Posted by admin | Posted in Agriculture | Posted on 22-05-2009
Tags: automotive, environment, home, oil, pressure
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Orifice Meters
Orifice meter tubes are differential pressure measurement devices and normally used in gas and dry steam service. Orifice meter tubes shall not be used in liquid service, abrasive gas service, or gas service with extensive surging in flow rates. Accuracy is +/-.25% of rate in a calibrated tube,and +/-0.60% of rate in not calibrate tube.
The minimum rating of orifice flanges shall be 300 ANSI. The minimum size of orifice plate flanges shall be 50mm nominal piping. Differential pressure taps shall be 1/2″ FNPT.
Orifice plates shall be square-edged concentric type (316 stainless steel). The beta ratio range shall be between 0.20 (minimum) and 0.67 (maximum). Weep and orifice vent holes shall not be utilized, unless specifically authorized otherwise.
All flow transmitters and pressure transmitters shall be direct connected without impulse lines, and static pressure shall be taken downstream of the orifice plate. Differential pressure (DP) shall be sized such that the normal design flow shall be 65% to 75% of the flow scale. The preferred flow scale is 0-25 kilo Pascal.
There will be cases where the preferred flow scale of 0-25 kilo Pascal cannot be achieved, then the following DP ranges shall apply:
- 0.344 barg =
- 2.1 barg =
- 4.8 barg =
Orifice fittings in applications where wide ranges of operating conditions are encountered, or frequent inspections of orifice plates are required shall have senior orifice fittings, to allow change out of orifice plates under pressure. Junior fittings may be used where flow rate turn down conditions are not as demanding such as fuel gas to turbines, and or blanket gas systems.
Senior or junior orifice fittings shall be supplied with upstream and downstream tubes.
Custody Transfer meter tubes shall meet the requirements. Meter tubes shall be provided with an upstream-approved flow conditioner, located 7.5 nominal diameters upstream of the orifice plate. Any piping taps upstream of the flow conditioner shall not be closer than 900mm. The downstream pressure and temperature taps shall not be closer than five nominal pipe diameters from the orifice plate.
Custody Transfer meter tubes shall come with upstream and downstream weld neck flanges to facilitate inspection of the internal diameter. The flow conditioner shall also be flanged. Meter tubes shall meet the piping requirements of the project piping specification, the painting requirements of DEP 30.48.00.31-Gen “Painting and Coating of New Equipment”, and fabrication requirements of DEP 31.38.01.31-Gen “Shop and Field Fabrication of Steel Piping”.
For non-custody transfer applications, the meter tube required nominal upstream length is 17.5 pipe diameters and 5 nominal pipe diameters downstream. The nominal turn down ratio of an orifice plate meter is 4.0 to 1.
How Oil Pressure Works
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Walters Model 247z steam pressure washer oil fired 230 volt pump $2,995.99 |
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Porsche Gauge 6 Volt 718 904 Spyder RS 356 Carrera 901 911 Temp Oil Oel Pressure $1,999.00 |
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Delphi HTP122 High Pressure Oil Pump $1,096.40 |
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HIGH PRESSURE OIL PUMP WITH IPR VALVE HPOP122X-IPR101 $799.95 |
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Newport Brass 880 Series Pressure Balance Tub and Diverter Shower Faucet $946.80 |
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FASS HD FUEL SYSTEM 220 GPH 05-07 POWERSTROKE 6.0 $915.80 |
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FASS HD FUEL SYSTEM 220 GPH 03-04 POWERSTROKE 6.0 $915.80 |
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FASS HD SERIES FUEL SYSTEM 220 GPH 99-03 POWERSTROKE $915.80 |
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Reelcraft E9350OMP 3/4 X 50 Oil Hose Reel (Medium Pressure) – NEW – FREE SHIP $915.00 |
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PUMP Hydraulic Pressure Drive Oil Cooling Fan 16920-50041 LEXUS SC400 $899.00 |
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FASS HD SERIES FUEL SYSTEM 200 GPH 99-03 POWERSTROKE $892.05 |
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FASS HD FUEL SYSTEM 200 GPH 03-04 POWERSTROKE 6.0 $892.05 |
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FASS HD FUEL SYSTEM 200 GPH 05-07 POWERSTROKE 6.0 $892.05 |
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U MONITOR WITH EGT PROBE, CHT PROBE, FUEL FLOW TRANSDUCER, OIL PRESSURE SENSOR $849.99 |
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HIGH PRESSURE OIL PUMP WITH IPR VALVE HPOP021X-IPR101 $699.95 |
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HIGH PRESSURE OIL PUMP WITH IPR VALVE HPOP021X-IPR101 $699.95 |
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Whitehaus Collection Blairhaus Adams Pressure Balance Tub and Shower Faucet $847.00 |
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Whitehaus Collection Blairhaus Mckinley Pressure Balance Tub and Shower Faucet $840.00 |
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HIGH PRESSURE OIL PUMP WITH IPR VALVE HPOP021X-IPR101 $679.95 |
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HIGH PRESSURE OIL PUMP HPOP122X FORD & INTERNATIONAL $675.00 |
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HIGH PRESSURE OIL PUMP WITH IPR VALVE NAVISTAR VT365 6.0 2004.1/2-2008 $675.00 |
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HIGH PRESSURE OIL PUMP WITH IPR VALVE FORD POWERSTROKE 6.0 2004.1/2-2008 $675.00 |
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HIGH PRESSURE OIL PUMP HPOP122X FORD POWERSTROKE 6.0 2004.1/2-2008 $675.00 |
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FASS TITANIUM FUEL SYSTEM 220 GPH 03-04 POWERSTROKE 6.0 $820.80 |
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FASS TITANIUM FUEL SYSTEM 220 GPH 05-07 POWERSTROKE 6.0 $820.80 |
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FASS TITANIUM FUEL SYSTEM 220 GPH 99-03 POWERSTROKE 7.3 $820.80 |
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Whitehaus Collection Blairhaus Truman Pressure Balance Tub and Shower Faucet $806.99 |
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Makita 2.5 HP 1.6 Gallon Oil-Free High Pressure Air Compressor AC310H NEW $799.99 |
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FASS TITANIUM FUEL SYSTEM 200 GPH 99-03 POWERSTROKE 7.3 $797.05 |
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FASS TITANIUM FUEL SYSTEM 200 GPH 03-04 POWERSTROKE 6.0 $797.05 |
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Whitehaus Collection Blairhaus Jacksons Pressure Balance Tub and Shower Faucet $794.50 |
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Adrenaline High Pressure Oil Pump HPOP 1996-2002 Ford 7.3L Power Stroke $789.00 |
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FASS FUEL SYSTEM HD SERIES 125 GPH 05-07 POWERSTROKE 6.0 $787.55 |
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FASS HD SERIES FUEL SYSTEM 125 GPH 03-04 POWERSTROKE 6.0 $787.55 |
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FASS HD SERIES FUEL SYSTEM 125 GPH 99-03 POWERSTROKE 7.3 $787.55 |
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AUTOMETER 7527 PHANTOM II ELECTRIC OIL PRESSURE GAUGE $780.35 |
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SIERRA 18-6274 Power Tilt Trim Motor Oil Dyne Low Pressure/High Flow New $774.00 |
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HIGH PRESSURE OIL PUMP WITH IPR VALVE FORD POWERSTROKE 6.0 2003-2004 EARLY $625.95 |
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HIGH PRESSURE OIL PUMP WITH IPR VALVE HPOP123X-IPR110 $625.95 |
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HIGH PRESSURE OIL PUMP WITH IPR VALVE HPOP123X-IPR101 $625.95 |
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HIGH PRESSURE OIL PUMP WITH IPR VALVE NAVISTAR VT365 6.0 2003-2004 EARLY $625.95 |
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HIGH PRESSURE OIL PUMP WITH IPR VALVE FORD POWERSTROKE 6.0 2003-2004 EARLY $625.95 |
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Aerospace Logic – OPT200K Oil Pressure/Temperature Kit $749.00 |
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NEW GENUINE FORD INTERNATIONAL High Pressure Oil Pump Kit 1882258C93 $764.96 |
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FASS TITANIUM FUEL SYSTEM 200 GPH 05-07 POWERSTROKE 6.0 $759.00 |
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HIGH PRESSURE OIL PUMP HPOP122X NAVISTAR VT365 6.0 2004.1/2-2008 $599.95 |
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Newport Brass 3-1042BP Colorado Pressure Balanced Tub and Shower Trim $749.25 |
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Whitehaus Collection Blairhaus Jacksons Pressure Balance Shower Faucet $745.50 |
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Reelcraft 83050OMP 3/4″ X 50′ Oil Hose Reel (Medium Pressure) – NEW – FREE SHIP $745.00 |
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HIGH PRESSURE OIL PUMP HPOP-021X NAVISTAR DT466E $579.95 |
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Stewart Warner Classic Tach Speedo Oil Fuel Water Boost Pressure $695.00 |
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KOMATSU Official 1/50 Oil Pressure Shovel PC2000-8(Backhoe) EXCAVATOR Japan LTD $600.00 |
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KOMATSU Official 1/50 Oil Pressure Shovel PC2000-8(Backhoe) EXCAVATOR Japan LTD $600.00 |
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114-380009-5 OIL TEMP.& OIL PRESSURE INDICATOR $699.00 |
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Newport Brass 880 Series Balanced Pressure Diverter Shower Faucet 884BP/15A $712.50 |
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FASS TITANIUM FUEL SYSTEM 125 GPH 99-03 POWERSTROKE 7.3 $692.55 |
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Blairhaus Washington Pressure Balance Tub and Shower Faucet Polish Chrome $689.99 |
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FASS HD SERIES FUEL SYSTEM 95 GPH 03-04 POWERSTROKE 6.0 $673.55 |
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FASS FUEL SYSTEM HD SERIES 95 GPH 05-07 POWERSTROKE 6.0 $673.55 |
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FASS HD SERIES FUEL SYSTEM 95 GPH 99-03 POWERSTROKE 7.3 $673.55 |