Ultra-High-Pressure Valves: A Shanghai Maker Reports a PN3600 Unit and Two New Products
A Shanghai valve maker reports that an ultra-high-pressure valve of a pressure class given as PN3600 passed testing, alongside a Class 2500 floating ball valve and a Class 4500 Y-pattern globe valve.
Lead
Nafuxi (Shanghai) Valve Technology (纳福希（上海）阀门科技有限公司) reports that an ultra-high-pressure valve of a pressure class given as PN3600 passed testing in August 2026.
The same source reports two further products: a Class 2500 high-temperature, high-pressure, wear-resistant floating ball valve, and a Class 4500 Y-pattern high-pressure globe valve.
Facts
The PN3600 unit. The source gives the size as DN72 and states that the unit passed testing in August 2026. It describes the class as the highest pressure class globally, and states that this is the first domestic capability at that class in China. (Source: Shanghai Qingpu District People's Government (上海市青浦区人民政府), 2026-09-15.)
The two released products. A Class 2500 high-temperature, high-pressure, wear-resistant floating ball valve, and a Class 4500 Y-pattern high-pressure globe valve. The source states that both were developed in-house.
The company. Established in 2009 in Qingpu District, Shanghai, the source states that it works on valves for high-temperature, high-pressure, cryogenic and wear-resistant severe duties, and that it holds API, ISO and SIL functional-safety certifications.
The event. The products were presented at a launch and smart-factory opening in Zhujiajiao, Qingpu District, Shanghai, on 12 September 2026. (Source: Shanghai Qingpu District People's Government, 2026-09-15.)
Note on scope. The pressure classes and the product descriptions are reported as the source states them, including the "highest pressure class globally" description, which is the source's characterisation rather than ours. This item is not an endorsement of the company or its products.
Where this connects on this site
- Where a ball valve's construction changes with class — floating against trunnion: Ball vs Gate vs Globe Valves: The Three-Way Comparison
- The class and temperature lines above which the site stops recommending automatically: Valve Selection Guide: From Function to Class to Material
- The selector: industrialvalveselect.com
Sources
| # | Fact | Source |
|---|---|---|
| 1 | PN3600-class DN72 ultra-high-pressure valve passed testing August 2026; Class 2500 high-temperature, high-pressure, wear-resistant floating ball valve; Class 4500 Y-pattern high-pressure globe valve; company established 2009; API, ISO and SIL functional-safety certifications; launch and smart-factory event 12 September 2026 | 上海市青浦区人民政府 — https://www.shqp.gov.cn/shqp/qpyw/20260915/1395067.html |
Note on sourcing. Item 1 originates as a government-site report of a company launch event. The class figures and product descriptions are reported as the source states them. We do not rank or recommend suppliers.
What the source does not state
The report does not state the body, trim or seat materials of any of the three products; the applicable design or test standard; the medium or the temperature at which the PN3600 unit was tested; the seat construction of the two released products; or the flow coefficient of either.
Update note
Append-only. Corrections marked Correction with date.