Cryogenic Control Valves: A Wuxi Maker Wins a −130 °C, Class 2500 Package for a CNOOC Affiliate
A Wuxi valve maker has won an electric control-valve package for a CNOOC affiliate — valves specified at −130 °C and Class 2500 in NPS 8 — after simulation work and several rounds of the owner's technical review.
Lead
Parker (Wuxi) Valve Co. (帕克（无锡）阀门有限公司), a Wuxi-based specialist valve maker, has won the electric control-valve procurement of the equipment technology company of the Shenzhen regional centre of CNOOC Energy Development (海油发展深圳区域中心装备技术公司), the valve branch of the China General Machinery Industry Association reported on 8 October 2026.
Facts
The duty. The valves are specified at a design temperature of −130 °C, a pressure class of 2500 and a nominal size of NPS 8 — a combination the association's report describes as a compound extreme duty of deep cold and high pressure. (Source: the valve branch of the China General Machinery Industry Association, 2026-10-08.)
Why it is hard, as the report frames it. At −130 °C, metallic materials tend toward embrittlement and differential thermal contraction between components directly affects sealing; combined with Class 2500 pressure, the duty places high demands on material stability, cryogenic treatment and the sealing system. (Source: the same.)
The maker's record. The maker states that its type-test capability covers down to −196 °C, that its technical team worked through low-temperature brittleness, thermal cycling deformation and high-pressure sealing by simulation and calculation, and that the product passed the owner's multiple rounds of technical review. (Source: the same.)
The maker's focus. The company describes its focus as high-end fluid control for petrochemical and offshore oil and gas applications, with a chain running from material selection through cryogenic treatment to full type testing. (Source: the same.)
Where this connects on this site
- Where the seat's temperature limit sits against the body's — two separate gates: Soft-Seated vs Metal-Seated Valves: Where the Temperature Line Is
- What a cryogenic-valve specification should name now that the old British standard is gone: BS 6364: Withdrawn in 2015 — What a Cryogenic Valve Specification Should Name Instead
- The selector: industrialvalveselect.com
Sources
| # | Fact | Source |
|---|---|---|
| 1 | The award of the CNOOC Energy Development Shenzhen regional centre equipment technology company's electric control-valve procurement; design temperature −130 °C, Class 2500, NPS 8; the embrittlement / differential-contraction / sealing rationale; the maker's type-test capability to −196 °C; the simulation-based development and the owner's multiple rounds of technical review; the maker's petrochemical and offshore focus | 中国通用机械工业协会阀门分会（来源：帕克（无锡）阀门有限公司）, 2026-10-08 — https://vl.cgmia.org.cn/News/Detail/26459 |
Note on sourcing. This item reports an industry association's account of a manufacturer's contract win. We record the verifiable layer — the buyer, the duty conditions and the review process as stated. Performance-capability statements are reported as the maker's own, and we do not rank or recommend suppliers.
What the source does not state
The report does not state the number of valves in the package, the contract value, the delivery schedule, the specific offshore project or facility the valves serve, or measured test results beyond the stated type-test capability range.
Update note
This item is a dated record of a publicly reported contract award. We append corrections rather than rewrite history; corrections are marked Correction with the date.