PRESSURE DROP Determine the oil pressure drop from the curves as indicated. For viscosities other than 50 sus at operating, multiply the actual indicated pressure drop (psi) for your GPM by the value in the pressure differential chart for your viscosity. AOM & AOMR S eries dimensions
SELECTION To select a model, locate the flow rate (GPM) through the cooler at the bottom of the flow vs Fs graph. Proceed upward until the GPM intersects with the calculated Fs. The curve closest above the intersection point will meet these conditions.
Return Line Fs = 1,388 GPM = 40 "return line flow" Model = AOM - 45
Case Line Fs = 1,214 GPM = 10 Model = AOM - 45
Examples:
GPM = 40
GPM = 10
Examples:
Indicated pressure drop Cp correction factor for ISO 32 oil @ 150°F
5 PSI
1 PSI
1.17
1.17
PERFORMANCE CALCULATION
OIL PRESSURE DROP (PSI) CODE
A = 1 PSI B = 2 PSI C = 3 PSI
J = 30 PSI
G = 15 PSI H = 20 PSI I = 25 PSI
D = 4 PSI E = 5 PSI F = 10 PSI
Horsepower to be removed (HP) x 2545 x Cv °F (Oil Leaving - Ambient Air Entering)
F s =
BTU hr °F =
Represents desired fluid leaving the cooler.
B A
H
By-Pass Relief Valve Flow direction
G*
F
C
D
1.5
0.5 Ø Mounting Holes 4 Places
E
AOM & AOMR DIMENSIONS & WEIGHTS
F E STANDARD DIMENSIONS ( inches ) D
Weight LBS
G AOM
10.06 12.06 16.06 22.06 28.06 34.06 40.38 40.38 G AOMR
H NPT
H SAE
C
Face Area
Model
A
B
.60 .81
20 25 35 40 45 55 65 75
6.00 8.00
1.00 1.00 1.00 1.00 1.25 1.25 1.25 1.25
14.50 14.50 14.50 20.50 19.50 19.50 25.00 35.50
3.50 5.50 9.50
8.62 10.62 14.62 20.62 26.56 32.56 38.31 38.31
16.72 16.72 16.72 22.72 21.72 21.72 27.22 37.72
18.22 18.22 18.22 24.22 23.22 23.22 28.72 39.22
19.72 19.72 19.72 25.72 24.72 24.72 30.22 40.72
AOM & AOMR-10-# AOM & AOMR-15-# AOM & AOMR-20-# AOM & AOMR-25-# AOM & AOMR-30-# AOM & AOMR-35-# AOM & AOMR-40-# AOM & AOMR-45-#
IN or OUT
IN or OUT
16 SAE 1-5/16-12 UN-2B
1.21 2.56 3.25 1.06 6.25 8.88
12.00 18.00 24.00 30.00 36.00 36.00
15.50 21.50 27.50 33.50 33.50
20 SAE 1-5/8-12 UN-2B
EXAMPLE OF A MODEL
IN or OUT
IN or OUT
OUT
AOM - 25 - N
Model
Connections N = NPT S = SAE
Size
AOMR - 25 - S - R - 65
Model
PSI Relief 30 = 30psi 65 = 65psi
Size
Connections Relief Valve
IN
N = NPT S = SAE
OUT
note: AIHTI reserves the right to make reasonable design changes without notice.
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tel: 434-757-1800 355 American Industrial Drive LaCrosse, VA 23950
email: sales@aihti.com fax: 434-757-1810
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