7.6 PRESSURE DROP PER FOOT TABLESWARDFlex®/WARDFlex®MAX Pressure Drop per Foot

TABLE A-28

Pressure drop in inches of water column per foot (“WC per foot) at given CFH Flow based on natural gas specific gravity of 0.60

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WARDFlex®/WARDFlex®MAX Pressure Drop per Foot

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TABLE A-28

Pressure drop in inches of water column per foot (“WC per foot) at given CFH Flow based on natural gas specific gravity of 0.60

SCHEDULE 40 BLACK IRON PIPE PRESSURE DROP PER FOOT

TABLE A-29

Pressure drop in inches of water column per foot (“WC per foot) at given CFH Flow based on natural gas specific gravity of 0.60

Calculations based on NFPA 54 Low-Pressure Gas Formula

76

SCHEDULE 40 BLACK IRON PIPE PRESSURE DROP PER FOOT

TABLE A-29

Pressure drop in inches of water column per foot (“WC per foot) at given CFH Flow based on natural gas specific gravity of 0.60

Calculations based on NFPA 54 Low-Pressure Gas Formula

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POLYETHYLENE PIPE PRESSURE DROP PER FOOT

TABLE A-30

Pressure drop in inches of water column per foot (“WC per foot) at given CFH Flow based on natural gas specific gravity of 0.60

Calculations based on NFPA 54 Low-Pressure Gas Formula

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POLYETHYLENE PIPE PRESSURE DROP PER FOOT

TABLE A-30

Pressure drop in inches of water column per foot (“WC per foot) at given CFH Flow based on natural gas specific gravity of 0.60

Calculations based on NFPA 54 Low-Pressure Gas Formula

79

WARDFlex®/WARDFlex®MAX Pressure Drop per Foot Propane Gas

TABLE A-31

Pressure drop in inches of water column per foot (“WC per foot) at given KBTU based on propane gas specific gravity of 1.52

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WARDFlex®/WARDFlex®MAX Pressure Drop per Foot Propane Gas

TABLE A-31

Pressure drop in inches of water column per foot (“WC per foot) at given KBTU based on propane gas specific gravity of 1.52

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SCHEDULE 40 BLACK IRON PIPE Pressure Drop per Foot Propane Gas

TABLE A-32

Pressure drop in inches of water column per foot (“WC per foot) at given KBTU based on propane gas specific gravity of 1.52

Calculations based on NFPA 54 Low Pressure Gas Formula

82

SCHEDULE 40 BLACK IRON PIPE Pressure Drop per Foot Propane Gas

TABLE A-32

Pressure drop in inches of water column per foot (“WC per foot) at given KBTU based on propane gas specific gravity of 1.52

Calculations based on NFPA 54 Low Pressure Gas Formula

83