Registered Quality System to ISO 9001:2008
33/60
Form 912
sorinc.com
913-888-2630
Step 1: Model Series
702 A-F7A-B-A1-N4-CRTT
The 700 Series mechanical level switches are single-stage, displacer-operated switches suitable
for top-insertion tank mounting. Select the sensing unit from the following charts. Then refer to
pages 44 - 50 for switching elements, housings and accessories.
Select a model series from the charts below based on maximum operating pressure and minimum
specific gravity. Minimum specific gravity is based on single switch. Anti-vibration and pneumatic
switches have higher minimum specific gravities.
Maximum Working Pressure
Displacer units are not available over 450°F (232°C).
Step 2: Process Connection Material
702 A -F7A-B-A1-N4-CRTT
Select a process connection material from the chart below. Maximum working pressure in the chart
above is based on the material selected here. Consult the factory for alternative materials.
700 Series
Designator Material
A A105 Carbon Steel fittings or flanges
C A182-TP316/316L Stainless Steel fittings or flanges
Model
Series
Minimum
Specific
Gravity
Function
Connection
Style
Displacer
Material
Connection
Material
Pressure Rating - psig (bar)
100°F (38°C) 450°F (232°C)
701 0.51
Narrow
Differential
NPT
Porcelain All 1000 (69) 750 (52)
702 0.45 SS All 1000 (69) 750 (52)
703 0.51 Flange Porcelain
A105 285 (20) 185 (13)
316SS 275 (19) 182 (13)
704 0.45 Flange SS
A105 285 (20) 185 (13)
316SS 275 (19) 182 (13)
705
0.50
Wide
Differential
NPT
Porcelain All 1000 (69) 750 (52)
706 SS All 1000 (69) 750 (52)
707 Flange Porcelain
A105 285 (20) 185 (13)
316SS 275 (20) 182 (13)
708 Flange SS
A105 285 (20) 185 (13)
316SS 275 (19) 182 (13)
*An operating specific gravity is required for models 705 through 708 at time of order.