North American 5643 Tip Emulsion Atomizers Instructions, Single Burner
Sheet 5643-4
P1
G
AIR
P2
P8
P6
P4
A
BURNER
E
C
J
K
Oil
5643 ATOMIZER
P9
P5
P7
P3
H
B
D
F K
Comp. Air or Steam
Installation. No air to oil ratio system is shown. Use a mass flow ratio controller or linked air-oil valves. Do not attempt to use a Ratiotrol. Use a 2-high linkage arrangement with separate connecting rods from G to C and D . D may operate through a smaller angle than C .
= Pressure gauge and shutoff valve (not required at each point) A = Oil differential pressure regulator B = Compressed air or steam regulator C = Adjustable port oil valve D = Adjustable port compressed air or steam valve
E = Sensitrol oil valve (for lighting burner) F = Compressed air or steam shutoff valve (wide open) G = Valve operator H = By-pass for steam purge of atomizer oil tube J = Oil shutoff valve K = 8558 Strainer
TYPICAL OPERATING PRESSURES in psi (kg/cm 2 )
P9
% Firing Rate
P2
P3
P4
P5
P6
P7
max.
min. typical†
15
100 (7) 100 (7) 45 (3.2) 75 (5.3) 35 (2.5) 35 (2.5) 40 (2.8) 30 (2.1) 35 (2.5) 100 (7) 100 (7) 56 (3.9) 75 (5.3) 46 (3.2) 45 (3.2) 70 (4.9) 40 (2.8) 45 (3.2) 100 (7) 100 (7) 68 (4.8) 75 (5.3) 58 (4.1) 55 (3.9) 70 (4.9) 40 (2.8) 55 (3.9) 100 (7) 100 (7) 80 (5.6) 75 (5.3) 70 (4.9) 65 (4.6) 70 (4.9) 40 (2.8) 65 (4.6)
35 70
100
The pressure at P8 must be slightly higher than that at P9 to obtain oil flow.
†"Maximum" and "minimum" figures represent pressure limits for stable operation of 6795 and 6820 Burners. To insure optimum flame geometry, design system to provide "maximum" pressure. P8 and P9 will vary with a given installation--"typical" figures are examples of pressures that might be encountered on a properly adjusted installation.
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