C30Y
Self-Actuated Pilot-Operated Pressure Control Valve
Design Features
The C30Y is a self-actuated pressure control valve that regulates on line pressure alone. Rather than relying on an external power supply, it uses a pilot-operated architecture: a small pilot valve senses the downstream pressure signal, amplifies it, and uses that amplified force to drive the main plug. The result is a valve that responds quickly and holds a set point accurately, without a power drop, an air line, or a control loop behind it.
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| Product Name | Self-actuated pilot-operated pressure control valve |
| Product Model | C30Y |
| Nominal size | NPS 1/2"–10" (DN15–DN250) |
| Pressure class | Class 150–Class 300 (PN16–PN50) |
| Body material | Carbon steel (A), 304 stainless steel (S), 316 stainless steel (L) |
| Seat / seal material | PTFE, metal-to-metal (hard seat), hard alloy |
| Leakage class | ANSI Class IV |
| Media temperature | −42 °C to +350 °C (−44 °F to +662 °F) |
| Connection | Flanged |
| Trim type | Self-actuated (balanced plug) |
| Control accuracy | ±0.1% per the published table — see note below (page also states ±1%) |
| Actuation | Self-actuated, no external power or instrument air |
| Pressure setting ranges | 0.01–0.12 kPa; 0.08–0.25 kPa; 0.2–0.5 kPa; 0.45–1.0 kPa; 0.6–2.0 kPa |
| Remarks | Other special sealing materials or special temperature requirements can also be designed and selected according to customer specifications. |