Camflex-type pneumatic eccentric rotary control valve — the workhorse for slurry, coking and high-torque services where conventional globe valves fail early.
Eccentric rotary valve on the test bench — actuator stroking and flange inspection before delivery.
Data from the official product datasheet. Custom configurations available on request.
| Series / Type | ZSPF — pneumatic eccentric rotary plug control valve; ZSNF series (camflex / cam-deflection type) |
|---|---|
| Nominal size | DN25, DN32, DN40, DN50, DN65, DN80, DN100, DN125, DN150 … DN400 |
| Pressure rating | PN 6.4 MPa (Class 600 level) |
| Flange standard | JB/T79-94 / ANSI B16.5 |
| Flow capacity | Kv 12 – 3130 (depending on size and trim) |
| Flow characteristic | Equal percentage, high rangeability |
| Temperature range | -40 ℃ ~ +250 ℃ (standard); -40 ℃ ~ +450 ℃ (high-temperature type) |
| Body material | WCB / CF8M / ZG1Cr18Ni9Ti (other alloys on request) |
| Plug / trim | Eccentric cam plug, Stellite (司太立) hard-facing overlay |
| Seat leakage | Per GB/T 4213-2008 leakage classes |
| Actuator | Multi-spring diaphragm pneumatic actuator, positioner-ready |
The cam core moves away from the seat before rotation starts — no scraping during stroke, dramatically lower seat wear in abrasive and coking media.
Full-bore-like flow path delivers high Kv per size, often allowing one size down versus single-seated globe valves.
Eccentric cam action presses the plug onto the seat at the end of travel, achieving tight shutoff with low actuator demand.
Conventional camflex-type series typically jump straight from DN25 to DN40 and skip intermediate bores. manufactures DN32, DN65 and DN125 as standard, so your sizing lands exactly where the process needs it — no compromised oversizing.
Corrosive and polymerizing media, hydrogen chloride and chlorine-related services, reactor feed and recycle control.
Coal-chemical slurry lines, residue and catalyst-containing streams where globe trims plug or erode quickly.
Steam and condensate regulation, feedwater bypass, desuperheating water control.
Drop-in technical equivalent solutions for existing international-brand eccentric rotary installations — sizing verified case by case by our engineers.
Send medium, pressure, temperature and flow — we reply with a verified proposal.
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