Sleeve valveS - Premier Valves

6premier sleeve valves5. Headloss CoeeficientsThe headloss coefficients (ξ) as applied in the head loss equation,2vH f= ξ ⋅ , are:2gValve opening2vHeadloss Coefficient H f= ( ξ) ⋅2gFlow Coefficient (Kd)10% 337 0.05520% 42 0.15530% 14 0.26540% 7.7 0.36050% 4.8 0.45560% 3.5 0.53570% 2.7 0.60680% 2.2 0.67590% 1.9 0.730100% 1.7 0.770These coefficients are applied to valves from ∅500 and up, for valves up to ∅500 increase thesecoefficients by 5%. See the attached reference list for valve sizes currently available.Note that we will design smaller valves if required.5. 6. GeneralContact Premier Valves for more information on our sleeve valves and other products such asring needle valves, butterfly valves, gate valves, non return valves and hydrants. Premier Valvescan assist in the selection and sizing of valves for all your water applications.Premier Valvesaddress: P.O.Box 11735randhart 1457Telephone: (011) 908-3760Facsimile: (011) 908-1268email:sales@premiervalves.co.zaWebsite:www.premiervalves.co.zaThe illustrations in this catalogue are subject to modifications without notice.premierP.O. Box 11735, Randhart, South Africa, 1457sales@premiervalves.co.zavalves (Pty) LtdT +2711-908-3760 F +2711-908-1268www.premiervalves.co.za