HOW TO DETERMINE THE INTERNAL DIAMETER (I.D.) OF HOSES.

Chart indicating flow rate and velocity from which to determine nominal size

A

Maximum recommended suction line velocity

B

Maximum recommended return line velocity

C

Maximum recommended delivery line velocity

How to determine the internal diameter (I.D.) of hoses
	Delivery (l/min)
	Flow velocity (m/sec)
	ND (mm)

EXAMPLE:
given a flow rate of P= 60 l/min and a
velocity V= 5 m/sec the nominal size
will be I.D.: DN= 16.
Resistances to flow are not considered.

delivery (l/min)	P = 60
flow velocity (m/sec)	V = 5
NOMINAL DIAMETER (mm)	DN = 16