Pressure Regulators. Aperflux 851

Pressure Regulators Aperflux 851

80 1 2 3 4 5 6 7 Aperflux 851 > Pressure regulators Introduction Aperflux 851 is a boot style pilot-controlled pressure regulator for medium and high pressure applications. Aperflux 851 is normally a failed open regulator and will open under the following conditions: - damage of main pilot diaphragm; - lack of the pilot loop supply. These regulators are suitable for use with previously filtered, non-corrosive gases. MAX M 7 6 5 4 3 2 1 I N Aperflux 851

Main eatures The modular design of Aperflux 851 pressure regulators allows retrofitting of an emergency monitor PM/819, slam shut valve and or silencer on the same body. The Aperflux 851 regulator is truly a top entry design which allows ease of maintenance or retrofitting options in the field. Our one piece molded diaphragm with main single orifice provides long life and shutoff. Aperflux 851 + PM/819 Aperflux 851 + /851 + S/82 esigned With Your Needs In Mind - ompact esign - igh Turn own Ratio - asy Maintenance - igh Accuracy - Top ntry - Low Operation cost - Low Noise - xtreme lexibility

Main eatures -esign pressure: up to 1450 Psi (100 bar) -esign temperature: - 4 to + 140 (-20 to +60 ) > -Range of inlet pressure bpe: 4.5 to 1232 Psig (1 to 85 ar) -Range of outlet pressure Wh: 12 to 1073 Psig (0.8 to 74 ar) depending on installed pilot -Minimum working differential pressure: 7 Psig (0.5 ar) - Recommended > 30 Psig (2 ar) -Available size : 1-2 - 3-4 - 6-8 - 10 -langing: class 150-300-600 R or RTJ according to ANSI 16.5 Materials ody ead covers iaphgram Valve seat Seals ompression fittings ast steel ASTM A352 L for rating 300 and 600 ASTM A216 W for rating 150 Rolled or forged carbon steel Vulcanized rubber Stainless steel for size 3 arbon Steel with seal edge in stainless steel for size 4" Nitrile rubber SS ual Lock ompression type The characteristics listed above are referred to standard products. Special characteristics and materials for specific applications may be supplied upon request.

( ( Aperflux 851 hoosing the pressure regulator Sizing of regulators is usually made on the basis of g gas sizing coefficients (table 1). low rate at fully open position and various operating conditions are related by the following formula where: Q = flow rate in scfh Pu = inlet pressure in psia (abs) Pd = outlet pressure in psia (abs) K1 = body shape coefficient (table 1) A > When the g value of regulator is known, as well as Pu and Pd, the flow rate can be calculated as follows: A-1 in sub critical conditions: (Pu < 2 x Pd) A-2 in critical flow conditions: (Pu 2 Pd) Q = 1.280 x g x Pu x sin ( K 1 x Pu - Pu Pd deg Q = 1.280 x g x Pu > Vice versa, when the values of Pu, Pd and Q are known,the g values, and hence the regulator size, may be calculated using: -1 in sub-critical conditions: (Pu < 2 x Pd) g = -2 in critical conditions: (Pu 2 x Pd) 1.280 x Pu x sin ( K Q 1 x Pu - Pu Pd deg g = Q 1.280 x Pu NOT: The sin val is understood to be. Table 1: g and Kg coefficient Size (inches) 1" g coefficient 565 Kg coefficient 593 K1 coefficient 113.9 *Value with incorporated flow conditioner 2" 1823 1916 113.9 3" 4400 5194 113.9 4" * 6943 7297 113.9 6" * 13890 14598 113.9 8" * 21645 22748 113.9 10" * 30685 32250 113.9

Aperflux 851 > Pressure regulators This formula is applicable to natural gas having a gas specific gravity 0.61 (air = 1) and a regulator gas inlet temperature of 60. or gases having different specific gravity S and regulator inlet temperature t in, the value of the flow rate, calculated as above, must be multiplied by a correction factor, as follows: c = S x 317.20 ( 460 + t ) Table 2 lists the correction factors c for a number of gases at 60. Table 2: orrection factors Type of gas Air Propane utane Nitrogen Oxygen arbon dioxide Specific gravity 1.0 1.53 2.0 0.97 1.14 1.52 c actor 0.78 0.63 0.55 0.79 0.73 0.63 aution: In order to get optimal performance, avoid premature diaphragm failure and limit noise emissions, it is recommended that the gas speed at the outlet flange does not exceed 492 ft/sec (150m/s). The gas speed at the outlet flange may be calculated by means of the following formula: V = 10.02 x Q 2 N 1 x 1+ (0.06895 x Pd) where: V = gas speed in ft./sec Q = gas flow rate in S N = nominal size of regulator in inches Pd = outlet pressure in psig (pressure gauge)

Pilots System Pilots Aperflux 851 regulators are equipped with series 300 pilot as listed below: - 302/ control range set point: 11 to 138 psig; (0.8 to 9.5 bar) - 304/ control range set point: 100 to 625 psig; (7 to 43 bar) - 305/ control range set point: 290 to 870 psig; (20 to 60 bar) - 307/ control range set point: 595 to 1073 psig; (41 to 74 bar) Pilots may be adjusted manually or remotely as shown in table 3: Table 3: Pilot adjusting instructions Pilot type.../a Pilot type.../ Pilot type.../s Manual setting lectric remote setting control Remote Set point increased by pneumatic signal The Pilot system comes complete with an adjustable AR100 restrictor. The flow rate of the pilot system is controlled by the bleed rate through AR100 restrictor. The K coefficients of the AR100 adjustable restrictor for its various degrees of opening are shown on ig.3. K formula used for calculating the flow rate of regulator can be applied for adjustable restrictor AR100. It is necessary to consider that pressure drop through the adjustable AR100 restrictor should be about 2.9 PSI (0.2 bar) at the minimum opening flow of the regulator and about 14.5 PSI (1 bar) at the maximum opening flow of regulator main diaphragm. Accessories The pilot loop may be completed with the accessories listed below: - supplementary filter 14 - dehydrating filter - flow-limiting - travel indicator - stainless steel fittings with single or dual sealing egrees of opening ig.3

MAX M 80 1 2 3 4 5 6 7 I N Aperflux 851 > Pressure regulators Incorporated silencer /819 Whenever specific decibel levels are required, the silencer allows you to considerably reduce the decibel (da) noise emissions during the gas pressure regulators operation as in example (ig. 4). The diagram in ig.5 demonstrates the silencers efficiency at specified working conditions. The Aperflux 851 pressure regulator can be supplied with an incorporated silencer in either the standard version, with incorporated slam-shut or incorporated monitor regulator. With the built-in silencer the g and K valve coefficients are only slightly lower than the corresponding version without the silencer. iven the modular arrangement of the regulator, the silencer may be retrofitted to both standard Aperflux 851 version as well as those with incorporated slam-shut or monitor, without any piping modification. Pressure reduction and control operate in the same manner as standard version. 7 6 5 4 3 2 1 da (A) 100 Noise level 95 90 85 80 75 70 65 60 Not silenced Silenced Aperflux N 4" Pu = 1000 PSI Pd = 70 PSI 55 0 175 350 525 700 875 1050 low rate S x 1000 Aperflux 851 + /851 ig.4 ig.5

MAX M 80 1 2 3 4 5 6 7 I N Monitor The monitor regulator is used for over pressure protection either as a single unit or in conjunction with a relief valve. It is an emergency regulator that comes into operation when the main control regulators downstream operating pressure increases until reaching the monitor set-point pressure. The Monitor regulator is then available to take over the pressure control. The Monitor regulator is available in two versions, incorporated in the same regulator body as the control regulator or installed as a separate regulator. PM/819 Incorporated This emergency regulator (monitor) is directly assembled to the body of the main regulator. oth pressure regulators, therefore, use the same valve body with the following exceptions: - are governed by two independent pilots and by separate regulator valve seats. - the operational characteristics of the PM/819 monitor are the same as for the Reflux 819 regulator (refer to specific catalog). - the g and K coefficients of regulator having an incorporated monitor are equivalent to approximately 93% of those for standard version. Another great advantage offered by the incorporated monitor regulator is that it can be installed at any time, even on an already existing Aperflux 851, without piping modifications. 7 6 5 4 3 2 1 Aperflux 851+ PM/819 ig.6

MAX M 80 1 2 3 4 5 6 7 80 1 2 3 4 5 6 7 7 6 5 4 3 2 1 I N MAX M 7 6 5 4 3 2 1 I N MAX M 80 1 2 3 4 5 6 7 7 6 5 4 3 2 1 I N Aperflux 851 > Pressure regulators In-line monitor The monitor is generally installed upstream of the main regulator. Although the function of the monitor regulator is different, the two regulators are virtually identical from the point of view of their mechanical components. The only difference is that the monitor is set at a higher pressure than the main regulator. The g and K coefficients of the regulator plus in-line monitor system are about 20% lower than those of the regulator alone. R14/A 204/A M/A AR.. AR.. RLUX 819 AR.. 302/A-304/A 302/A-304/A 302/A-304/A APRLUX 851 APRLUX 851 RLUX 819 APRLUX 851 ig.7 ig.8 M/A Accelerator When the monitor is required to take over more rapidly in the event of a main regulator failure, an M/A accelerator pilot is installed on the monitor (ig. 8). epending on a downstream pressure signal, this device discharges the gas enclosed in the motorization chamber of the monitor regulator, allowing the monitor to take over faster. The set point of M/A accelerator is usually set higher than set point of the monitor by 4 to 7 Psig.

MAX M 80 1 2 3 4 5 6 7 I N MAX M 80 1 2 3 4 5 6 7 I N Slam shut This device immediately stops gas flow (SAV) whenever a failure causes downstream pressure to rise reaching the set point of the slam-shut itself. The slam-shut device can also be closed manually. Incorporated Slam shut The Aperflux 851 pressure regulator offers the possibility of installing an incorporated slum shut valve S/82 (fig. 9) or /97 valve (fig.10), either from the factory or retrofit in the field. The g and K coefficients of a regulator plus incorporated slam-shut system are equivalent to about 93% of those for standard versions. The incorporated slam shut can also be retrofitted to Aperflux 851 regulators without modifying the pressure regulator assembly. The main characteristics of this device are: - overpressure and underpressure pressure shut off; - manual push-button control; - option for pneumatic or electromagnetic remote control; - manual re-setting with internal by-pass activated by the lever mechanism; - compact dimensions; - easy maintenance; - possibility of installing remote signal devices (contact switches or proximity switches). 7 6 5 4 3 2 1 7 6 5 4 3 2 1 ig.9 ig.10

Aperflux 851 > Pressure regulators Installation Whenever Aperflux 851 pressure regulator is being installed, it is essential to follow a few basic rules in order to ensure the equipment s operational and performance characteristics. These rules may be summarized as follows: a) iltering: the gas arriving from the main pipeline must be adequately filtered; it is also advisable to make sure that the pipe upstream of the regulator is perfectly clean and void of residual impurities; b) Pre-heating: whenever the pressure drop at the regulator is considerable, the gas must be pre-heated enough to avoid the formation of ice during decompression (for reference the natural gas temperature drop is about 1 for every 14.5 PSI of pressure reduction); c) ondensate collector: natural gas sometimes contain traces of vapor-state hydrocarbons that can interfere with the functioning of the pilot. It is therefore necessary to install a condensate collector, complete with drainage system, upstream of the pilot circuit; d) Outlet pipe size must also be sized correctly so the velocity is not to high. igh velocity will result in improper pressure control. e) Impulse take-off: for correct operation, the impulse take-off must be located in the right position. etween the regulator and the downstream take-off there must be a straight length of pipe 4 times the diameter of the outlet pipe and downstream of the take-off, there must be a further length of pipe 2 times the same diameter (example below). Possible installation schemes Aperflux 851 + PM/819 Inlet pressure Outlet pressure Motorization monitor Pre-regulator feed eed pilot Motorization regulator eed pilot

APRLUX 851 +APRLUX 851 + S/82 APRLUX 851 + RLUX 819 + S/82 APRLUX 851 + RLUX 819/MO +S82

Aperflux 851 > Pressure regulators Aperflux 851 A N N S Overall dimensions in Inches Inches 1 S - Ansi 150 7.25 S - Ansi 300 7.75 S - Ansi 600 8.25 4.92 A 7.87 9.06 3.94 5.12 5.51 6.30 10.25 11.81 Note: onnections for tubing diameter 1/4" NPT. 2 10.00 10.50 11.25 6.30 9.06 10.24 5.12 6.30 5.71 6.89 11.00 14.17 3 11.75 12.50 13.25 9.65 11.81 13.39 5.91 7.87 7.48 8.66 13.75 17.72 4 13.88 14.50 15.50 11.42 13.39 14.96 7.48 9.84 8.27 9.45 15.00 20.87 6 17.75 18.62 20.00 15.16 16.54 18.50 9.45 11.81 10.24 11.42 17.75 25.98 8 21.38 22.38 24.00 19.29 17.91 20.08 10.43 12.60 12.40 13.58 19.25 28.35 10 26.50 27.88 29.62 24.21 22.83 20.47 13.39 17.32 14.57 16.34 15.00 36.22 Weights in pounds ANSI 150 ANSI 300 ANSI 600 44 46 49 77 79 84 168 181 187 258 282 304 518 567 639 738 871 959 1543 1653 1874

Aperflux 851 + S/82 A N N * * S Overall dimensions in Inches Inches S - Ansi 150 S - Ansi 300 S - Ansi 600 A 1 7.25 7.75 8.25 4.92 7,87 9.06 8.46 12.60 5.51 6.30 10.25 2 10.00 10.50 11.25 6.30 9.06 10.24 9.45 14.57 5.71 6.89 11.00 18.50 16.34 Note: onnections for tubing diameter 1/4" NPT. *indicates dimensions with the MOL /97 3 11.75 12.50 13.25 9.65 11.81 13.39 10.63 16.54 7.48 8.66 13.75 22.44 4 13.86 14.50 15.50 11.42 13.39 14.96 11.81 18.90 8.27 9.45 15.00 25.20 20.40* 25.59* 14.10* 6 17.75 18.62 20.00 15.16 16.54 18.50 14.76 23.62 10.24 11.42 11.72 31.30 25.34* 32.88* 16.15* 8 21.38 22.36 24.00 19.29 17.91 20.08 17.72 26.18 12.40 13.58 19.25 35.63 27.05* 35.43* 17.52* 10 26.50 27.88 29.62 24.21 22.83 20.47 26.77 31.34* 35.43 41.73* 14.57 20.08* 16.34 15.00 49.61 Weights in pounds ANSI 150 ANSI 300 ANSI 600 60 60 67 97 101 106 190 203 212 287 320 342 574 640 706 882 1037 1125 1655 1765 1985

Aperflux 851 > Pressure regulators Aperflux 851 + PM/819 N N P Overall dimensions in Inches S K Inches 1 S - Ansi 150 7.25 S - Ansi 300 7,75 S - Ansi 600 8.27 4.82 9.06 12.60 16.14 14.57 10.63 10.24 20.47 K 10.94 P 6.69 Note: onnections for tubing diameter 1/4" NPT. 2 10 10.51 11.26 6.30 10.24 13.78 16.93 14.57 10.63 11.02 22.83 10.94 7.84 3 11.73 12.48 13.23 9.65 13.39 16.93 20.87 16.14 12.20 13.78 28.74 14.17 10.24 4 13.86 14.49 15.51 11.42 14.96 19.29 23.62 16.14 12.20 14.96 32.68 14.17 11.42 6 17.76 18.62 20 15,16 18.50 25.59 28,94 19,09 15,16 17.72 42.13 20.08 12.60 8 21.38 22.36 23.98 19.29 20.08 29.53 33.46 19.09 15.16 19.29 47.44 20.08 15.57 10 26.50 27.87 29.61 24.21 20.47 26.77 35.43 14.57 16.34 14.96 54.33 24.02 19.68 Weights in pounds ANSI 150 ANSI 300 ANSI 600 73 75 77 150 154 159 298 304 326 353 364 419 816 860 926 1157 1290 1378 2425 2535 2756

Aperflux 851 + /851 L A N N S Overall dimensions in Inches Inches 1 S - Ansi 150 7.25 S - Ansi 300 7.75 S - Ansi 600 8.27 8.66 A 13.98 18.31 3.94 5.12 6.38 7.56 14.57 17.91 L 22.05 Note: onnections for tubing diameter 1/4" NPT. 2 10 10.51 11.26 11.81 16.54 20.87 5.12 6.30 7.72 8.90 17.32 21.65 26.50 3 11.73 12.48 13.23 12.99 19.69 24.61 5.91 7.87 8.50 9.69 20.67 25.59 31.18 4 13.86 14.49 15.51 15.35 22.44 27.36 7.48 9.84 9.49 10.67 23.43 29.92 35.31 6 17.76 18.62 20 18.90 28.15 33.46 9.45 11.81 9.21 10.39 29.33 38.58 42.46 8 21.38 22.36 23.98 25.39 35.83 41.14 10.43 12.60 9.33 10.51 37,40 46.26 52.44 10 26.50 27.87 29.60 29.13 40.35 42.72 13.39 17.32 10.31 11.50 54.96 47.83 54.02 Weights in pounds ANSI 150 ANSI 300 ANSI 600 104 108 110 220 225 229 370 390 397 529 591 613 862 954 1027 1676 1839 1927 2734 2848 3069

Aperflux 851 > Pressure regulators Aperflux 851 + S/82+/851 A N N * S * Overall dimensions in Inches Inches S - Ansi 150 S - Ansi 300 S - Ansi 600 A 1 7.25 7.75 8.25 8,66 13.19 18.31 8.46 12.60 7.56 19.09 22.44 26.57 Note: onnections for tubing diameter 1/4" NPT. *indicates dimensions with the MOL /97 2 10 10.51 11.26 11.81 16.54 20,87 9.45 14.57 8.90 21.65 25.98 30.83 3 11.73 12.48 13.23 12.99 19,69 24.61 10.63 16.54 9.69 25.39 30.31 35.91 4 13.86 14.49 15.51 15.35 22.44 27.36 11.81 18.90 10.67 27.76 34.25 39.65 20.39* 25.59* 15.16* 6 17.76 18.62 20 18.90 28.15 33.46 14.76 23.62 10.39 34.65 43.90 47.87 25.39* 32.87* 16.14* 8 21.38 22.36 23.98 25.39 35.83 41.14 17.72 26.18 10.51 44.68 53.54 59.72 27.05* 35.43* 17.52* 10 26.50 27.87 29.61 29.13 40.35 42.72 26.77 35.43 11.50 60.47 61.22 67.40 31.34* 41.73* 20.08* Weights in pounds ANSI 150 ANSI 300 ANSI 600 119 123 128 240 247 251 392 412 421 562 624 648 917 1027 1100 1818 2004 2092 2844 2959 3179

Aperflux 851 + /851 + PM/819 A I N N Overall dimensions in Inches S K Inches 1 S - Ansi 150 7.25 S - Ansi 300 7.75 S - Ansi 600 8.27 8.66 A 13.19 18.3 12.60 16.14 7.56 10.63 23.23 26.97 I 35.63 Note: onnections for tubing diameter 1/4" NPT. 2 10 10.51 11.26 11.81 16.54 20.87 13.78 16.93 8.90 10.63 25.98 29.53 38.19 3 11.73 125 13.23 12.99 19.68 24.60 16.93 20.87 9.69 12.20 31.69 35.63 46.65 4 13.86 14.49 15.51 15.35 22.44 27.36 19.29 23,62 10.67 12.20 35.24 39.17 50.98 6 17.76 18.62 20 18.90 28.15 33.46 25.59 28.94 10.38 15,16 45.47 49.60 65.75 8 21.38 22.36 23.98 25.39 35.83 41.14 29.53 33.46 10.51 15,16 56.50 60.24 79.33 10 26,50 27,87 29.61 29,13 40.35 42.72 31.50 35.43 11.50 16.34 73.07 60.83 78.94 Weights in pounds ANSI 150 ANSI 300 ANSI 600 132 137 139 293 298 302 492 511 518 650 717 739 1160 1252 1325 2094 2258 2346 3616 3730 3951

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