Natural Gas Copper pipe sizing Calculator   gas type 
  pipe type        
  Alter the figures in the yellow boxes    
PIPE FITTINGS TABLE.png,get-attachment
PIPE FITTINGS TABLE.png
                     
                                     
  KW net / Gross / M3/Hr     Number             Pipe Size
 
  kWgross kW 45 Form Bends   m                  
  kWnett kW 90 Form Bends   m       Gas Rate m3/hr
  m3/hr m3/hr 90 elbows   m                  
  kWgross   tee flow entering branch   m       Length m
  kWnet   tee flow exiting branch   m                  
  M3/hr   Actual Pipe Length   m Total Length Pressure Drop mb
                                     
  PRESSURE LOSS FROM THE METER TO THE APPLIANCES MUST BE CALCULATED TO CONFIRM IF IT IS WITHIN THE ALLOWABLE PRESSURE DROPS 1MB FOR NATURAL GAS / 2MB FOR PROAPANE AND BUTANE. FILL IN THE WORK OUT SHEET FOR EACH SECTION OF PIPEWORK. THEN ADD THE PRESSURE DROPS FROM THE METER TO THE APPLAINCE.
         
  PRESSURE LOSS FROM THE METER TO THE APPLIANCES MUST BE CALCULATED TO CONFIRM IF IT IS WITHIN THE ALLOWABLE PRESSURE DROPS 1MB FOR NATURAL GAS / 2MB FOR L.P.G.  
  STEP1. Appliances Maximum Heat input kw net Maximum Gas Rate   STEP 4. Add the pipework section pressure drops from the meter to each applaince TOTAL PRESSURE DROP MB SATISFACTORY?  
                       
                       
                       
                       
  STEP 2. SKETCH THE PIPE WORK LAYOUT INDICATING PIPE LENGTHS AND LABELS I.E. A-B, B-C,        
  STEP 3. PIPEWORK SECTION MAXIMUM HEAT INPUT NET MAXIMUM FLOW RATE ESTIMATED PIPE SIZE PIPE LENGTH FITTINGS EQIVILENT LENGTH TOTAL EQUIVILENT LENGTH PRESSURE LOSS / METRE PRESSURE LOSS        
  YOUR LABEL COLUMN A FROM THE TABLES COLUMN A FROM THE TABLES MM METRES TYPE METRES FROM TABLE B ADD PIPE LENGTH AND FITTINGS LENGTH MBAR/M FROM TABLE A MULTIPLY EQUIVILENT LENGTH BY PRESSURE LOSS        
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