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Oil Flow Meter JIS Flange: Japanese Industrial Standards for Machinery Integration
Quick Answer: A JIS flange oil flow meter uses face dimensions, bolt circle patterns, and gasket types from Japanese Industrial Standards JIS B2220 and JIS B2238. This design allows direct mounting into hydraulic power units, lube oil skids, and fuel manifolds built to JIS piping codes. Silver Automation Instruments supplies oval gear, Coriolis, and turbine oil flow meters with JIS 10K, 20K, and 40K flanges in sizes from DN15 to DN100.
Why JIS Flange Compatibility Matters in Oil Measurement
Many OEM packaging machines, CNC lathes, and marine engine test benches in Asia center on JIS pipe threads and flanges. A food oil dosing system in Indonesia might use a JIS 10K flange on the pump discharge. If you mount a meter with an ANSI 150 lb flange, the bolt holes are off by 2 to 3 mm. This leads to gasket blowout, oil mist in the switch cabinet, and unplanned shutdowns. Most engineers skip the flange standard check until a leak appears. We have seen this on customer sites many times, especially in Vietnam and the Philippines where Japanese equipment is common in food and palm oil lines.
Using the correct JIS flange on an oil flow meter removes adaptor spools and extra gaskets. This shortens the installation distance and reduces possible leak points. It also keeps the meter body within the machine footprint. For mobile hydraulic test rigs that move between repair bays, a compact inline meter with JIS 20K flanges saves space and weight.
Oil Flow Meter Types with JIS Flanges
Oval Gear Flow Meters for Viscous Oils
Oval gear meters handle high viscosity oils without slipping. A DN25 oval gear meter with JIS 10K RF flanges can measure gear oil at 320 cP and 40°C. Silver Instruments supplies such meters with hard chromium-coated rotors and PTFE or PEEK bearings. Common flow ranges run from 0.6 to 500 L/h. Output can be a 4-20 mA HART signal or a local totalizer. In practice, the JIS flange face fits directly onto a pump skid filter block without a custom adaptor.
Coriolis Mass Flow Meters for Custody Transfer and Heavy Oil
Coriolis meters measure mass directly in kg/h. For heavy fuel oil blending in a power plant, a DN50 Coriolis with JIS 20K flanges handles 10,000 kg/h at 80°C and 15 bar. The flow meter reports density and temperature via a PT100 element. With JIS flanges, the meter bolts right onto a JIS-standard manifold, satisfying third party inspector requirements in Singapore and Malaysia.
Turbine Flow Meters for Low Viscosity Hydraulic Oil
Hydraulic test benches often use JIS flanges. A DN40 turbine meter with JIS 10K flanges checks pump volumetric efficiency on a press line. These meters respond fast to flow changes and provide a frequency output proportional to flow. Silver Instruments integrates a preamplifier and a 4-20 mA converter for direct PLC logging.
JIS Flange Ratings, Materials, and Oil Compatibility
Oil flow meter flanges come in JIS 10K, 20K, and 40K pressure classes. The K rating refers to the maximum working pressure in kg/cm² at ambient temperature (simplified rule). At 120°C, a JIS 10K carbon steel flange still holds 1.0 MPa safely. Here is a practical breakdown:
JIS 10K: up to 1.4 MPa at room temperature, suitable for lube oil and return lines.
JIS 20K: 2.8 MPa, common for hydraulic pump outlets and fuel transfer.
JIS 40K: 7.0 MPa, used in high pressure grease systems and injection lines.
Flange material options include S25C carbon steel for gen
Electrical Integration and Hazardous Area Options
Oil flow meters with JIS flanges often operate near solvent vapors or inside machine enclosures. Silver Instruments offers Ex d flameproof and Ex ia intrinsically safe versions that meet ATEX Zone 1 or Zone 2 requirements. The transmitter housing keeps the 4-20 mA HART terminals separated, and a local display shows flow rate and total. Because a JIS flange integration needs no adaptor, the meter remains fully mechanical and electrical certifiable without extra evaluation. This speeds up the FAT and site acceptance test for an EPC contractor in the Middle East working on a JIS-spec lubrication unit.
Silver Automation Instruments as Your JIS Oil Flow Meter Supplier
We keep a stock of common DN15 to DN50 oval gear meters with JIS 10K flanges for express delivery. Larger line sizes up to DN100 and special JIS 20K or 40K flanges take 2 to 3 weeks. Every meter includes a factory calibration certificate traceable to ISO 17025 and a material test report for the flange material. Last year, a customer in Vietnam asked for a JIS 10K oval gear meter for a CNC lube oil skid. The local distributor only had ANSI flanges. We air freighted a DN20 JIS 10K meter within 5 days and saved a production line stoppage.
To receive a quotation, send a brief data sheet with your oil type, flow range (L/h or kg/h), nominal pipe size (DN), JIS pressure rating, and operating temperature (°C). Our application engineers select the right meter and flange combination and return a fixed price within 1 business day. Visit the Silver Instruments site for product PDFs and 3D step files to check mechanical integration before ordering.
Frequently Asked Questions on Oil Flow Meter JIS Flange
Q: Which JIS flange standard applies to oil flow meters?
A: The main standards are JIS B2220 for steel pipe flanges and JIS B2238 for dimensions. Most meters use RF flanges per JIS B2220 with bolt patterns matching JIS 10K, 20K, or 40K.
Q: Can you provide oil flow meters with JIS 20K flanges for high pressure hydraulic systems?
A: Yes, Silver Instruments supplies oval gear and Coriolis meters with JIS 20K flanges from DN15 to DN50. These handle hydraulic oil at 2.8 MPa and up to 120°C.
Q: What is the difference between a JIS flange and an ANSI flange on an oil meter?
A: The bolt circle diameter and number of bolts differ. For DN40, JIS 10K has 4 bolts on a 105 mm PCD, while ANSI 150 lb has 4 bolts on a 98.4 mm PCD. The mismatch prevents safe assembly without an adaptor.
Q: What types of oil can JIS flanged flow meters measure?
A: They measure lubricating oil, hydraulic oil, gear oil, fuel oil, palm oil, and even heavy bunker fuel. Wetted material selection (carbon steel or stainless steel) depends on the oil chemistry.
Q: Do you offer explosion proof oil flow meters with JIS flanges?
A: Yes, we supply Ex d and Ex ia models for ATEX Zone 1 and Zone 2 areas. These meters retain JIS flange dimensions and use flameproof cable glands for safe operation in oil turbine enclosures and fuel storage halls.