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Gasoline Flow Meter 50 m³/h and Batch Control Valve Integration
Quick Answer: A 50 m³/h gasoline flow meter integrated with a batch control valve gives you clean and precise fuel loading, blending, or custody transfer. Silver Automation Instruments supplies oval gear and turbine meters in this range, paired with pneumatic or electric shut-off valves that start and stop the batch automatically. Typical system accuracy holds ±0.5%, with pulse output into a batch controller for repeatable volumes.
Why 50 m³/h Fits Many Gasoline Applications
In fuel depots across Southeast Asia, Australia, and the Middle East, a 50 cubic meter per hour flow rate matches top-loading tank trucks and rail car filling. It is also a common pump capacity for mid-size terminals. For example, a fuel trader in Malaysia fills road tankers with 20,000 liters per compartment. At 50 m³/h, that compartment fills in about 24 minutes. The batch controller counts pulses from the flow meter and closes the valve precisely when the set volume is reached. This avoids overfill and product loss.
Oval Gear or Turbine Meter for Gasoline Batching
Gasoline has a low viscosity of around 0.6 cP at 20 °C. Both oval gear meters and turbine meters work well here. Silver Automation Instruments often recommends oval gear meters for batch control because they maintain high accuracy even at low flow rates and pulsating flow. The meter body comes in cast iron or stainless steel, with options for PT100 temperature compensation. For a 50 m³/h flow, we typically provide a DN50 or DN80 oval gear meter with 4-20 mA HART and pulse output. The turndown ratio is excellent. In practice, most engineers skip the turbine option when they need direct volume readout on a local display without straight pipe runs. We have seen this on customer sites many times.
If the installation is near a loading arm and space is tight, a turbine meter with built-in flow conditioner saves pipe runs. But the oval gear meter is far more forgiving of vibration. Both meter types can be certified to ATEX Zone 1 for gasoline vapors. Always request Ex ia IIC T6 Ga temperature class. Send us your ATEX zone requirements when you ask for a quote.
How the Batch Control Valve Integration Works
The batch control valve opens on a signal from the batch controller. The flow meter sends a high-frequency pulse output, typically 100 pulses per liter, to the controller. As the batch progresses, the controller compares the accumulated total with the preset batch size. Near the end of the batch, the controller can command a two-stage shutdown to slow the flow and then fully close the valve. A pneumatic ball valve with a solenoid pilot is a common choice for 50 m³/h lines. For electric actuation, we use a modulating valve with a 4-20 mA positioner.
Here is the thing. The integration is not only about cutting the flow. The Silver Instruments batch controller also logs the time, date, meter reading, and operator ID. You can connect it to a paperless recorder for audit trails. Customers in Africa and Latin America
Specifications You Should Prepare Before Asking for a Price
When you request a quotation, give us the pipe size, inlet pressure in bar, maximum and minimum flow rate, and gasoline temperature range. Specify if you need ATEX Zone 1 or Zone 2. State your preferred output signal, like 4-20 mA HART or Modbus RTU. Tell us the batch size you want, for instance 30,000 liters. Also mention if the valve must fail closed on loss of power or air. That helps us select the right spring-return actuator.
We see many inquiries with missing pressure details. A higher inlet pressure than expected can cause cavitation and damage the oval gear meter. Silver Automation Instruments will check the net positive suction head and recommend an anti-cavitation trim for the valve if needed. Send us your pressure (bar), temperature (°C), pipe size (DN), and flow range. We will propose the correct meter, valve, and controller combination.
Real Case: Fuel Loading Terminal in Kenya
Last year a customer in Mombasa needed a 50 m³/h gasoline loading skid for a new terminal. They requested ATEX Zone 1 certification, a DN80 oval gear flow meter, and a pneumatic shut-off valve with a 10 bar rating. Silver Automation Instruments supplied model SOG-080-EX with a BATCH-2000 controller. The batch precision after commissioning was ±0.3%. The skid also included a strainer and a pressure transmitter. The local technicians used our phone support to set the relay output for two-stage closure. Because the setup was simple, training took only one afternoon.
FAQ on Gasoline Batch Control Systems
What is the best flow meter for a 50 m³/h gasoline batch? An oval gear meter gives repeatable volumes with low pressure loss. A turbine meter is also suitable if you need a compact solution. Both achieve ±0.5% or better with pulse output.
Can I integrate the batch control valve without a PLC? Yes. A dedicated batch controller from Silver Instruments handles the startup, pacing, and shutdown logic. You set the batch volume on the front keypad. No programming is needed.
Do I need ATEX certification for the meter and valve? For gasoline, yes. The area around the loading arm is usually Zone 1. We provide Ex-rated meters, solenoid valves, and positioners. Always check your local hazardous area classification.
What is the typical valve actuation speed for two-stage shutdown? A pneumatic piston actuator closes the valve within 1 to 2 seconds after de-energizing. The batch controller can energize a small pilot solenoid to slow the flow first, then fully close the main valve.
How do I prevent water hammer when the valve closes fast? Use a soft-closure logic in the controller with a downstream surge relief valve. Silver Instruments can size the system to limit surge pressure to less than 1.5 times the working pressure.
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