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STEAM CONNECTION
An adequate amount of steam must be delivered to the steamer to assure consistent steam cooking.
Where possible, supply the steamer with a separate line from the steam source. If the steamer must
be supplied from a line supplying other appliances, the pipe sizes and pressure must be verified.
REQUIRED STEAM INPUT
Allow for elbows, pipe length and valves when calculating pressure loss (see example below).
Supply only clean, dry steam to the steamer. Water can condense in the supply line during idle periods,
which will impede the flow of steam. The steam supply line should be level or run slightly downward
toward the steamer, and a Ball Float Trap should be installed near the steamer to drain out condensed
steam from the supply line (Fig. 1).
Fig. 1
STEAM LINE—PRESSURE LOSS EQUIVALENTS
Example: A supply line with 1" diameter pipe has a total of 50' of pipe, three elbows and one globe valve.
The total equivalent length = 50' + 3 x 2.2' + 23' = 79.6'. Multiply times the loss rate of 1 psi/10' yields
a pressure loss of about 8 psi. Therefore, 40 psi at the source would deliver 32 psi at the steamer.
If the supply line were
3
/4" diameter pipe, the total equivalent length = 50' + 3 x 1.8' + 18' = 73.4'. Multiply
times the loss rate of 1 psi / 7.5 feet yields a pressure loss of about 10 psi. Therefore, 40 psi at the source
would deliver 30 psi at the steamer.
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