Separator duty
Widely used in refineries, gasoline plants, industrial paints, and oil and gas separators.
Archimedes principle
Internal Ball Float Level Controller
The float works inside the vessel and the controller is mounted at the connection. This compact arrangement is suited to separators and process vessels where level control has to happen at the vessel itself.
- Float travel span
- 300 mm
- Plug angle turn
- 50°
- Operating pressure
- 40 kg/cm²
- Temperature
- 120 °C
Overview
Built for separators and process vessels
The float works inside the vessel and the controller is mounted at the connection. This compact arrangement is suited to separators and process vessels where level control has to happen at the vessel itself.
The position of the ball float is determined by fluid level variation, which actuates the rod through a system of levers. Any increase in level raises the float, helped by a counterweight in its upward movement. The mechanical link operates the plunger of the pneumatic relay, changing the output pressure which finally operates the control valve.
The pneumatic relay is made of brass and is weatherproof, which makes the instrument suitable for outdoor application and even in moist conditions.
Wide travel span
Maximum plug turn of 50°, approximately 300 mm in terms of level.
Outdoor rated
Brass pneumatic relay in a weatherproof housing, suitable for outdoor and moist conditions.
Runs on gas or air
The relay operates at 1.1 to 3.0 kg/cm² of purified, dry natural gas or air.
Specifications
Standard model
| Connection | 8" NB CS, ASTM A105 flange or 2" threaded as per Russian design |
|---|---|
| Mounting | Side, internal type |
| Enclosure | Die-cast aluminium, weatherproof to IP 65 |
| Service fluid | Crude oil / oil and gas interface |
| Specific gravity | Minimum 0.7 |
| Float material and size | SS 304 / SS 316, 197 mm / 248 mm ± 5 mm dia |
| Float travel span | 300 mm with plug angle turn of 50° |
| Inlet and outlet connection | 1/4" NPT |
| Operating pressure | 40 Bar / 40 kg/cm² |
| Temperature | 120 °C |
| Supply pressure | 1.1 kg/cm² to 3.0 kg/cm², clean dry air / gas |
| Output | On-off (proportional) |
| Action | Direct and reverse |
Not recommended in turbulent and foaming fluids. For those duties a displacer-based controller is the better choice.
Tell us what is inside the vessel
Share the vessel details, medium, specific gravity, pressure, temperature and required control action. We will confirm the float and controller arrangement.
- Fluid, specific gravity and concentration
- Flow or level range, and line size
- Operating pressure and temperature
- Material of construction and end connection
- Output, display and area classification