Product category

Yoshitake Steam Traps / Inverted Bucket Steam Traps

TB series inverted bucket steam traps for reliable removal of condensate and air from steam equipment.

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Model comparison

Compare only the points that determine the choice: function or construction, applicable medium, operating range, body material, and connection or nominal size. Open the model page to confirm the full specification.

Model	Key selection point	Medium	Operating range	Body material	Connection / size
TB-20	Inverted Bucket Steam Trap	Steam condensate	2.0 MPa (TB-20) / 1.0 MPa (TB-20F) 220°C	Ductile cast iron	JIS Rc screwed connection, Max 2.0 MPa
TB-20F	Inverted Bucket Steam Trap \| Ductile Cast Iron	—	1.0 MPa 220°C	Ductile cast iron	JIS 10K FF flanged; JIS 10K FF flanged, 1.0 MPa max pressure
TB-5	Inverted Bucket Steam Trap, 1.0 MPa, Ductile Cast Iron	—	1.0 MPa 220°C	Ductile cast iron	JIS 10K FF flanged; -2.1: Max. Differential Press. 0.21 MPa, Orifice Size 3/8 (9.5mm); -5.6: Max. Differential Press. 0.56 MPa, Orifice Size 9/32 (7.1mm) / 1/8 (3.2mm); -8.7: Max. Differential Press. 0.87 MPa, Orifice Size 1/4 (6.4mm) / 7/64 (2.8mm); -10: Max. Differential Press. 1.0 MPa, Orifice Size 7/32 (5.6mm) / #38 (2.5mm)

Process scope

Yoshitake inverted-bucket steam traps use a mechanical bucket mechanism for condensate discharge. They are evaluated by condensate load at differential pressure, allowable back pressure, priming/start-up behavior, connection, and the service pressure-temperature envelope.

Project-specific checks

Calculate condensate load at start-up and running conditions at the actual differential pressure.
Confirm allowable back pressure, steam pressure, and maximum temperature.
Review priming, venting, freeze exposure, dirt protection, and discharge piping.
Match thread or flange connection, orientation, test access, and maintenance clearance.

Final verification

This guide groups local Yoshitake catalogue pages for preliminary engineering review. The model-specific Yoshitake documentation, sizing calculation, materials confirmation, and applicable site requirements control the final order and installation decision.