Hydrogen-Service Butterfly Valves: NPS42 Class 900 Units Delivered to a Coal-Chemical Methanol Unit
A Chinese valve maker reports delivering a batch of NPS42 Class 900 butterfly valves in hydrogen service to the methanol-synthesis unit of a coal-chemical project.
Lead
Jiangsu Shentong Valve (江苏神通阀门股份有限公司) reports delivering a batch of NPS42-CL900 butterfly valves for high-temperature, high-pressure hydrogen service to the methanol-synthesis unit of a coal-chemical project.
NPS42 corresponds to a nominal diameter of DN1050 (about 42 inches), and CL900 to Class 900. The company's own announcement carries the delivery.
Facts
The delivery. The valves went to the methanol-synthesis unit of a project belonging to China Coal Group (中煤). The source describes the service as high temperature and high pressure with hydrogen present. (Source: Jiangsu Shentong Valve, 2026-01-24.)
The material point. The source states that the valves use metal materials controlled to ultra-low sulphur and phosphorus content.
The sealing point. The stated design points are an all-metal hard seating arrangement and a two-way high-pressure gas seal with no visible leakage.
The hydrogen point. The source states that hydrogen permeation was reduced by more than 95% against the conventional arrangement, which it presents as the measure against hydrogen embrittlement risk.
Testing. The source states that the valves met the design requirements on all indicators, and that they passed the performance tests in the presence of specialists from several parties. (Source: Jiangsu Shentong Valve, 2026-01-24.)
Where this connects on this site
- What a fugitive-emission test result asserts, and the fields a certificate carries — low-fugitive-emission testing is one of the stated points in this delivery: ISO 15848 Explained: Reading BH, CO3 and SSA0 on a Valve Certificate
- Why a duty at this temperature forces a metal seat, and what that costs in tightness: Soft-Seated vs Metal-Seated Valves: Where the Temperature Line Is
- The type at the centre of this delivery — envelope, applications and boundaries: Butterfly Valves
- The selector: industrialvalveselect.com
Sources
| # | Fact | Source |
|---|---|---|
| 1 | NPS42-CL900 hydrogen-service butterfly valves delivered to a 中煤 coal-chemical methanol-synthesis unit; ultra-low sulphur and phosphorus content; all-metal hard seating; two-way high-pressure gas seal with no visible leakage; low-fugitive-emission testing; hydrogen permeation reduced by more than 95%; tests witnessed by specialists from several parties | 江苏神通阀门股份有限公司 — https://www.stfm.cn/News_detail/393.html |
Note on sourcing. Item 1 originates as a company delivery announcement. We report only the verifiable layer — what was delivered, to what kind of unit, in what service, and with what stated design points. We do not repeat performance claims beyond those stated, and we do not rank or recommend suppliers.
What the source does not state
The announcement does not state the seat material, the leak-tightness class against the applicable standard, the number of valves in the batch, the end connection, or the hydrogen partial pressure of the duty.
Update note
Append-only. Corrections marked Correction with date.