Current position > News detail
『Oil Flow Meter ANSI 150: Flange Standards Compliance for American Process Lines』Related information(clamp on meter|electromagnetic meter|venturi meterrotameter|orifice meter|ultrasonic flow meter|mass flow meter|coriolis mass flow meter|coriolis flow meter|magnetic flow meter|magmeter flow meter|magflow flow meter|mag meter flow meter|electromagnetic flow meter|vortex flow meter|turbine flow meter|thermal mass flow meter|thermal flow meter|rotameter flow meter)
Oil Flow Meter ANSI 150: Flange Standards Compliance for American Process Lines
Quick Answer: In American process lines, ANSI 150 raised face flanges are the default for oil flow meters operating below 196 psi at ambient temperature. Silver Instruments supplies oval gear meters and Coriolis mass flow meters with Class 150 flanges from DN15 to DN100. Send your oil type, viscosity in cP, pipe size, and flow range to our engineers, and you will get a dimensional drawing and price within the same week.
Why ANSI 150 Flanges Define Your Oil Meter Selection
Most oil batching, transfer, and blending skids built for North or South America follow ASME B16.5. The Class 150 rating, often called ANSI 150, covers a large share of these lines. Design pressure at 38 degrees Celsius sits around 196 psi. At 200 degrees Celsius that drops to roughly 160 psi. Many lubricant oils, diesel, and light crude streams operate well inside this envelope. A meter with ANSI 150 flanges bolts directly to existing pipework without adapter spools. No reducer, no extra gasket face, no leak point added. From a maintenance viewpoint, that matters. Technicians in a Texas refinery or a Brazilian fuel terminal keep the same flange torque procedure across the whole manifold. So the first filter when you specify an oil meter is flange class. Match it to the pipe spec or you create an expensive mismatch on site.
Oval Gear vs Coriolis for ANSI 150 Oil Lines
Silver Automation Instruments builds both positive displacement oval gear meters and Coriolis mass flow meters with Class 150 flanges. The right pick depends on what you measure and what data you need. Oval gear meters fit clean, non abrasive oils between 0.5 and 2000 cP. Think hydraulic oil, gear oil, diesel, palm oil, or mineral oil. Accuracy holds at plus minus 0.5 percent of rate across a 10:1 turndown. Model OGM-DN25 with ANSI 150 flanges handles flows from 2 to 20 L/min and weighs about 9 kg. For a lube oil filling machine in Monterrey, Mexico, we supplied ten OGM-DN25 units with PTFE seals and an aluminum housing. Total cost was well below an equivalent Coriolis setup and the customer only needed volume totalization.
Coriolis meters step in when the fluid condition changes a lot. Heavy fuel oil at 80 degrees Celsius, crude with trace water, or any oil where you want mass in kg per hour instead of volume. Our mini Coriolis meter, model SCF-025, carries ANSI 150 stainless steel flanges in DN15 and DN25. It reads mass flow, density, and temperature at the same time. A customer running bunker fuel blending in Durban, South Africa, chose the SCF-025 because density trending tells them when the inline mixer drifts. The learning is simple. If your process needs only volume and the oil is clean, stay with oval gear. If you need mass, density, or the fluid has entrained gas, go Coriolis.
Material and Seal Options That Match Your Crude or Fuel Oil
Flange compliance is just one part. The wetted materials and seals decide how long the meter lives. For ANSI 150 oval gear meters, Silver Instruments offers aluminum or cast iron housings. Aluminum works for light oils and lube applications up to 40 bar. Cast iron suits heavy oils and is common in diesel depots across West Africa. Shaft seals come in PTFE, Viton, or Kalrez. For a diesel terminal in Accra, Ghana, we supplied six cast iron OGM-DN50 meters with Viton seals after the customer saw swelling on the original NBR seals in less than four months. On Coriolis meters, the
Real Installations Where ANSI 150 Made the Difference
An oil blending plant in Vietnam asked us to replace turbine meters that drifted whenever viscosity spiked in winter months. The pipe spec was 2 inch Schedule 40 with ANSI 150 flanges. We proposed the OGM-DN50 oval gear meter. No pipe modification, same gasket type, same bolt circle. Commissioning happened in one shift. Another site, a hydraulic test stand near Manchester, UK, needed a compact Coriolis meter to measure oil consumption of hydraulic motors. The 1 inch line had ANSI 150 flanges. Our SCF-025 landed with the exact bolt pattern and a 4-20 mA HART output tied to their PLC. In both jobs, the flange standard was not a feature to brag about; it was the detail that made the meter fit without extra engineering. In practice, plant engineers rarely care about theoretical advantages. They care about whether the meter drops into the pipe gap and wires into the existing IO.
Getting a Meter Quote Without Guesswork
Here is the thing. Most delay in oil meter procurement comes from back and forth emails asking for missing parameters. You can avoid that by sending five data points right away. Tell us the fluid name and viscosity at pumping temperature. Give us the pipe diameter and flange class, here ANSI 150. State the minimum and maximum flow you expect, in L/min or kg/h. Include the operating temperature and pressure. Mention the output you need, pulse, 4-20 mA, or Modbus RTU. Also tell us the country where the meter will operate so we can confirm local certifications like ATEX or IECEx if needed. Our team at Silver Automation Instruments prepares a quotation with a data sheet, a dimensional drawing showing the ANSI 150 bolt circle, and a lead time estimate, typically within two working days.
FAQ
What does ANSI 150 mean on an oil flow meter flange?
ANSI 150 refers to a pressure class defined by ASME B16.5. At ambient temperature it allows a working pressure of about 196 psi. The flanges have a raised face and specific bolt hole pattern that matches American pipe schedules.
Can I get an oval gear oil meter with ANSI 150 flanges in small sizes?
Yes. Silver Instruments supplies oval gear meters from DN15 with aluminum housings and Class 150 flanges. Full data sheets with dimensions are available by request.
Do your ANSI 150 Coriolis meters measure both mass and density?
Yes. The SCF series delivers mass flow, density, and process temperature via the same 4-20 mA HART loop or digital output. This is useful for fuel blending and custody monitoring.
What seal material is best for diesel with ANSI 150 flange meters?
We recommend Viton or PTFE for diesel. NBR can swell over time especially when biodiesel content is above 5 percent. Specify the diesel grade when you ask for a quote.
How long does it take to receive an ANSI 150 oil flow meter in South America?
Standard models ship in six to ten days after order confirmation. Freight to Brazil or Colombia adds roughly five to seven working days. We use DHL or FedEx for units under 30 kg.