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Spiraflo flowmeters Section 3.0 Flowmetering Spiraflo flowmeters 3.1 Gilflo flowmeters 3.2 Vortex flowmeters 3.3 Orifice plate flowmeters 3.4 Computers, displays and transmitters 3.5 3.1 3.0 Flowmetering TI-P330-02 MI Issue 1 Spring Loaded Variable Area Steam Meter Description 3.1 EL 2600 Pressure Transmitter The SPIRAX SARCO Steam Meter consists of four basic parts. 1. M111 Transducer. This is installed in the steam line at the point where the steam flow is to be measured. (See TIS 8.002). It is supplied complete with a 2m length of 8 core heat resistant cable for connection to the M322 Conditioning Unit. 2. EL2600 Pressure Transmitter. This provides a 4-20 mA analogue signal to the M322 Conditioning Unit proportional to line pressure for superheated steam applications (see TIS 8.023). 3. M322 Conditioning Unit. The function of this unit is to accept flow rate and temperature signals from the M111 Transducer and pressure signals from the EL2600 Pressure Transmitter and convert them to digital form for transmission to the M210G Computer. 4. M210G Flow Computer. This accepts signals from the M322 Conditioning Unit, processes and displays them. The keypad enables the user to select the parameters to be viewed as well as allowing access to the numerous facilities available. (See TIS 8.021). M111 Transducer M 322 Conditioning Unit Note: Wiring between Computer EL2600 Pressure Transmitter and Conditioning Unit to be provided by user/installer. The SPIRAX SARCO Steam Meter is designed for use on dry saturated and superheated steam only. Flow rates are based on a max. flow velocity of 35m/s. Correct installation is important if accurate and reliable flow metering is to be achieved. Full Installation Instructions are supplied with each unit. Basic essentials of good installation are shown overleaf. Commissioning and Operating Instructions are also available for each unit. This cable (2m long) provided by Spirax Sarco 300m max (customer supply) Performance Accuracy: Repeatability: Turndown: ± 2% of measured flow (± 1% of FSD at 50% flow) ± 0.2% Maximum intermittent turndown 40:1 Average continuous turndown 25:1* M 201G Series Computer * For continuous operation, a velocity of 35m/s should not be exceeded to prevent the risk of pipeline erosion. Electrical wiring All electrical wiring must be carried out to the appropriate standards. Mains Supply Outputs Alarms etc. 3.1.1 Spiraflo flowmeters Installation points to watch 1. Ensure all pipework is adequately supported and properly aligned. This will prevent waterlogging during shutdown periods and possible problems on start up. 2. Size the Transducer on capacity rather than line size. Where a pipe size reduction is necessary, use eccentric reducing sockets. 3. The minimum recommended lengths of straight pipe are 6D upstream and 3D downstream. 4. Take care to observe the correct direction of flow as denoted by the arrow on the Transducer body. 5. It is advisable to fit a Check Valve downstream of the Transducer to avoid possible damage by reverse flow. At least 3 pipe diameters should remain between the Transducer and the Check Valve. 6. Do not install the Transducer downstream of a Pressure Reducing Valve as this may cause inaccuracies and/or possible Transducer damage. 7. Similarly, do not install the Transducer downstream of a partially open Stop Valve. 8. Avoid installing the Transducer downstream of an actuated valve which could cause rapid flow variations which, in turn, could cause Transducer damage. 9. A Separator should always be fitted upstream of the Transducer to remove entrained moisture from the steam. Dry steam is required for accurate metering. The Separator should be drained using a Float Trap set. 10. A full line size Strainer with 100 mesh stainless steel screen may be fitted to prevent dirt and scale reaching the Transducer. This is especially advisable on old or dirty systems where dirt or corrosion is present. 11. Ensure gasket faces do not protrude into the pipeline. 12. Insulation of the Transducer is not recommended, especially the domed cover. 13. A Bellows Sealed Stop Valve may be fitted upstream of the Transducer. 14. It should be remembered that good drainage is always necessary even with superheated steam systems where significant condensate loads may be present on start up. 1 1 9 1 5 4 12 13 10 2 11 6D 3 6, 7 & 8 2 2 3.1 3D 3 9 M 211G/212G Computer Electrical wiring ö 24 Volt Supply ý Power 24V, .2A, 5W. ø ö ÷ ý RS 232C ÷ ø All electrical wiring must be carried out to the appropriate standards. M322 Conditioning Unit PL2 Brown Violet ö ý 4 ¾ 20 mA ø M 111 Transducer White Blue Black PL1 Yellow Superheat only Green Superheat only Red PL3 ö ÷ HI/LO Alarm ý ÷ Pulsed output ø ö ÷ ý Mains Input ÷ ø TI-P330-02 MI Issue 1 EL26000 Pressure Transmitter (Superheat use only) How to specify Steam metering system for measuring mass flow of saturated or superheated steam comprising a Spring Loaded Variable Area Transducer, Pressure Transmitter (superheated applications only) local signal Conditioning Unit and Flow Computer. The system shall have density and dryness fraction compensation and be capable of display in energy units. System outputs should be 4-20mA (rate of flow), pulsed output (totalised flow) and RS232C interface. 3.1.2 Flowmetering TI-P330-03 MI Issue 6 Cert. No. LRQ 0963008 M111 and M115 Transducers for Steam Meters ISO 9001 Description The transducer is the pipeline unit part of the Spirax Sarco steam meter. It is intended for use on dry saturated and superheated steam only. 2 m heat resistant 8 core cable to conditioning unit (supplied by Spirax Sarco). The transducer is available with the following options:M111 SG iron body M115 Steel body 3.1 Cable Each transducer comes complete with 2 m of heat reistant 8 core cable, for connection to the conditioning unit. Associated equipment M210G Computer M322 Conditioning unit M1100 Smart transducer See other Technical Information sheets (TI's) for the general description of Spirax Sarco steam meters and for details of the M1100 steam metering system. Materials Sizes and pipe connections DN40, 50, 80 and 100 Flanged BS 4504 PN25, BS 10 Table H, JIS 10, JIS 20, ANSI B16.5 Class 150 and 300 Part Limiting conditions Internals Gaskets Maximum body design conditions PN25 Minimum operating pressure 1 bar g PMO - Maximum operating pressure 17 bar g Minimum operating temperature 120°C TMO - Maximum operating temperature 230°C Designed for a maximum cold hydraulic test pressure of 37.5 bar Note: The differential pressure drop across the unit is typically 0.2 bar g at average flowrates. Less than 0.5 bar g at maximum flow. Dimensions /weights Size DN40 DN50 DN80 DN100 PN25 A 176 180 240 260 Material SG iron DIN 1693 GGG 40.3 Steel DIN 17245 GS C25 Stainless steel Exfoliated graphite (EFG) Flow range on saturated steam Size DN40 DN 50 DN 80 DN 100 Minimum flow 1 bar g 15 kg /h 25 kg /h 60 kg /h 95 kg /h ANSI 150 A 175 178 240 260 ANSI 300 A 181 184 249 276 JIS 20 A 176 176 236 260 C 180 180 220 220 D 100 100 152 152 E 76 76 76 76 F C (see chart overleaf) Maximum flow (at 35 m/s velocity) 17 bar g 1 440 kg /h 2 250 kg /h 5 755 kg /h 9 000 kg /h (approximate) in mm and kg BS 10 H A 175 178 236 263 E 3.1.3 M111 M115 Body D A F 28 28 76 76 Weight 9.5 10.5 25.0 34.5 Spiraflo flowmeters Flow capacities for saturated steam Size and flowrate kg /h DN40 a) Maximum b) At 35 m /s velocity c) Minimum DN50 a) Maximum b) At 35 m /s velocity c) Minimum DN80 a) Maximum b) At 35 m /s velocity c) Minimum DN100 a) Maximum b) At 35 m /s velocity c) Minimum 5 6 7 Steam pressure bar g 8 9 10 11 1 2 3 4 610 180 15 740 260 18 845 350 21 940 420 23 12 13 14 15 16 17 955 280 25 1155 1320 1470 1600 1720 1830 1940 2035 2130 2225 2310 2395 2475 2555 2630 2705 410 540 660 790 910 1030 1150 1275 1400 1520 1640 1760 1870 1990 2100 2250 28 33 37 40 43 46 48 51 53 56 58 60 62 64 66 68 1020 1100 1175 1240 1300 1365 1425 1480 1530 1585 1635 1685 1730 500 580 660 740 820 900 970 1050 1120 1200 1275 1350 1440 25 27 29 31 33 34 36 37 38 40 41 42 43 2445 2955 3380 3755 4095 4400 4690 4960 5215 5460 5690 5915 6130 6335 6540 6730 6920 720 1050 1375 1695 2010 2330 2640 2945 3265 3580 3885 4195 4490 4800 5105 5415 5755 60 74 84 94 102 110 117 124 130 136 142 148 153 158 163 168 172 3820 4615 5285 5870 6395 6880 7330 7750 8150 8530 8895 9240 9575 9900 10215 10515 10815 1125 1640 2145 2645 3140 3640 4125 4600 5100 5590 6070 6555 7020 7495 7980 8460 9000 95 115 132 147 160 172 183 194 204 213 222 231 239 247 255 263 270 Notes on the above Table:The steam meter will continue to give a reading up to the maximum value in the above Table. However, the steam flow velocities at these maximum flowrates could be extremely high (up to 120 m /s at the low pressures and up to 42 m /s at the high pressures) and could lead to serious erosion damage both to the transducer and to the associated pipework and fittings. It is not recommended that a steam meter is selected to operate at flowrates continuously resulting from a velocity above 35 m /s. Turndown of the transducer is defined as the maximum flow divided by the minimum flow: Using the maximum figures from the above Table, the turndown is 40:1 throughout the size and pressure range. However, based on the recommended maximum velocity of 35 m /s, the turndown available will vary from 12:1 at 1 bar g up to 33:1 at 17 bar g. The average continuous turndown of the flowmeter is, therefore 25:1 Flow capacities for superheated steam In general terms, the flow capacity for the transducer is calculated using the following equation: Q = A x V x 3 600 SV Where:- Q A V SV = = = = Capacity in kg /h Pipe cross sectional area in sq.m. Flow velocity in m /s Specific Volume in m³ /kg The saturated steam flow capacities in the above Table are calculated using this equation. Superheated steam flow capacities can be calculated in the same way. Example What is the capacity of a DN80 transducer on superheated steam at 5 bar g and 200°C. Assume maximum velocity = 35 m /s Q = SV = 0.352 0 m³ /kg 3.14 x 0.08 x 0.08 x 35 x 3600 4 x 0.3520 = 1802 kg /h Installation Separate Installation and Maintenance Instructions are supplied with each transducer. In order to get the best performance from the transducer, it is essential that installation is correctly carried out in accordance with the guidelines given in the booklet supplied with each steam metering system. General guidelines are given in other TI sheets. Maintenance The Spirax Sarco transducer is a sealed and calibrated unit with no user serviceable parts. How to order Example: 1 off DN40 M111 Spirax Sarco steam meter transducer having an SG iron body flanged to BS 4504 PN25. Steam pressure 8 bar g saturated, maximum flowrate 700 kg /h pipeline size DN50. TI-P330-03 MI Issue 6 3.1.4 3.1 Flowmetering TI-P337-05 MI Issue 5 ISO 9001 Gilflo ILVA Flowmeter Description The Gilflo ILVA flowmeter operates on the spring loaded variable area principle and produces a differential pressure related to the rate of flow. It can be used with most industrial fluids, gases and both saturated and superheated steam. Sizes and pipe connections The Gilflo ILVA flowmeter should be installed in pipework manufactured to BS 1600 or ANSI /ASME B36.10 Schedule 40. For different pipe standards /schedules, if the flowmeter is being operated at the extreme of its published maximum range, downstream spool pieces manufactured from BS 1600 or ANSI /ASME B36.10 Schedule 40 should be used. If this is not possible, please contact Spirax Sarco Ltd. Limiting conditions The maximum pressure and temperature limitations are shown below. Minimum operating pressure 0.6 bar g. Maximum viscosity 30 centipoise. Operating range Temperature °C 3.2 DN50, 80, 100, 150 and 200 Suitable for fitting between the following flanges BS 4504 PN16, 25, 40. BS 10 Table H. ANSI B 16.5 class 150, 300, 600. Japanese Industrial Standard JIS 20. Korean Standard KS 20. 450 400 300 200 Steam saturation curve 100 0 -50 0 20 40 60 102 80 Pressure bar g The product must not be used in this region. Materials of construction Body Internals Spring Stainless steel S.316 431 S29 /S303 /S304 /S316 Inconel X750 or equivalent Performance The Gilflo ILVA is designed to be used in conjunction with linearising electronics such as the M240G flow computer (steam), M250G flow computer (gases) or M700 display unit. Alternatively the output signal linearisation can be performed on an EMS / BEMS or equivalent. Accuracy when used with M240G, M250G, M640 or M700: +/- 1% of measured value from 5% to 100% of maximum rated flow. +/- 0.1% FSD from 1% to 5% of maximum rated flow. Repeatability better than 0.25 % Turndown: up to 100:1 Pressure drop The pressure drop across the Gilflo ILVA pipeline unit is nominally 500 m bar (200 ins water gauge) at maximum rated flow. Flow capacity To determine the capacity of the Gilflo ILVA for different fluids, it is necessary to calculate the equivalent water flowrate QE (in l /min) as described under the section 'sizing the Gilflo ILVA' then selecting the appropriate size of flowmeter from the table. 3.2.1 How to order DN150 Spirax Sarco Gilflo ILVA flowmeter for installation between flanges to BS 4504 PN40. Body material 316 stainless steel. Flow medium saturated steam at 10 bar g, maximum flow 8,000 kg /h. For a general description of the Gilflo ILVA flowmetering system, see TI-P337-06 which also gives details of associated equipment. Gilflo flowmeters Dimensions /weights Size A DN50 35 DN80 45 DN100 60 DN150 75 DN200 85 Sizing the Gilflo ILVA flowmeter (approximate) in mm and kg B C D E 63 140 103 17.5 78 150 138 22.5 3.9 In order to determine the flow capacity of a Gilflo ILVA pipeline unit, it is necessary to calculate the Equivalent Water Flowrate (QE) based on the anticipated actual flow. Figure 2 is then used to select the appropriate unit. 103 205 162 37.5 8.3 1. Determine Equivalent Water Flowrate (QE) in l /min:- 134 300 218 37.5 14.2 161 360 273 42.5 23.6 Weight 2.0 Mass flow units Note:- Pressure tappings are threaded ¼" NPT QE = Gases, Steam (Flowing conditions) QE = M Gases (standard conditions) M QE = DS PF TS x x 1000 PS TF E Note: Pressure tappings (2 off located at 180°) ➤ D A B C Installation A separate installation booklet is supplied with each Gilflo ILVA flowmeter. The following main points are given here for guidance: 1. The Gilflo ILVA should be mounted with a minimum of 6 straight pipe diameters upstream and 3 downstream. No valves, fittings or cross sectional changes are permitted within these pipe lengths. Where an increase in nominal pipe diameter is required upstream of the meter, the length of straight pipe should be increased to 12 diameters. Similarly, where a Gilflo ILVA is installed downstream of two 90 degree bends in two planes, a pressure reducing valve or a partially open valve, 12 upstream pipe diameters should be allowed. 2. It is important that the internal upstream and downstream diameters of pipe are smooth. Ideally seamless pipes should be used and there should be no intrusive weld beads on the internal diameter. It is recommended that slip-on flanges be used to avoid any intrusive weld beads on the internal diameter of the pipe. 3. Care should be taken to install the Gilflo ILVA concentrically in the line. If this is not done, flow measurement errors may occur. 4. The Gilflo ILVA should be mounted horizontally. For vertical installations, consult Spirax Sarco. 5. For steam applications, good basic steam engineering practices should be followed: • Correct line drainage through adequate trapping. • Good alignment and support of associated pipework. • Line size changes achieved by the use of eccentric reducers. 6. See TI-P337-06 which provides an overview of the Gilflo ILVA metering system and further installation details. Maintenance There are no user serviceable parts in the Gilflo ILVA. A visual check together with confirmation that the orifice /cone reference dimension is within tolerance is possible. Full details are included in the manual that accompanies the meter. DN50 DN80 DN100 DN150 DN200 Maximum flow 1000 DF QL SG DF 1000 QE = QF QE = QS DS PS TF x x 1000 PF TS DF = Density of gas at flowing conditions (kg/m3) PS = Standard pressure = 1.013 bar a = 1.033 kg/cm² a = 14.70 psi a PF = Flowing pressure in same units as Ps TS = 273°K TF = Flowing temperature (°K) (°C + 273 = °K) 2. Using the value of QE as determined in 1, select the correct size of Gilflo ILVA meter using table 2. In practice, it will often be the line size that determines the choice of meter. Flowmeter type Max. QE Max. DP l /min. Wg 149 200 DN80 585 200 DN100 1 800 200 DN150 2 900 200 DN200 5 700 200 DN50 Example Determine which Gilflo pipeline unit is required to measure the flow of compressed air when: 1: Estimated maximum rate of flow = 500 s m³/h at 7 bar g and 20°C Note: Standard conditions = 1.013 bar a, 0°C giving a standard density of 1.29 kg /m³ DS PS TF x x 2: Calculate QE from QE = QS PF TS Ö 1000 QE = (500 x 16.667) x Ö 1.29 1.013 293 x x 1000 8.013 273 QE = 110 l /min. Maximum flow rates in kg /h at different pressures (bar g) Note: Maximum steam flowrates are calculated at maximum differential pressure. Steam pressure bar g QE = Where: QE = Equivalent water flowrate (l /min) M = Mass flowrate (kg /min) QL = Max liquid flowrate (l /min) QS = Max gas flowrate at standard conditions (l /min) QF = Max gas flowrate at flow conditions (l /min) SG = Specific gravity DS = Density of gas at standard conditions (kg /m³) Sizing the Gilflo ILVA for saturated steam - kg/h Size Volumetric units M SG Liquids So a DN50 ILVA is recommended. Note: 1m3 /h = 16.667 l /min 1 3 5 7 10 12 15 20 25 30 40 300 416 503 577 671 727 804 918 1020 1113 1283 Minimum flow 3 4 5 6 7 7 8 9 10 11 13 Maximum flow 1179 1632 1976 2264 2635 2855 3156 3603 4003 4371 5039 Minimum flow 12 16 20 23 26 29 32 36 40 44 50 Maximum flow 3629 5023 6080 6967 8108 8784 9709 11085 12317 13449 15505 Minimum flow 36 50 61 70 81 88 97 111 123 134 155 Maximum flow 5847 8092 9795 11224 13062 14152 15643 17859 19843 21667 24980 Minimum flow 58 81 98 112 131 142 156 179 198 217 250 Maximum flow 11492 15905 19252 22061 25674 27816 30746 35101 39002 42587 49098 Minimum flow 115 159 193 221 257 278 307 351 390 426 491 TI-P337-05 MI Issue 5 3.2.2 3.2 Flowmetering TI-P337-06 MI Issue 3 Cert. No. LRQ 0963008 ISO 9001 Gilflo ILVA Flowmeters System Overview Description The Spirax Sarco Gilflo ILVA flowmetering system consists of two major parts: EL2271 temperature transmitter 1. The Gilflo ILVA pipeline unit. This is installed in the line where the flow is to be measured. Using impulse pipework, this is connected to: 3.2 2. The M610 DP transmitter assembly. This measures the differential pressure across the Gilflo ILVA pipeline unit and converts it to a 4 - 20 mA output signal. This output signal can be used in a number of ways: i - To act as a suitable input to an EMS /BEMS which can be programmed by the user to carry out the linearising of the output signal based on the calibration data that is supplied with each Gilflo ILVA flowmeter. Additional inputs from the EL2600 pressure transmitter and EL2271 temperature transmitter can be used to carry out density compensation for compressible flow applications. ii - To supply an M700 display unit. This gives a noncompensated display of rate of flow and totalised flow. It is suitable for liquid, gas and steam applications where density compensation is not required. iii - To supply an M240G (steam) or M250G (gas) flow computer. Use of the pressure and temperature transmitters enables automatic density compensation to be carried out for compressible flow applications. See relevant TI’s for details of pressure / temperature limits for M240G / M250G flow computers. Gilflo ILVA EL2600 pressure transmitter F50C isolation valves M610 DP transmitter assembly (for gas applications the M610 DP transmitter is mounted above the Gilflo ILVA) The Gilflo ILVA pipeline unit can be used to measure the flow of most industrial liquids, gases and vapours within the pressure and temperature limits detailed in the TIs. Installation Care must be taken to meet all the requirements of the Installation and Maintenance Instructions that are included with the equipment. Some installation points to watch are noted overleaf. In addition, heat metering is possible on saturated steam systems by replacing the EL2600 pressure transmitter with an EL2271 temperature transmitter in the condensate return line (M240G system only). EMS / BEMS or M700 display unit Electrical wiring All electrical wiring must be carried out to the appropriate standards. Full wiring interconnection details are included with the equipment. Associated equipment Item M610 Gilflo ILVA EL2271 EL2600 M700 F50C M240G M250G 3.2.3 Description DP transmitter assembly Pipeline unit Temperature transmitter Pressure transmitter Display unit Isolation valve Steam flow computer Gas flow computer Technical literature TI-P335-10 TI-P337-05 TI-P322-01 TI-P322-02 TI-P335-09 TI-P170-01 TI-P330-48 TI-P330-53 Outputs, alarms, etc. or M240G flow computer (steam) Outputs, alarms, etc. or M250G flow computer (gases) Outputs, alarms, etc. Gilflo flowmeters Installation points to watch: 1. Ensure that all pipework is adequately supported and properly aligned. Special care should be taken to ensure that the Gilflo ILVA pipeline unit is concentrically mounted in the line. (Special installation kits are available to order for sizes DN50 to DN200). 2. The Gilflo ILVA pipeline unit should be selected on capacity rather than line size. Where line size changes on steam systems are necessary, use eccentric reducers to avoid build-up of condensate. 3. The minimum recommended lengths of straight pipe upstream and downstream are 6 D and 3 D respectively. See (TI-P337-05) for more details concerning the Gilflo ILVA. 4. Take care to ensure the correct direction of flow as indicated by the arrow on the flowmeter body. 5. Take care to avoid reverse flow through the flowmeter. 6. Avoid installing the flowmeter downstream of a pressure reducing valve (especially on steam systems) as this may cause inaccurate readings. Similarly, avoid installing the flowmeter downstream of a partially open valve. 7. Remember that actuated valves may cause rapid pressure fluctuations which could cause damage. 8. On steam or liquid systems, the M610 DP transmitter assembly is mounted below the flowmeter. Take care to ensure that all impulse lines remain full to prevent damage to the DP transmitter through contact with steam or high temperature liquid. 9. For steam applications, care should be taken to ensure adequate line drainage, trapping etc., so as to avoid condensate slugs impacting the flowmeter. Where practicable, steam separators should be fitted. These should be drained using a float trap set. 10. For gas applications, the M610 DP transmitter assembly is installed above the pipework. Ensure that the impulse lines allow free drainage of moisture away from the DP transmitter and back into the pipeline. 3.2 TI-P337-06 MI Issue 3 3.2.4 Flowmetering TI-P337-09 MI Issue 1 ISO 9001 Gilflo Flowmeters - 'Spool' Pipeline Unit Note: DN300 flowmeter incorporates an additional shaft support together with a revised spring location. Low DP tapping 3.2 High DP tapping Description Accuracy The Gilflo 'Spool' flowmeter is installed in the pipeline and produces a differential pressure which is related to the rate of flow. It can be used with most industrial fluids, gases and both saturated and superheated steam. When used in conjunction with an M200 series flow computer, M640 steam mass flow transmitter or M700 display unit, accuracy is better than ±1 % of actual flow from 5 % to 100 % of maximum rated flow. For flows from 1 % to 5 % of maximum rated flow, accuracy will be better than ±0.1 % FSD. Repeatability is better than 0.25 %. Sizes and pipe connections DN80, 100, 150, 200 and 300 Flanges available to BS 4504 PN40 and ANSI B.16.5 class 300 Pressure drop Less than 140 inches H2O (349 mbar) at rated capacity Limiting conditions Flow capacity Minimum operating pressure Maximum operating pressure Minimum operating temperature Maximum operating temperature Maximum viscosity To determine the maximum flow capacity of a Gilflo 'Spool', it is necessary to calculate the equivalent water flowrate (QE). See under section "Sizing the Gilflo 'Spool' flowmeter". 0.6 bar g 51 bar g -50°C 450°C 30 centipoise Materials of construction Body Internals Spring Temperature °C Operating range A 450 400 300 B Carbon steel Mostly stainless steel Inconel X750 ASTM A105 / A106 / A234 S304 / S316 200 Steam saturation curve 100 0 -50 0 3.2.5 10 20 A 30 B 40 51 Pressure bar g The product should not be used in this region. A-A B-B Flanged PN40 Flanged ANSI 300