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『Oil Flow Meter ANSI 150: Flange Standards Compliance for American Process Lines』Related information(flow rotameter|digital flow meter|balo meter|hydraulic flow meter|volumetric meter|positive displacement meter|pitot tube flow meter|displacement meter|cfm meter|variable area flow meter|inline flow meter|differential pressure flow meter|calibrated flow meter|velocity meter|paddle wheel flow meter|oval gear flow meter|anemometer hvac|multiphase flow meter|doppler flow meter|thorpe tube flowmeter|heat flow meter)
Oil Flow Meter ANSI 150: Flange Standards Compliance for American Process Lines
Oil Flow Meter ANSI 150: Flange Standards Compliance for American Process Lines
Quick Answer: Oil flow meters with ANSI 150 flanges follow the ASME B16.5 Class 150 bolt pattern and pressure/temperature ratings. At ambient temperature the working pressure is 19.6 bar (285 psi) for carbon steel flanges, dropping as the fluid temperature rises. Silver Automation Instruments supplies oval gear, turbine, and Coriolis mass flow meters with ANSI 150 raised face flanges from DN15 up to DN150, built for diesel, crude oil, lube oil, and edible oil lines across North American, Latin American, and Southeast Asian process plants that follow US piping standards.
When ANSI 150 Flanges Matter in Oil Metering Applications
Many process lines in the Americas were designed per ASME B16.5. If your oil unloading skid, refinery transfer line, or fuel blending system uses 150 lb flanges, the flow meter must match. ANSI 150 is not just a bolt circle dimension. It defines the pressure envelope for a given material group and temperature. A carbon steel ANSI 150 flange can handle 19.6 bar at 38°C, but at 200°C the rating drops to about 13.8 bar. In practice, we have seen a biodiesel plant in Ecuador reject a meter that had ISO PN16 flanges because the pipe fitters could not mate it to their existing ANSI 150 piping. That job switched to an oval gear flow meter from Silver Instruments with a certified A105 carbon steel ANSI 150 flange, and the skid was commissioned the same week.
Silver Instruments Oil Flow Meter Models with ANSI 150 Flanges
Our oval gear flow meter is the most common choice for oil with viscosities from 1 cP to over 1000 cP. We build it with ANSI 150 flanged connections in sizes DN15, DN20, DN25, DN40, DN50, DN80, and DN100. The meter body is cast iron or 316L stainless steel, and the gears are hardened steel or PPS for food grade oils. Standard output is a pulse signal or 4-20 mA HART. A PT100 temperature sensor can be integrated for mass flow calculation. For light oil and low viscosity hydrocarbons below 5 cP, we recommend a turbine flow meter with ANSI 150 flanges, sized from DN25 to DN150. The turbine meter works well for truck loading racks and aviation fuel lines where fast response and bidirectional measurement are not needed. For custody transfer or high accuracy mass measurement directly in kg/h, we supply Coriolis mass flow meters with ANSI 150 flanges in DN15, DN25, DN40, and DN50. These meters are ATEX Zone 1 certified for hazardous areas and provide density and temperature data via Modbus RTU.
Real Projects W
A lubricant blender in Malaysia needed to replace a faulty meter on a filling line for 15W-40 engine oil. The existing pipe was 2 inch Schedule 40 with ANSI 150 raised face flanges. They ordered a Silver Instruments oval gear meter model SIOG-50-CI-ANSI150, and the maintenance team installed it in two hours. No adapter spools, no gasket mismatch. Another case: a crude oil terminal in Nigeria asked us to propose a flow meter for a 6 inch ANSI 150 pipeline operating at 12 bar and 65°C. We suggested a turbine flow meter with a wafer body and ANSI 150 companion flanges. Because the temperature was low, the Class 150 rating was adequate and saved them the cost of moving to Class 300 flanges. Most engineers skip this part, but the gasket type also matters. For oil service we always recommend spiral wound gaskets with a PTFE filler, especially when the meter will be exposed to temperature cycles.
FAQ: Oil Flow Meter ANSI 150 Flange Selection
What is the maximum pressure for an ANSI 150 flanged oil flow meter at high temperature?
For a carbon steel flange the pressure limit at 200°C is about 13.8 bar. For stainless steel it is slightly lower, around 12.7 bar at the same temperature. Always check the ASME B16.5 table for your material group and fluid temperature.
Can I get an oval gear meter with ANSI 150 flanges for edible oil?
Yes. We can supply the meter with 316L stainless steel housing, PPS gears, and PTFE O-rings. The ANSI 150 flange is machined from the same 316L material. This combination meets 3-A and FDA requirements for food contact.
Do you offer ANSI 150 flanges in sizes smaller than 1 inch?
We can manufacture oval gear meters with ANSI 150 flanges starting at DN15 (1/2 inch). Smaller than that we usually recommend NPT threaded connections because compact meter bodies do not have enough room for a full ANSI 150 bolt circle.
What signal output do I get with these meters?
Standard options include a pulse output for remote totalizing, 4-20 mA HART for connecting to a PLC or flow computer, and optionally Modbus RTU for density and temperature data from Coriolis meters.
How do I request a quote for an oil flow meter with ANSI 150 flanges?
Send us your oil type, viscosity in cP (if known), maximum flow rate in L/min or kg/h, operating pressure in bar, temperature in °C, and the required pipe size (DN). Also mention if you need ATEX, IECEx, or Class I Division 2 certification. We will reply with a datasheet, price, and lead time for the exact model with ANSI 150 flanges.