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2. "-C-" is Alloy Steel(A182)

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Bi-Metallic

Bi-Metallic Steam Trap

The WPN Series Bi-Metallic Steam Traps are used in steam tracing, steam main drips and non-critical process equipment. They can be used with superheated steam or on outdoor applications that are subject to freezing. The WPN Series Traps are available in multiple sizes and pressures up to 2,260 PSI.

Model Body Material PMO
(PSIG)
Sizes Connections Pressure Controller Max Diff.
Pressure (PSI)

WPN-40

A105 Carbon Steel 470 1/2" - 2"

NPT, 150# or 300# FLG, SW, BW

 R22

 320

 R32

 460

WPN-63

A182-F12CL2 Alloy Steel

823 1/2", 3/4", 1" NPT, 300# FLG, SW, BW  R56  810

WPN-100

A182-F12CL2 Alloy Steel

1220 1/2", 3/4", 1" NPT, 600# FLG, SW, BW  R90  1200

WPN-160

A182-F12CL2 Alloy Steel

1620 1/2", 3/4", 1" NPT, 900# FLG, SW, BW   R130  1600

WPN-250

A182-F12CL2 Alloy Steel

2260 1/2", 3/4", 1" NPT, 1500# FLG, SW, BW   R150  2230

How It Works: WPN Series

When the system is cold, the trap is fully open; discharging air and cold condensate. When the bi-metallic plates inside the trap heat up, they expand; pulling the seat closed and restricting Flow. Prior to steam temperature being reached, the trap shuts off tightly. Cooler temperatures cause the seat to open further. Therefore, trap capacity will increase when colder condensate is in contact with the Bi-metal element. Trap capacity is therefore given at different temperatures below saturated steam temperature.

How To Size: WPN Series

The capacity charts show the maximum flow at factory setting.
Curve Flow of Condensate at approx. 18 & 27 °F below boiling temperature.
Curve  Flow of Sub-Cooled Condensate at approx. 54°F below boiling temperature. (through back up of condensate)
Curve  Flow of Cold Condensate at about 68°F (during start-up of a cold system).
Cooler temperatures cause the seat in the controller to open wider; therefore, trap capacity will increase when colder condensate is in contact with the Bi-metal element. Trap capacity is given at different temperatures below saturated steam temperature.

WPN 40 Series


WPN 63 Series


WPN 100 Series


WPN 160 Series


WPN 250 Series


DRIP, TRACING: WPN-40 series are available in sizes 1/2" - 2" and pressure up to 470 psig. They offer 2 different pressure controllers; max diff. pressure up to 320psi (R22) and up to 460psi (R32), respectively. They are extremely robust and reliable, making them a suitable choice for superheated steam, high pressure applications, as well as outdoor applications that are subject to freezing.

ModelSizeTypeMax PMO (psig)Max Capacity @ Max PMO (lb/h)Strainer Type
WPN40-A-R22-12-F150-ES1/2"150# FLG319External
WPN40-A-R22-13-F150-ES3/4"150# FLG319External
WPN40-A-R22-13-N-ES3/4"NPT319External
WPN40-A-R22-13-SW-IS3/4"Socket Weld319Internal
WPN40-A-R22-14-F300-ES1"300# FLG319External
WPN40-A-R22-14-N-ES1"NPT319External
WPN40-A-R22-14-SW-IS1"Socket Weld319Internal
WPN40-A-R22-17-BW-ES2"Butt Weld319External
WPN40-A-R22-17-F300-ES2"300# FLG319External
WPN40-A-R22-17-SW-ES2"Socket Weld319External
WPN40-A-R32-12-BW-ES1/2"Butt Weld464External
WPN40-A-R32-12-F150-ES1/2"150# FLG464External
WPN40-A-R32-13-F300-IS3/4"300# FLG464Internal
WPN40-A-R32-13-N-IS3/4"NPT464Internal
WPN40-A-R32-14-N-IS1"NPT464Internal
WPN40-A-R22-12-F150-IS1/2"150# FLG319Internal
WPN40-A-R22-12-F300-ES1/2"300# FLG319External
WPN40-A-R22-14-F300-IS1"300# FLG319Internal
WPN40-A-R22-16-F150-IS1 1/2"150# FLG319Internal
WPN40-A-R22-17-F150-ES2"150# FLG319External
WPN40-A-R32-12-SW-ES1/2"Socket Weld464External
WPN40-A-R32-12-SW-IS1/2"Socket Weld464Internal
WPN40-A-R32-13-F150-ES3/4"150# FLG464External
WPN40-A-R32-14-F150-IS1"150# FLG464Internal
WPN40-A-R32-14-F300-IS1"300# FLG464Internal
WPN40-A-R32-16-F150-ES1 1/2"150# FLG464External
WPN40-A-R32-16-F150-IS1 1/2"150# FLG464Internal
WPN40-A-R32-16-F300-ES1 1/2"300# FLG464External
WPN40-A-R32-16-F300-IS1 1/2"300# FLG464Internal
WPN40-A-R32-16-N-ES1 1/2"NPT464External
WPN40-A-R32-16-N-IS1 1/2"NPT464Internal
WPN40-A-R32-17-SW-ES2"Socket Weld464External
WPN40-A-R22-12-BW-ES1/2"Butt Weld319External
WPN40-A-R22-12-F300-IS1/2"300# FLG319Internal
WPN40-A-R22-12-SW-ES1/2"Socket Weld319External
WPN40-A-R22-12-SW-IS1/2"Socket Weld319Internal
WPN40-A-R22-13-BW-ES3/4"Butt Weld319External
WPN40-A-R22-13-F150-IS3/4"150# FLG319Internal
WPN40-A-R22-13-F300-ES3/4"300# FLG319External
WPN40-A-R22-13-F300-IS3/4"300# FLG319Internal
WPN40-A-R22-13-SW-ES3/4"Socket Weld319External
WPN40-A-R22-14-BW-ES1"Butt Weld319External
WPN40-A-R22-14-F150-ES1"150# FLG319External
WPN40-A-R22-14-F150-IS1"150# FLG319Internal
WPN40-A-R22-14-N-IS1"NPT319Internal
WPN40-A-R22-16-F150-ES1 1/2"150# FLG319External
WPN40-A-R22-16-N-IS1 1/2"NPT319Internal
WPN40-A-R22-16-SW-ES1 1/2"Socket Weld319External
WPN40-A-R22-17-N-ES2"NPT319External
WPN40-A-R32-12-F150-IS1/2"150# FLG464Internal
WPN40-A-R32-12-N-ES1/2"NPT464External
WPN40-A-R32-12-N-IS1/2"NPT464Internal
WPN40-A-R32-13-BW-ES3/4"Butt Weld464External
WPN40-A-R32-13-F150-IS3/4"150# FLG464Internal
WPN40-A-R32-13-F300-ES3/4"300# FLG464External
WPN40-A-R32-13-N-ES3/4"NPT464External
WPN40-A-R32-13-SW-IS3/4"Socket Weld464Internal
WPN40-A-R32-14-BW-ES1"Butt Weld464External
WPN40-A-R32-14-F150-ES1"150# FLG464External
WPN40-A-R32-14-F300-ES1"300# FLG464External
WPN40-A-R32-14-SW-ES1"Socket Weld464External
WPN40-A-R32-16-SW-ES1 1/2"Socket Weld464External
WPN40-A-R32-17-BW-ES2"Butt Weld464External
WPN40-A-R32-17-F150-ES2"150# FLG464External
WPN40-A-R22-12-N-ES1/2"NPT319External
WPN40-A-R22-12-N-IS1/2"NPT319Internal
WPN40-A-R22-13-N-IS3/4"NPT319Internal
WPN40-A-R22-14-SW-ES1"Socket Weld319External
WPN40-A-R22-16-BW-ES1 1/2"Butt Weld319External
WPN40-A-R22-16-F300-ES1 1/2"300# FLG319External
WPN40-A-R22-16-F300-IS1 1/2"300# FLG319Internal
WPN40-A-R22-16-N-ES1 1/2"NPT319External
WPN40-A-R22-16-SW-IS1 1/2"Socket Weld319Internal
WPN40-A-R32-12-F300-ES1/2"300# FLG464External
WPN40-A-R32-12-F300-IS1/2"300# FLG464Internal
WPN40-A-R32-13-SW-ES3/4"Socket Weld464External
WPN40-A-R32-14-N-ES1"NPT464External
WPN40-A-R32-14-SW-IS1"Socket Weld464Internal
WPN40-A-R32-16-BW-ES1 1/2"Butt Weld464External
WPN40-A-R32-16-SW-IS1 1/2"Socket Weld464Internal
WPN40-A-R32-17-F300-ES2"300# FLG464External
WPN40-A-R32-17-N-ES2"NPT464External

DRIP, TRACING: WPN-63 series are available in sizes 1/2" - 1" and pressure up to 823 psig. Also the max diff. pressure up to 810 psi. They are extremely robust and reliable, making them a suitable choice for superheated steam, high pressure applications, as well as outdoor applications that are subject to freezing.

ModelSizeTypeMax PMO (psig)Max Capacity @ Max PMO (lb/h)Strainer Type
WPN63-C-R56-12-BW1/2"Butt Weld812Internal
WPN63-C-R56-13-BW3/4"Butt Weld812Internal
WPN63-C-R56-14-SW1"Socket Weld812Internal
WPN63-C-R56-12-F3001/2"300# FLG812Internal
WPN63-C-R56-12-SW1/2"Socket Weld812Internal
WPN63-C-R56-13-F3003/4"300# FLG812Internal
WPN63-C-R56-14-BW1"Butt Weld812Internal
WPN63-C-R56-14-F3001"300# FLG812Internal
WPN63-C-R56-13-SW3/4"Socket Weld812Internal

DRIP, TRACING: WPN-100 series are available in sizes 1/2" - 1" and pressure up to 1220 psig. Also the max diff. pressure up to 1200 psi. They are extremely robust and reliable, making them a suitable choice for superheated steam, high pressure applications, as well as outdoor applications that are subject to freezing.

ModelSizeTypeMax PMO (psig)Max Capacity @ Max PMO (lb/h)Strainer Type
WPN100-C-R90-13-F6003/4"600# FLG1305Internal
WPN100-C-R90-12-SW1/2"Socket Weld1305Internal
WPN100-C-R90-14-F6001"600# FLG1305Internal
WPN100-C-R90-14-SW1"Socket Weld1305Internal
WPN100-C-R90-12-F6001/2"600# FLG1305Internal
WPN100-C-R90-13-BW3/4"Butt Weld1305Internal
WPN100-C-R90-13-SW3/4"Socket Weld1305Internal
WPN100-C-R90-14-BW1"Butt Weld1305Internal
WPN100-C-R90-12-BW1/2"Butt Weld1305Internal

DRIP, TRACING: WPN-160 series are available in sizes 1/2" - 1" and pressure up to 1620 psig. Also the max diff. pressure up to 1600 psi. They are extremely robust and reliable, making them a suitable choice forsuperheated steam, high pressure applications, as well as outdoor applications that are subject to freezing.

ModelSizeTypeMax PMO (psig)Max Capacity @ Max PMO (lb/h)Strainer Type
WPN160-C-R130-13-BW3/4"Butt Weld1595Internal
WPN160-C-R130-14-SW1"Socket Weld1595Internal
WPN160-C-R130-12-BW1/2"Butt Weld1595Internal
WPN160-C-R130-12-F9001/2"900# FLG1595Internal
WPN160-C-R130-13-SW3/4"Socket Weld1595Internal
WPN160-C-R130-14-BW1"Butt Weld1595Internal
WPN160-C-R130-14-F9001"900# FLG1595Internal
WPN160-C-R130-12-SW1/2"Socket Weld1595Internal
WPN160-C-R130-13-F9003/4"900# FLG1595Internal

DRIP, TRACING: WPN-250 series are available in sizes 1/2" - 1" and pressure up to 2260 psig. Also the max diff. pressure up to 2230 psi. They are extremely robust and reliable, making them a suitable choice for superheated steam, high pressure applications, as well as outdoor applications that are subject to freezing.

ModelSizeTypeMax PMO (psig)Max Capacity @ Max PMO (lb/h)Strainer Type
WPN250-C-R150-13-SW3/4"Socket Weld2233Internal
WPN250-C-R150-14-BW1"Butt Weld2233Internal
WPN250-C-R150-12-BW1/2"Butt Weld2233Internal
WPN250-C-R150-13-F15003/4"1500# FLG2233Internal
WPN250-C-R150-12-F15001/2"1500# FLG2233Internal
WPN250-C-R150-12-SW1/2"Socket Weld2233Internal
WPN250-C-R150-13-BW3/4"Butt Weld2233Internal
WPN250-C-R150-14-SW1"Socket Weld2233Internal
WPN250-C-R150-14-F15001"1500# FLG2233Internal

DRIP, TRACER: The UB450 Bi-Metallic Steam Trap Module are used in steam tracing applications (fro process line heating, instrumentation and winterization, general steam jacketing ). In tracing applications, the externally - adjustable ( temperature adjustment) bi-metal element provides accurate control of condensate discharge temperature as required to maintain a specific product temperature as well provide maximum usage of energy.

ModelSizeTypeMax PMO (psig)Max Capacity @ Max PMO (lb/h)Strainer Type
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