Product Overview | 1813 Oil Valves
Flow at #10 (wide open) position is about twice the #7 position capacity. Shutoff occurs between positions #1 and #2 (see Figure 1). To size Sensitrol for best control, determine oil flow rate required and available pressure drop. Using square root flow law, correct flow to 10 psi pressure drop. From Table above, select the valve with a capacity, at #7 position, closest to the corrected flow. Example: Select valve for 25 gph at 30 psi pressure drop (high fire).
1813 Sensitrol Oil Valves are precision built valves for manual or motorized control of oil flow to industrial burners.
1813 Sensitrols are manual valves used as limiting orifices in setting oil/air ratio. An additional shutoff valve in the line which permits shutting off the burner without disturbing the Sensitrol's ratio setting position is recommended. These valves have an adjustable detent mechanism that provides memory for desired valve operating position. A spring- loaded steel ball fits into a hollow in an adjustable collar, whose position is secured by a setscrew.
10 = 14.4 gph at 10 psi. √ 30
25 gph at 30 psi = 25 ×
The handle can be pushed past the detent position easily to open the valve wide temporarily for light-off or clean-out.
1813-02-B (17 gph at 10 psi) is closest size. Capacities are listed for 40 SSU #2 oil. They are somewhat less for higher viscosity oils but well within suitable ranges for oil burners (varying less than 10% from figures shown).
1813- -K Manual Sensitrols have cutdown handles to lessen chances of accidental changes in valve setting.
1813M Motorized Sensitrols , for automatic control of oil flow, are available with brackets and linkage for most standard control motors. Although these valves have ten dial positions, linkage geometry limits valve travel to seven positions (e.g., 0-7, 2-9, or 3-10).
100 90 80 70 60 50 40 30 20 10 0
CONSTRUCTION
1813-02 Valves have forged brass bodies, Viton U-cup, and precision ground, hardened stainless steel port seats. A V-port in the upper, rotating disc exposes varying areas of a circular port in the lower seat. The triangular opening is highly resistant to clogging or fouling. 1813-01 and 1813M-01 Valves have cast brass bodies and preci- sion ground, conical seats that form a clog-resistant triangular opening.
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Valve Setting
CAPACITY
Figure 1. Typical oil flow vs. valve handle position at constant pressure drop. This generalized curve will not predict exact flow rates so do not use chart to set burner ratios.
1813 Valves flow capacities at the No. 10 indicator position are listed in the chart below.
Sensitrol Valve Capacities at #10 Indicator Position 10 psi Pressure Drop
Valve Size Designation
-02-0 -02-A -02-B -02-C -02-D -01
gph #2 Oil (40 SSU) at 10 psi P Cv Rating
3
8
17
33
55
140
Figure 2 . 1813M Motorized Sensitrol TM (left) with optional motor; 1813 Sensitrol (top right); 1813- -K Sensitrol (bottom right) with cutdown handle. Maximum inlet pressure is 250 psi for 1813-02; 100 psi for 1813-01. Maximum temperature is 300°F for all sizes.
0.030 0.078 0.17 0.32 0.52 1.32
Dial Color
Black Red Blue Green Brown White
Bulletin 1813 Page 2
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