saturated steam is 32 bar g, the maximum operating temperature is 281°C (32 bar g), and the minimum operating temperature is 0°C. The specific configuration must be confirmed according to the actual model and application conditions.
Documents
BPS32 and BPS32Y Stainless Steel Balanced Pressure Thermostatic Steam TrapsDatasheet · ChineseBPS32 and BPS32Y Stainless Steel Balanced Pressure Thermostatic Steam TrapsDatasheet · EnglishBPS32 and BPS32Y Stainless Steel Balanced Pressure Thermostatic Steam Traps Installation and Maintenance InstructionsManual · EnglishBPS32 and BPS32Y Stainless Steel Balanced Pressure Thermostatic Steam Traps Installation and Maintenance InstructionsManual · English