ZGV / ENGINEERING RECORDS
Original designs.
Questions worth asking.
Explore two original ZGV design disclosures. Read the mechanism, open the original record and prepare a precise engineering question.
CN203202284U · Published
Decoking plug valve: seat edges and thermal movement
Original title: 自动除焦旋塞阀
The disclosure describes curved seats with scraper-shaped edges and a spring-supported seat. Its design discussion addresses deposits on the plug and thermal movement between the plug and body.
What to look for in the drawing
The useful distinction is the location of the scraping edge and the provision for movement. A generic hard-seated plug valve description does not establish either detail for a specific offered valve.
Ask about the offered configuration
For a deposit-forming service, which seat-edge arrangement, thermal-clearance provisions and maintenance access are included in the offered drawing?
Read the original publication (PDF) · Publication record
Original PDF, page 1 (abstract), pages 3–4 (description), page 5 (drawing)
CN203202314U · Published
Float-clack check valve: the disc recess and installation
Original title: 浮瓣式止回阀
The disclosure describes a split body and a recess into which the disc moves when open. It discusses the seat-plane angle and installation in horizontal and vertical pipework.
What to look for in the drawing
The disc travel and its surrounding body space are important details to identify in a drawing. Installation suitability and closing behaviour still depend on the current valve configuration and system conditions.
Ask about the offered configuration
For the proposed installation direction and flow conditions, what disc travel, installation limits and closing characteristics are confirmed in the current drawing and documents?
Read the original publication (PDF) · Publication record
Original PDF, page 1 (abstract), page 3 (description), page 4 (drawing)
FROM SOURCE TO DISCUSSION
Prepare an engineering question
Choose a record and add the service conditions you want the team to review. This draft stays in your browser until you choose to copy or send it.
How this library grows
Each entry keeps its original publication number, source, date and location in the document. The editorial team reviews new material and source corrections before adding it, and keeps a revision record. Current product drawings and project documents remain part of the quotation review.
Revision 1.0.0 · 15 October 2026: two original design records checked and added, with a source-linked enquiry worksheet.
