Inverted Bucket Steam Trap

PN16/PN25/PN40
DN15~DN50mm
WCB, CF8, CF8M

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Inverted Bucket Steam Trap Descriptions

Inverted bucket steam trap is an automatic valve that allows condensate, air and other non-condensable gases to be discharged from the steam system while holding or trapping the steam in the system. Inverted bucket steam trap has effective separation of condensate from steam (the steam flows in from bottom of the trap through a U type channel), and no steam leak. Inverted bucket steam trap opens float withstands water hammer. Air vent on the bucket top can effectively prevent steam locking and air locking. (Non-condensable air at high temperature can be discharged as well) Flowspec Luokai manufactures the inverted bucket steam trap with threaded ends and flanged ends of ASME B16.5, JIS10K, EN1092-2, etc.

1. FEATURES

  • Simple structure with no gemel structure and fixed abrasive. 
  • Excellent ability of energy saving.
  • The waste will be constantly washed away.
  • Easy access to stainless steel internals simplifies maintenance.
  • Back pressure rate up to 90%.

3. STANDARDS

  • Design & manufacturing: GB/T13927-2008
  • Face to face: GB/T12250
  • Flanged ends: GB/T9113, ASME B16.5, JIS10K, EN1092-2
  • Threaded ends: BSP, NPT, ISO228
  • Inspection & testing: GB/T12251

2. TECHNICAL SPECIFICATIONS

  • PN16 / PN25 / PN40
  • Size: 1/2″~2″ (DN15~50mm)
  • Materials: cast iron GG25, ductile iron A536, cast steel WCB, stainless steel 304 CF8, stainless steel 316 CF8M
  • Applicable medium: steam
  • Applicable temperature: -29℃~+425℃

4. APPLICATIONS

  • Petroleum
  • Chemical industry
  • Pharmacy
  • Chemical fertilizer
  • Power plant
  • Textile
  • Printing & dyeing

Why Choose Flowspec Luokai

45+ Years Experience

Founded in 1978, manufacturing industrial valves for over four decades with proven reliability worldwide.

Global Certifications

ISO 9001, CE/PED, WRAS, FM, UL, API approved — compliant with international quality and safety standards.

OEM Custom Solutions

Flexible design and manufacturing per your specifications — material, size, pressure, actuation tailored to project needs.

Worldwide Delivery

Exported to 5 continents — North & South America, Europe, Middle East, Southeast Asia, and Africa.

Our Service Promise

Strict Quality Control

Every valve tested to API 598, EN 12266 before shipment

Timely Global Delivery

Reliable logistics to 5 continents with secure packaging

OEM & Custom Design

Tailored material, size, pressure and actuation to your specs

Dedicated After-Sales

Technical support and service throughout product lifecycle

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