Valve Selection Handbook - For engineers involved with fluid flow processes, here is a basic guide showing the engineering criteria for selecting valves. The book discusses engineering fundamentals related to valves and deals with the factors on which selection should be made. Purchase Valve Selection Handbook - 5th Edition. Print Book & E-Book. ISBN 172, 586.
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Calculation Summary Document ID
705 - XXX - XXX SF-EG301-002E Client Reference # Page Prepared By: ANISH CHANDRAN 1 of 2 Date: 3-Feb-11 (Print & Sign) Reviewed By: Date: (Print & Sign) Approved By: Date: (Print & Sign) Note: Approval sign off requirement determined by Project Engineer and/or Project Manager. Calculation Title: Summary: VALVE SIZING CALCULATION (For Estimation) For WATER with inlet pressure of 314.7 psia and outlet pressure of 289.7 psia, and pipe line size of 8 inch, selected a valve of nominal diameter 4 inch. The valve has a CV value of 124 and a percentage opening of 70 degrees. NO CHOCKING PHENOMENON observed. SF-EG301-002E Calculation Summary EXCEL Jan 2011 Calculation Summary Document ID 705 - XXX - XXX SF-EG301-002E Client Reference # Page PURPOSE: METHOD OF ANALYSIS: COMPUTER CODE USED: NOMENCLATURE: REQUIREMENTS/COMMENTS: DATA: ASSUMPTIONS: LEVEL OF ACCURACY: SKETCH: ANALYSIS: RESULTS: CONCLUSIONS/RECOMMENDATIONS: APPENDIX: SF-EG301-002E Calculation Summary EXCEL 2 of 2 CONTROL VALVE SIZING (for estimation) EXCEL SHEET NA NA NA NA FOR A SINGLE PHASE FLOW (BASED ON FISCHER CONTROL VALVE HANDBOOK) FOR ESTIMATION PURPOSE NA BASED ON FISCHER CONTROL VALVE HANDBOOK Ref SUMMARY Ref SUMMARY NA Jan 2011 Calculation Worksheet Document ID 705 - XXX - XXX Client Reference # TITLE: SCREW FEEDER CALCULATIONS (Example) 3-Feb-11 PREPARED BY: ANISH DATE: REVIEWED BY: (Print & Sign) (Print & Sign) SF-EG301-001G TORONTO OFFICE SHEET: DATE: PURPOSE : To SIZE AND SELECT VALVES FOR SINGLE PHASE FLOW REQUIREMENTS : To SIZE VALVES FOR VALVE SIZE EQUAL TO OR GREATERT THAN LINE SIZE & WITH SINGLE PHASE FLOW DATA : Media Valve size Pipe size Inlet Pressure WATER 4 8 d D P1 inch inch psia Outlet Pressure Discharge Minimum flow discharge P2 psia 289.7 Q min gpm 200 Operating flow discharge Q operating gpm 650 Design flow discharge Temperature Specific Gravity of fluid Q design gpm °F 800 T Gf 314.7 70 0.5 Absolute Vapour pressure of fluid (at inlet temperature) Pv psia 124.3 Absolute Critical pressure of fluid (at inlet temperature) Pc psia 616.3 Recovery factor (from page 5 - 195 of catalogue) FL 0.82 Cv 224 CV of the proposed valve at 100% opening (from page 5 - 195 of catalogue) NOTE Catalogue refers to FISCHER - ROSEMOUNT catalogue for easy - e valves Valve model selected is ED ; EQUAL PERCENTAGE (Ref Page : 5- 186) Valve has diameter of DN 100 (4'), Class #300, with shut off class II. Used for general process application with balanced trim and can withstand a temperature of upto 420° C (800 F) SF-EG301-001E Calculation Worksheet EXCEL 3 of 10 Jan 2011 Calculation Worksheet Document ID 705 - XXX - XXX Client Reference # TITLE: SCREW FEEDER CALCULATIONS (Example) 3-Feb-11 PREPARED BY: ANISH DATE: REVIEWED BY: (Print & Sign) (Print & Sign) SF-EG301-001G TORONTO OFFICE SHEET: DATE: ANALYSIS : Cumulative resistance coefficients ΣK = 1.5 x ( 1 - (d2 / D2) )2 Pipe geometry factor Fp = * 1 + ( (ΣK / 890) x (CV /d2) 2 ] -0.5 Calculated Valve sizing coefficient Cv = q / FP * √ (P1 -P2) / Gf OUTPUT Differential pressure Cumulative resistance coefficients ∆P ΣK ΣK = 1.5 x ( 1 - (d2 / D2) )2 ΣK 2 2 ) ] -0.5 0.8438 0.9183 CV Calculated Valve sizing coefficient Cv = 25 Fp Pipe geometry factor Fp = [ 1 + ( (ΣK / 890) x (CV /d psia q / FP * √ (P1 -P2) / Gf 124 70 Valve percentage opening NO CHOCKING PHENOMENON CHECK VALVE SIZE !!! SELECTED A VALVE OF SIZE 4 inch AND WITH A PERCENTAGE OPENING OF 70 DEGREES. SF-EG301-001E Calculation Worksheet EXCEL 4 of 10 Jan 2011 Calculation Worksheet Document ID 705 - XXX - XXX SF-EG301-001G TORONTO OFFICE Client Reference # TITLE: SCREW FEEDER CALCULATIONS (Example) 3-Feb-11 PREPARED BY: ANISH DATE: REVIEWED BY: SHEET: (Print & Sign) (Print & Sign) DATE: PERCENTAGE VALVE OPENING CALCULATOR Take values from manufacturer's catalogue (enter here) Calculated CV value 124 CV value just preceeding calculated CV value 18.3 % valve opening corrosponding to that value 30 CV value just succeeding calculated CV value 125 % valve opening corrosponding to that value 70 Percentage Valve opening corrosponding to calculated CV SELECTED % OPENING 69.6251 70 CROSS CHECKING VALVE SELECTION USING GAIN ACROSS APPLICABLE FLOW RATES (Enter the calculated % stroke for each case using the calculator sheet ) Flow Type Flow (gpm) CV % values Stroke SF-EG301-001E Calculation Worksheet EXCEL Change in Flow (gpm) 5 of 10 Change in Stroke % GAIN Jan 2011 SF-EG301-001G TORONTO OFFICE OF ES FOR SINGLE PHASE FLOW E SIZE EQUAL TO OR GREATERT THAN LINE SIZE W SF-EG301-001E Calculation Worksheet EXCEL 6 of 10 Jan 2011 SF-EG301-001G TORONTO OFFICE OF SF-EG301-001E Calculation Worksheet EXCEL 7 of 10 Jan 2011 SF-EG301-001G TORONTO OFFICE OF SF-EG301-001E Calculation Worksheet EXCEL 8 of 10 Jan 2011 CONTROL VALVE HAND BOOK FOR SIZING PLEASE CLICK ON THE ICONS ABOVE AND WAIT A LITTLE FISCHER CATALOGUE ATALOGUE Comments are closed.
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