Duct Fitting Loss Coefficients
Loss coefficients (C-values) for duct fittings — elbows, tees, transitions, entries and exits per ASHRAE Fundamentals and SMACNA. dP = C * Vp where Vp is velocity pressure.
Attributes
C0dimensionless
applicable_diameter_inin
geometry_notes
Browse data
damper_butterfly_50pct_open1 rowdamper_butterfly_fully_open1 rowelbow_45_smooth_r1.01 rowelbow_45_smooth_r1.51 rowelbow_90_mitered_double_vane1 rowelbow_90_mitered_single_vane1 rowelbow_90_mitered_unvaned1 rowelbow_90_rect_smooth_r1.01 rowelbow_90_rect_smooth_r1.51 rowelbow_90_smooth_r0.751 rowelbow_90_smooth_r1.01 rowelbow_90_smooth_r1.51 rowentry_duct_bellmouth1 rowentry_duct_flanged1 rowentry_duct_flush1 rowexit_duct_abrupt1 rowexit_duct_with_diffuser1 rowflex_duct_90deg_bend1 rowflex_duct_connector_extended1 rowtee_branch_451 rowtee_branch_901 rowtee_main_straight1 rowtransition_abrupt_contraction1 rowtransition_abrupt_expansion1 rowtransition_contraction_gradual1 rowtransition_symmetric_15deg1 rowtransition_symmetric_30deg1 rowtransition_symmetric_7deg1 rowwye_45_equal1 row
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