SG TF. Q = 963 Cv (P1 - P2)(P1 + P2) TECHNICAL INFORMATION. Flow Q (GPM)

Transcription

1 TECHNICAL INFORMATION BuTech designs all pressure-containing equipment to meet or exceed the applicable requirements of Section VIII, Division1 or Division 2 of the ASME Boiler and Pressure Vessel Code and applicable requirements of B31.3, ASME Code for Pressure Piping, maintaining a minimum safety factor of three-to-one (3:1). Furthermore, we believe that the design and manufacture of these components in accordance with this code meets or exceeds the requirements of numerous other national and international codes, specifications and requirements. BuTech presents this section as a guideline in assisting of proper selection of material, design features, and options for valves, fittings, and tubing that require precise control of liquid and gas flows. All charts and tables are for reference only because of the many process variables. BuTech s technical staff is available to assist in any questions concerning this information, or assist in selecting BuTech product Flow Q (GPM).688 Q = 963 Cv (P1 - P2)(P1 + P2) SG TF Topic Conversion Tables Flow Formulas Material vs Pressure Rating Pressure Drop Curves Pressure vs Bend Radius Pressure vs Temperature Curves Pressure/Temperature Rating Guide Page Tech-11 Tech-8 Tech-4 Tech-9 Tech- Tech-6 Tech-2 Tech-9 Page Tech EBCO Drive, Suite 1 Erie, PA 166 USA Ph: (814) Fax: (814) hq@butech-valve.com

2 PRESSURE/TEMPERATURE RATING GUIDE Information in this rating guide is furnished for reference in approximating the pressure/temperature capabilities of BuTech valves with various options. To determine approximate ratings, the following factors should be considered: Refer to individual sections to determine pressure rating of component at room temperature. Refer to Pressure/Temperature Rating Curve on page Tech-3 to determine pressure at desired temperature. Refer to tubing section for pressure ratings of standard tubing at various temperatures to 8 o F (427 C). Note maximum temperature ratings for needle valves with various packing options in the table below. Note temperature information checklist on page Tech-3. Standard Standard Glass-Filled Optional Virgin Optional Glass-Filled Teflon Teflon/Nylatron Teflon Packing Grafoil 1 Valve Series Stem Type Min Max Min Max Min Max Min Max SLPV 2 Vee or Regulating F Metal to Metal (-73) (343) (-73) (232) (-18) (427) C SFPV Vee or Regulating F Metal to Metal (-73) (343) (-73) (232) (-18) (427) C DHP Vee or Regulating F Metal to Metal (-73) (343) (-73) (232) (-18) (427) C Vee or Regulating F UV3 Metal to Metal (-73) (343) (-73) (232) (-18) (427) C UV Vee or Regulating F Metal to Metal (-73) (343) (-73) (232) (-18) (427) C UV Vee or Regulating F Metal to Metal (-73) (1) (-18) (427) C 6UV Vee or Regulating F Metal to Metal (-73) (1) (-18) (427) C Notes: 1. Optional grafoil packing not recommended for hydrogen or helium service. 2. Compression type (L/P) connections not recommended for service above 6 o F (343 o C) or below o F (-18 o C). For these applications, BuTech recommends medium pressure M/P Coned-and-Threaded connections. 3. Chart above refers to sizes through 9/16" only. Consult factory for 3/4" and 1" sizes. Page Tech EBCO Drive, Suite 1 Erie, PA 166 USA Ph: (814) Fax: (814) hq@butech-valve.com Tech-9

3 PRESSURE/TEMPERATURE RATING GUIDE Pressure/Temperature Rating Curve for Cold Worked 316 S.S CW Type 316SS Before 8 o F CW Type 316SS After 8 o F Temperature in o F Notes: 1. This curve is valid for cold-worked type 316 stainless steel components providing operating temperature does not exceed 8 o F (426 o C). After this temperature, the material is PERMANENTLY altered, and the component should be considered as annealed from then on, derating it to % of its cold-worked value. 2. Curves and ratings presented here are average values for reference only, and can be significantly affected by pressure and temperature charactistics of packing and trim materials. For extreme pressure/temperature requirements, please contact factory for recommendations. 3. For pressure/temperature information for other materials, please see pages Tech-4 thru Tech-7. Temperature Information Checklist -423 to - F - to F to 6 F 6 to 8 F 8 to 1 F -253 to -73 C -73 to -18 C -18 to 343 C 343 to 427 C 427 to 649 C Compression Type Not Not Recommended Not Not Connections Recommended Recommended Recommended Recommended Coned-and-Threaded Required Required Recommended Required Required Connections Extended Stuffing Box Required May be requiredmay be requiredmay be required Required (See note 1) (See note 2) (See note 2) (See note 2) (See note 3) Notes: 1. Packing temperature not to go below - o F (-73 o ) 2. Extended Stuffing box required for operation below - o F (-73 o ) and above 4 o F (232 o C) (with Teflon packing) or 6 o F (315 o C) (with Teflon Glass packing). 3. Packing temperature not to exceed 8 o F (427 o C) Tech-9 Page Tech EBCO Drive, Suite 1 Erie, PA 166 USA Ph: (814) Fax: (814) hq@butech-valve.com

4 MATERIAL VS. PRESSURE RATING - VALVES/FITTINGS Valve Tube Series Conn Size SLPV2 1/8" L/P 1/8" SLPV4 1/4" SL/P 1/4" SLPV6 3/8" SL/P 3/8" SLPV8 1/2" L/P 1/2" UV4 1/4" M/P 1/4" UV6 3/8" M/P 3/8" UV9 9/16" M/P 9/16" V12 3/4" M/P 3/4" V16 1" M/P 1" UV4 1/4" H/P 1/4" UV6 3/8" H/P 3/8" UV9 9/16" H/P 9/16" V16 1" H/P 3/4" UV9 9/16" H/P 9/16" 6UV4 1/4" H/P 1/4" 6UV6 3/8" H/P 3/8" 6UV9 9/16" H/P 9/16" Material vs. Pressure Room Temperature* 316CW Hastelloy Super Titanium (Std) C276 Inconel 6 Inconel 625 Monel Duplex 27 6AL4V 15. PSI 12, PSI 12, PSI 12, PSI 11, PSI 12, PSI 12, PSI bar 86 bar 86 bar 86 bar 76 bar 86 bar 86 bar 11, PSI, PSI 7, PSI, PSI 7, PSI 11, PSI 11, PSI 79 bar 69 bar 5 bar 69 bar 48 bar 79 bar 79 bar 7, PSI 7, PSI 7, PSI 7, PSI 6, PSI 7, PSI 7, PSI 5 bar 5 bar 5 bar 5 bar 4 bar 5 bar 5 bar 5, PSI 5, PSI 5, PSI 5, PSI 4,6 PSI 5, PSI 5, PSI 38 bar 38 bar 38 bar 38 bar 3 bar 38 bar 38 bar, PSI 12, PSI 9, PSI 12, PSI, PSI, PSI, PSI 138 bar 8 bar 6 bar 8 bar 69 bar 138 bar 138 bar, PSI 12, PSI 9, PSI 12, PSI, PSI, PSI, PSI 138 bar 8 bar 6 bar 8 bar 69 bar 138 bar 138 bar, PSI 12, PSI 9, PSI 12, PSI, PSI, PSI, PSI 138 bar 8 bar 6 bar 8 bar 69 bar 138 bar 138 bar, PSI 12, PSI 9, PSI 12, PSI, PSI, PSI, PSI 138 bar 8 bar 6 bar 8 bar 69 bar 138 bar 138 bar, PSI 12, PSI 9, PSI 12, PSI, PSI, PSI, PSI 138 bar 8 bar 6 bar 8 bar 69 bar 138 bar 138 bar, PSI 21, PSI 16, PSI, PSI 12, PSI, PSI, PSI 7 bar 14 bar 11 bar 138 bar 8 bar 7 bar 7 bar, PSI 21, PSI 16, PSI, PSI 12, PSI, PSI, PSI 7 bar 14 bar 11 bar 138 bar 8 bar 7 bar 7 bar, PSI, PSI, PSI, PSI 12, PSI, PSI, PSI 7 bar 7 bar 138 bar 7 bar 8 bar 7 bar 7 bar, PSI 21, PSI 16, PSI, PSI 12, PSI, PSI, PSI 7 bar 14 bar 11 bar 138 bar 8 bar 7 bar 7 bar, PSI 35, PSI 25, PSI 35, PSI, PSI, PSI, PSI 276 bar 24 bar 17 bar 24 bar 138 bar 276 bar 276 bar 6, PSI 35, PSI 27, PSI 35, PSI, PSI 6, PSI 6, PSI 41 bar 24 bar 19 bar 24 bar 138 bar 41 bar 41 bar 6, PSI 35, PSI 27, PSI 35, PSI, PSI 6, PSI 6, PSI 41 bar 24 bar 19 bar 24 bar 138 bar 41 bar 41 bar 6, PSI 35, PSI 27, PSI 35, PSI, PSI 6, PSI 6, PSI 41 bar 24 bar 19 bar 24 bar 138 bar 41 bar 41 bar Notes: 1. For ratings at elevated temperatures, see Pressure/Temperature rating curves on pages Tech-6 and Tech Tubing, connection type and/or packing material may limit maximum temperature rating. See pages Tech-2 and Tech-3 for details. Page Tech EBCO Drive, Suite 1 Erie, PA 166 USA Ph: (814) Fax: (814) hq@butech-valve.com Tech-9

5 MATERIAL VS PRESSURE RATING - TUBING Tube Size Material vs. Pressure Room Temperature 1,2 OD x ID 316CW (Std)3 4CW Hastelloy C276 Inconel 6 Inconel 625 Monel 1/8" x.62 12, PSI 12, PSI 12, PSI 12, PSI 12, PSI, PSI 86 bar 86 bar 86 bar 86 bar 86 bar 69 bar 1/8" x.69 9, PSI 9, PSI 12, PSI, PSI 12, PSI 9, PSI 6 bar 6 bar 86 bar 7 bar 86 bar 6 bar 1/8" x.85 6, PSI 6, PSI 12, PSI 7, PSI 12, PSI 6, PSI 4 bar 4 bar 86 bar 48 bar 86 bar 4 bar 1/4" x , PSI 11, PSI 11, PSI 11, PSI 11, PSI, PSI 79 bar 79 bar 79 bar 79 bar 79 bar 69 bar 1/4" x.18 5, PSI 5, PSI 7, PSI 6,2 PSI 5, PSI 36 bar 36 bar 48 bar 4 bar 5 bar 38 bar 1/4" x.194 4, PSI 4, PSI 6, PSI 4,8 PSI 8, PSI 4, PSI 3 bar 3 bar 4 bar 3 bar 5 bar bar 3/8" x.2 7, PSI 7, PSI 7, PSI 7, PSI 7, PSI 6, PSI 5 bar 5 bar 5 bar 5 bar 5 bar 4 bar 3/8" x.277 5, PSI 5, PSI 6, PSI 5,6 PSI 7, PSI 5, PSI 3 bar 3 bar 4 bar 39 bar 5 bar 36 bar 3/8" x.5 3, PSI 3, PSI 4, PSI 4, PSI 6, PSI 3, PSI 2 bar 2 bar 3 bar 28 bar 4 bar 2 bar 1/2" x.375 5, PSI 5, PSI 7, PSI 5, PSI 7, PSI 4,6 PSI 38 bar 38 bar 48 bar 3 bar 48 bar 3 bar 1/2" x.2 3, PSI 3, PSI 5, PSI 4, PSI 7, PSI 3, PSI 2 bar 2 bar 3 bar 28 bar 48 bar 2 bar 1/4" x.9, PSI, PSI, PSI, PSI 15, PSI, PSI 138 bar 138 bar 69 bar 69 bar bar 69 bar 3/8" x.3, PSI, PSI, PSI, PSI 15, PSI, PSI 138 bar 138 bar 69 bar 69 bar bar 69 bar 9/16" x.312, PSI, PSI, PSI, PSI 15, PSI, PSI 138 bar 138 bar 69 bar 69 bar bar 69 bar 9/16" x.359, PSI, PSI 8, PSI 6, PSI, PSI 6, PSI 69 bar 69 bar 5 bar 4 bar 69 bar 4 bar 3/4" x.438, PSI, PSI, PSI, PSI 15, PSI, PSI 138 bar 138 bar 69 bar 69 bar bar 69 bar, PSI, PSI 8, PSI 6, PSI, PSI 6, PSI 3/4" x bar 69 bar 5 bar 4 bar 69 bar 4 bar, PSI, PSI 18, PSI 13,2 PSI 15, PSI 12,7 PSI 1" x bar 7 bar 12 bar 9 bar bar 88 bar, PSI, PSI, PSI, PSI 15, PSI, PSI 1" x bar 138 bar 69 bar 69 bar bar 69 bar, PSI, PSI 8, PSI 6, PSI, PSI 6, PSI 1" x bar 69 bar 5 bar 4 bar 69 bar 4 bar 6, PSI 6, PSI 28, PSI 22, PSI 38, PSI, PSI 1/4" x bar 41 bar 19 bar 15 bar 26 bar 138 bar 6, PSI 6, PSI 28, PSI 22, PSI 38, PSI, PSI 3/8" x bar 41 bar 19 bar 15 bar 26 bar 138 bar 6, PSI 6, PSI 28, PSI 22, PSI 38, PSI, PSI 9/16" x bar 41 bar 19 bar 15 bar 26 bar 138 bar, PSI, PSI, PSI 15, PSI 28, PSI 15, PSI 9/16" x bar 276 bar 138 bar bar 19 bar bar Notes: 1. In some instances, the pressure rating of tubing is lower than the rating of the valves and fittings. 2. For ratings at elevated temperatures, see Pressure/Temperature rating curves on pages Tech-6 and Tech Tubing, connection type and/or packing material may limit maximum temperature rating. See pages Tech-2 and Tech-3 for further details. 4. Except low pressure series which is 316 annealed. 5. Tubing is seamless except Hastelloy C276 which is welded and drawn or seamless. Tech-9 Page Tech EBCO Drive, Suite 1 Erie, PA 166 USA Ph: (814) Fax: (814) hq@butech-valve.com

6 PRESSURE VS TEMPERATURE RATING CURVES Curves and ratings presented here are average values for reference only. These values can be significantly affected by pressure and temperature charactistics of trim materials, stem packing materials or o-ring, and connection type. Other options such as extended stuffing box will be required to achieve the maximum temperature rating. See pages Tech-2 through Tech-3 for details. For extreme pressure/temperature requirements, please contact factory for recommendations. To obtain the maximum pressure rating at an elevated temperature, multiply the maximum pressure rating of the item in special material at room temperature, by the elevated temperature factor (% of Design Temperature) Hastelloy C276 Inconel (38) (93) (149) (4) (26) 6 (315) 7 (371) Temperature F ( C) 8 (426) (482) (537) (593) (649) Inconel 625 (38) (93) (149) (4) (26) 6 (315) 7 (371) Temperature F ( C) 8 (426) (482) (537) (593) (649) (38) (93) (149) (4) (26) 6 (315) 7 (371) Temperature F ( C) 8 (426) (482) (537) (593) (649) Page Tech EBCO Drive, Suite 1 Erie, PA 166 USA Ph: (814) Fax: (814) hq@butech-valve.com Tech-9

7 PRESSURE VS TEMPERATURE RATING CURVES Example: Determine the pressure rating of a 1/4" UV valve constructed of Hastelloy C276 with an operating temperature of 6 o F. From the Material vs Pressure Rating chart on page Tech-4, the maximum pressure rating for a UV valve constructed of Hastelloy C276 would be 21, PSI at room temperature. Turn to the Pressure vs Temperature rating curves on pages Tech-6 and Tech-7. Find 6 o F on the X-axis of the Hastelloy C-276 chart. Follow the line up to read a value of 95%. Multiplying the room temperature rating by this reduction factor (21, x.95) yields a rating of 19,9 PSI at 6 o F. Monel Super Duplex (38) (93) (149) (4) (26) 6 (315) 7 (371) Temperature F ( C) 8 (426) (482) (537) (593) (649) (38) (93) (149) (4) (26) 6 (315) 7 (371) Temperature F ( C) 8 (426) (482) (537) (593) (649) Titanium 6AL4V (38) (93) (149) (4) (26) 6 (315) 7 (371) Temperature F ( C) 8 (426) (482) (537) (593) (649) Tech-9 Page Tech EBCO Drive, Suite 1 Erie, PA 166 USA Ph: (814) Fax: (814) hq@butech-valve.com

8 Coefficient of flow (Cv) of a valve is the volume of water in U.S. gallons per minute at room temperature, which will flow through the valve with the stem fully open, with a pressure drop of 1 PSI across the valve. Cv is the valve sizing factor that permits selection of the appropriate valve to meet the flow requirements of a given fluid system. The Cv values shown on the technical page of the previous sections represent the full-open Cv for that particular valve. In determining estimated capacity, this Cv value should be used in the following formulas. Flow of Liquid in U.S. Gallons/min Flow of Liquid in lb/hr Flow of Gases in SCFH 1,2 FLOW FORMULAS Formula Nomenclature Cv = Valve coefficient of flow, full open P1 = Inlet pressure, psia (14.7+psig) P2 = Outlet pressure, psia (14.7+psig) Q = Flow, standard cubic feet per hour (SCFH) SG = Specific gravity of liquid SGF = Specific gravity of gas TF = Flowing temp R absolute (46+ F) TS = Superheat in F V = Flow, U.S. gallons per minute (GPM) W = Flow, pounds per hour (lb/hr) Specific Gravity (S G ) Sgf@RT Referred Liquid to Water Acetone.792 Alcohol.792 Benzine.92 Gasoline.751 Gasoline, nat..68 Kerosene.815 Pentane.624 Water 1 Flow of Gases in SCFH 2 (temperature corrected) Flow of Gases in lb/hr 2 Flow of Saturated Steam in lb/hr 2 Sg@RT Relative Gas to Air Acetylene.897 Air 1. Ammonia.587 Argon Butane 2.7 Carbon Dioxide Ethylene.967 Helium.137 Hydrogen.695 Methane.553 Nitrogen.966 Oxygen 1.3 Propane Sulphur Dioxide 2.8 Flow of Super Heated Steam in lb/hr 2 1. Effect of flowing temperatures of gas flow are minimal for temperatures between and 1 F (-1 to 65 C). Correction should be included if temperatures are higher or lower. 2. Where outlet pressure P2 is less than 1/2 inlet pressure P1, the term becomes.87 P1. Page Tech EBCO Drive, Suite 1 Erie, PA 166 USA Ph: (814) Fax: (814) hq@butech-valve.com Tech-9

9 PRESSURE DROP CURVES Theoretical Pressure Drop and Fluid Velocity vs Flow for BuTech Medium and High Pressure Tubing (based on water) To determine the expected pressure drop per foot of tube length: 1. Select the appropriate curves based on tube I.D. 2. Find system flow rate on X-axis and follow graph vertically until it reaches the solid line corresponding with the tube I.D. 3. Move horizontally in the chart to read the pressure drop per foot on the Y-axis. 4. Multiply this value by the total tube length to obtain total pressure loss. 5. Multiply value from step 4 by the compressibility correction factor from the chart at the right to correct for system pressure above atmospheric. To determine average fluid velocity, follow the same procedure except use the dashed line. System Pressure (KSI) Compressibility Correction Factor 'C' V e l o c i t y P S I D Flow Q (GPM) 2 V e l o c i t y P S I D Flow Q (GPM) V e l o c i t y P S I D Pressure drop Unit length P = psi/ft Flow Q (GPM) V e l o c i t y P S I D Flow Q (GPM) Velocity: V = ft/sec Tech-9 Page Tech EBCO Drive, Suite 1 Erie, PA 166 USA Ph: (814) Fax: (814) hq@butech-valve.com

10 PRESSURE VS BEND RADIUS Allowable Pressure vs Mandrel Radius A 6, PSI high pressure tubing 6, PSI Tubing O.D. I.D. Minimum Radius A 1/4".83" 1.25" (31.8 mm) B 3/8".125" 1.75" (44.5 mm) C 9/16".188" 2.625" (66.7 mm) B C MAWP (PSI x Room Temperature D E F G H J K L M N, PSI high pressure tubing, PSI high pressure tubing, PSI medium pressure tubing, PSI medium pressure tubing, PSI Tubing O.D. I.D. Minimum Radius D 9/16".2" 2.625" (66.7), PSI Tubing O.D. I.D. Minimum Radius E 1".438" 4.625" (117.5), PSI Tubing O.D. I.D. Minimum Radius F 1/4".9" 1.25" (31.8) G 3/8".3" 1.75" (44.5) H 9/16".312" 2.625" (66.7) J 3/4".438" 3." (88.9) K 1".562" 4.625" (117.5), PSI Tubing O.D. I.D. Minimum Radius L 9/16".359" 2.625" (66.7) M 3/4".516" 3." (88.9) N 1".688" 4.625" (117.5) Mandrel Radius (in.) Page Tech EBCO Drive, Suite 1 Erie, PA 166 USA Ph: (814) Fax: (814) hq@butech-valve.com Tech-9

11 CONVERSION TABLES PRESSURE To convert into Multiply by: atm bar kg/cm PSI MPa.1325 Pa 1325 bar atm kg/cm PSI 14.4 MPa.1 Pa, kg/cm2 atm bar.9867 PSI MPa.9867 Pa Mpa atm bar kg/cm PSI Pa 1,, Pa atm bar.1 kg/cm PSI.144 MPa.1 PSI atm.6846 bar kg/cm2.77 MPa Pa FLOW To convert into Multiply by: cc/min ft3/min gal/min.2642 in3/min.61 lit/min.1 ft3/min cc/min 28,3 gal/min 7.48 in3/min 28.8 lit/min gal/min cc/min 3,784.8 ft3/min.1337 in3/min 231 lit/min in3/min cc/min ft3/min.35 lit/min.16 gal/min.4 lit/min cc/min 1, ft3/min.3531 in3/min 61.2 gal/min LINEAR To convert into Multiply by: cm ft.3288 in.3937 meters.1 microns, mm ft cm.486 in 12 meters.48 microns 4,8 mm 4.86 in cm 2.5 ft.8333 meters.254 microns 25, mm 25.5 meters cm ft in microns 1,, mm 1, microns cm.1 ft in.3937 meters.1 mm.1 mm cm.1 ft.3281 in.3937 meters.1 microns AREA To convert into Multiply by: cm2 ft2.764 in2.155 m2.1 mm2. ft2 cm in2 144 m mm2 9,29 in2 cm ft m mm m2 cm2, ft in2 1,5 mm2 1,, mm2 cm2.1 ft2.764 in2.155 m2.1 VOLUME To convert into Multiply by: cc ft in3.62 liter.1 M3.1 quart.568 U.S. Gallon.2642 ft3 cc 28,317 in liter M quart U.S. Gallon in3 cc ft liter M quart.1732 U.S. Gallon.4329 liter cc.28 ft in M3.1 quart 1.57 U.S. Gallon.2642 M3 cc 1,, ft in3 61,23 liter 1, quart 56.8 U.S. Gallon quart cc ft in liter.9463 M U.S. Gallon.25 U.S. Gallon cc 3,785 ft in3 231 liter M quart 4 TEMPERATURE deg F = (deg C x 1.8) + 32 deg C = (deg F - 32) / 1.8 Tech-9 Page Tech EBCO Drive, Suite 1 Erie, PA 166 USA Ph: (814) Fax: (814) hq@butech-valve.com

12