Two-Port Single Seat
The TLV PN-COSR-16 is a pneumatic control valve designed for remotely controlling steam pressure. Based on the proven structure of the COSR pressure reducing valve, it is highly suitable for steam heating processes. The rapid response pneumatic actuator precisely adjusts the valve position to ensure accurate pressure and temperature control.
Features
- The rapid response pneumatic actuator precisely adjusts the valve position to ensure accurate pressure control.
- Large surface area integral screen for pilot valve extends trouble-free service.
- Combining with a controller and an electropneumatic transducer enables automatic PID operation.
- When combined with an air regulator it can be used as a pressure reducing valve to set secondary pressure remotely, and 2 point pressure switching is possible.
- By adjusting the internal spring load, steam can continue to be supplied at the required lowest set pressure even with motive air cut off (emergency case).
Control Note
Can be used to control process temperature if desired temperature is controllable using secondary pressure within the adjustable pressure range.
Specifications
| Specification | Cast Iron (FC250) | Ductile Cast Iron (GGG40.3) | Cast Stainless Steel (CF8/CF8M) |
|---|---|---|---|
| Connection | Flanged (ASME/DIN) | Flanged (ASME/DIN) | Flanged (ASME/DIN) |
| Size | DN 15, 20, 25, 40, 50 | DN 15, 20, 25, 40, 50 | DN 15, 20, 25, 40, 50 |
| Max. Operating Pressure (PMO) | 13 barg | 16 barg | 16 barg |
| Max. Operating Temperature (TMO) | 200 °C | 220 °C | 220 °C |
| Primary Pressure Range | 2 - 13 barg | 2 - 16 barg | 2 - 16 barg |
| Adjustable Pressure Range | 10 – 84% of primary pressure | 10 – 84% of primary pressure | 10 – 84% of primary pressure |
| Minimum Adjustable Flow Rate | 5% of rated flow rate | 5% of rated flow rate | 5% of rated flow rate |
| Motive Medium | Oil-free air (filtered to 5 μm) | Oil-free air (filtered to 5 μm) | Oil-free air (filtered to 5 μm) |
| Required Motive Air | [Secondary pressure + 1] barg | [Secondary pressure + 1] barg | [Secondary pressure + 1] barg |
Pressure Limits
Maximum pressure for adjustable pressure range is [Motive air pressure - 1] barg. Differential pressure must be between 0.7 – 8.5 bar.
Cv & Kvs Values
| Nominal Valve Size (DN) | 15 | 20 | 25 | 40 | 50 |
|---|---|---|---|---|---|
| Kvs (DIN) | 3.3 | 5.9 | 9.5 | 20.6 | 31.9 |
| Cv (UK) | 3.2 | 5.7 | 9.2 | 20.0 | 31.0 |
| Cv (US) | 3.8 | 6.9 | 11.1 | 24.0 | 37.2 |
Configuration
Dimensions
PN-COSR-16 Flanged DN 15 - 25
PN-COSR-16 Flanged DN 40, 50
Usage Examples
Automatic PID Control System (Temperature Control)
2 Point Pressure Switching
Installation Recommendations
In order to ensure stable steam flow, the piping upstream and downstream of the PN-COSR-16 must be straight runs. Maintain a straight piping run of 10 d or more upstream, and 15 d or more downstream.
