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Fitting Loss Coefficients

Fitting Loss Coefficients

Lookup resistance-coefficient references for valves, elbows, bends, checks, entrances and exits without performing a pressure-drop calculation.

Quick coefficient profile

Look up a single fitting's resistance coefficient and basis.

Classification

ValvesC × fTVerified

Relative resistance within C × fT

C = 8

lower losshigher loss

Coefficient

C = 8

K = C · fT

Size range

All

Nominal (in)

Source

A-28

Crane TP-410

Method
Component group

Crane TP-410 resistance coefficients

Showing 65 of 65 references

Crane TP-410 fitting and valve resistance coefficient references
MethodSize rangeSource pageStatus
90° pipe bend, r/d=1Elbows & BendsC × fTC = 20—A-28 to A-30Verified
90° pipe bend, r/d=1.5Elbows & BendsC × fTC = 14—A-28 to A-30Verified
90° pipe bend, r/d=10Elbows & BendsC × fTC = 30—A-28 to A-30Verified
90° pipe bend, r/d=12Elbows & BendsC × fTC = 34—A-28 to A-30Verified
90° pipe bend, r/d=14Elbows & BendsC × fTC = 38—A-28 to A-30Verified
90° pipe bend, r/d=16Elbows & BendsC × fTC = 42—A-28 to A-30Verified
90° pipe bend, r/d=2Elbows & BendsC × fTC = 12—A-28 to A-30Verified
90° pipe bend, r/d=20Elbows & BendsC × fTC = 50—A-28 to A-30Verified
90° pipe bend, r/d=3Elbows & BendsC × fTC = 12—A-28 to A-30Verified
90° pipe bend, r/d=4Elbows & BendsC × fTC = 14—A-28 to A-30Verified
90° pipe bend, r/d=6Elbows & BendsC × fTC = 17—A-28 to A-30Verified
90° pipe bend, r/d=8Elbows & BendsC × fTC = 24—A-28 to A-30Verified
Angle valve, 45 degree full line sizeValvesC × fTC = 55—A-28Verified
Angle valve, 90 degree full line sizeValvesC × fTC = 150—A-28Verified
Ball valve, full bore, full openValvesC × fTC = 3—A-29Verified
Butterfly valve, centric, 10-14 inchValvesC × fTC = 3510–14 inA-28 to A-30Verified
Butterfly valve, centric, 16-24 inchValvesC × fTC = 2516–24 inA-28 to A-30Verified
Butterfly valve, centric, 2-8 inchValvesC × fTC = 452–8 inA-28 to A-30Verified
Butterfly valve, double offset, 10-14 inchValvesC × fTC = 5210–14 inA-28 to A-30Verified
Butterfly valve, double offset, 16-24 inchValvesC × fTC = 4316–24 inA-28 to A-30Verified
Butterfly valve, double offset, 2-8 inchValvesC × fTC = 742–8 inA-28 to A-30Verified
Butterfly valve, triple offset, 10-14 inchValvesC × fTC = 9610–14 inA-28 to A-30Verified
Butterfly valve, triple offset, 16-24 inchValvesC × fTC = 5516–24 inA-28 to A-30Verified
Butterfly valve, triple offset, 2-8 inchValvesC × fTC = 2182–8 inA-28 to A-30Verified
Close-pattern return bend, 180 degreeElbows & BendsC × fTC = 50—A-30Verified
Diaphragm valve, straight-throughValvesC × fTC = 39—A-29Verified
Diaphragm valve, weir typeValvesC × fTC = 149—A-29Verified
Foot valve with strainer, hinged discChecksC × fTC = 75—A-29Verified
Foot valve with strainer, poppet discChecksC × fTC = 420—A-29Verified
Gate valve, 1/2 openValvesC × fTC = 160—Derived setVerified
Gate valve, 1/4 openValvesC × fTC = 900—Derived setVerified
Gate valve, 3/4 openValvesC × fTC = 35—Derived setVerified
Gate valve, full openValvesC × fTC = 8—A-28Verified
Globe valve, full openValvesC × fTC = 340—A-28Verified
Lift check valve, globe patternChecksC × fTC = 600—A-28Verified
Lift check valve, Y-patternChecksC × fTC = 55—A-28Verified
Miter bend, α=0°Elbows & BendsC × fTC = 2—A-28 to A-30Verified
Miter bend, α=15°Elbows & BendsC × fTC = 4—A-28 to A-30Verified
Miter bend, α=30°Elbows & BendsC × fTC = 8—A-28 to A-30Verified
Miter bend, α=45°Elbows & BendsC × fTC = 15—A-28 to A-30Verified
Miter bend, α=60°Elbows & BendsC × fTC = 25—A-28 to A-30Verified
Miter bend, α=75°Elbows & BendsC × fTC = 40—A-28 to A-30Verified
Miter bend, α=90°Elbows & BendsC × fTC = 60—A-28 to A-30Verified
Pipe entrance, inward projectingEntrances & ExitsFixed KK = 0.78—A-30Verified
Pipe entrance, rounded (by r/d)Entrances & ExitsK by r/d tableSee r/d table—A-30Verified
Pipe entrance, sharp-edgedEntrances & ExitsFixed KK = 0.5—A-30Verified
Pipe exit, projecting/sharp-edged/roundedEntrances & ExitsFixed KK = 1—A-30Verified
Plug valve/cock, 3-way, branch flowValvesC × fTC = 90—A-30Verified
Plug valve/cock, 3-way, flow throughValvesC × fTC = 30—A-30Verified
Plug valve/cock, straightwayValvesC × fTC = 18—A-30Verified
Standard elbow, 45 degreeElbows & BendsC × fTC = 16—A-30Verified
Standard elbow, 90 degreeElbows & BendsC × fTC = 30—A-30Verified
Stop-check valve, angle typeChecksC × fTC = 200—A-28 to A-30Verified
Stop-check valve, globe typeChecksC × fTC = 400—A-28 to A-30Verified
Stop-check valve, Y-pattern angle typeChecksC × fTC = 350—A-28 to A-30Verified
Stop-check valve, Y-pattern globe typeChecksC × fTC = 300—A-28 to A-30Verified
Swing check valve, clearwayChecksC × fTC = 50—A-28Verified
Swing check valve, conventionalChecksC × fTC = 100—A-28Verified
Tilting-disc check, α=15°, 10–14 inChecksC × fTC = 9010–14 inA-28 to A-30Verified
Tilting-disc check, α=15°, 16–48 inChecksC × fTC = 6016–48 inA-28 to A-30Verified
Tilting-disc check, α=15°, 2–8 inChecksC × fTC = 1202–8 inA-28 to A-30Verified
Tilting-disc check, α=5°, 10–14 inChecksC × fTC = 3010–14 inA-28 to A-30Verified
Tilting-disc check, α=5°, 16–48 inChecksC × fTC = 2016–48 inA-28 to A-30Verified
Tilting-disc check, α=5°, 2–8 inChecksC × fTC = 402–8 inA-28 to A-30Verified
Y-pattern angle/globe style valve, full openValvesC × fTC = 55—A-28Verified