RMA Products Profile
Cutting-Edge Flow Measurement for Efficient Pipelines
RMA Control
Gas Over Oil
Together with our niwatec NWS Scotch Yoke or NWLA linear actuator, our gas over oil control guarantees a trouble free and safe procedure during normal operation as well as in extreme situations.
With this type of control, solenoid valves lead natural gas into oil tanks.The gas pressure generates a hydraulic pressure on the oil cushion, opening or closing the valve by the aid of the Scotch yoke mechanism. The modular design facilitates maintenance and the integration of security relevant components such as linebreak control systems, high-, low- or
Standard Features
- Operational pressure upto 100 bar
- For double acting actuators
- Electric explosion protection in accordance with Ex-e, Ex-d or Ex-ia
- CE and ATEX 94/9/EG certified
- Control voltage: 24 V DC, 48 V DC, 110 V DC, 220 VDC, 115 V AC, or 230 VAC
- Temperature range: -29 °C to +80 °C
- Control components mounted in stainless steel casing
- Tubing and fittings made of stainless steel, manufacturer of fittings according to customer‘s specification
- Position feedback open or closed
- Gas or oil reservoir certified according to PED, GOST or ASME VIII div. 1 (ARH or DPEM)
- Manual emergency operation by means of hydraulic hand pump
Optional Features
- Extended temperature range: -40 °C upto +60 °C
- Low or high pilots for pipeline protection
- Coils with low power consumption (appox. 3 W per valve)
- Linebreak system (electric or mechanic)
- Differential pressure switch (electric or mechanic)
- ESD or Partial Stroke function
- Pressure accumulator for emergency strokes (number of strokes according to customer‘s specification) corresponding to PED, GOST, or ASME VIII div. 1 (ARH or DPEM)
- Pressure switch for signalisation of minimum pressure needed
- SIL 2 / SIL 3
- Low regulating times (down to < 1 second) for single acting actuators
- Pressure reservoir for emergency strokes corresponding to PED 97/23/EG, GOST or ASME VII Div. 1 (approval according to country of destination). Number of emergency strokes according to customer‘s specification
- Pressure switch for signalisation of minimum pressure needed
- Local / remote switch (maintenance switch)
- Control cabinet heating incl. thermostat
- Cathodic separation
- Fire protection
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