Shanghai Dacheng Special Control Valve Co., Ltd. is an engineering-first control valve technology company. We own the knowledge — application analysis, sizing, trim design and quality standards — and deliver the right valve solution, not just a piece of iron.
Our in-house valve sizing software: enter medium, pressure, temperature and flow, and it returns the flow coefficient and a recommended bore. Import a whole valve datasheet and every tag is checked one by one, with a notes page listing caveats per valve at the end of the export. The installer is not posted online — an engineer sends it to you directly.
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The ZSPF / ZSNF series camflex-type eccentric rotary control valve — a proven technical equivalent route to Masoneilan 35002 series applications, engineered in Shanghai.
| Series | ZSPF (pneumatic) / ZSNF |
|---|---|
| Size range | DN25 – DN400 |
| Pressure rating | 6.4 MPa (Class 600 level), JB/T79-94 / ANSI B16.5 flanges |
| Capacity | Kv 12 – 3130, equal-percentage characteristic |
| Temperature | -40 ℃ ~ +250 ℃ (standard) / up to +450 ℃ (high-temp type) |
| Body materials | WCB / CF8M / ZG1Cr18Ni9Ti |
| Trim | Stellite hard-faced plug, leakage per GB/T 4213-2008 |
The eccentric cam plug lifts clear of the seat before rotating, delivering low operating torque, excellent shutoff and strong resistance to slurry and coking media — the typical pain points of chemical, fluorine-chemical and power services.
Dacheng is knowledge-driven by design: engineering sovereignty in our hands, manufacturing executed by audited, process-authorized partner factories under our technical dossiers.
Application databases, sizing methodology, trim design and inspection procedures belong to Dacheng. Every valve ships with our technical dossier and QC records.
Our benchmark is technical equivalence with leading international valve technology routes — evaluated by performance data, not by factory scale.
From service-condition review to sizing calculation and delivery, our engineers verify the solution before the order — serving large chemical plants and EPC projects.
Control valve solutions for elevated temperature and pressure duties are available on request as part of our engineering capability range.
Low-flow and micro-flow regulation solutions can be engineered for precise metering applications — inquire with your service data.
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Send us your service conditions — our engineers will reply with a sizing-verified proposal.
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