Registered Quality System to ISO 9001:2008
18/60
Form 912
sorinc.com
913-888-2630
Select the internal trim material from the chart below.
108 A-E1A-F-A1-N4-CRTT
Step 4: Trim Material
The 108/208 Series mechanical level switches are float operated, horizontal mounted with sealed,
tamper-proof or flanged, serviceable chambers. 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. See page 52 for pressure ratings at higher temperatures.
Minimum Specific Gravity
For all model series on this page, single switch only is equal to .65.
Consult the factory for units used with specific gravity lower than .65.
Select a process connection style and size from the chart
below. Consult the factory for variations. NPT connections
not recommended above 900°F.
108 A-E1A-F-A1-N4-CRTT
Step 1: Model Series
108 A-E1A-F-A1-N4-CRTT
Step 3: Process Connection
108/208 Series
Model
Series
Chamber
Material
Pressure at Listed Temperature in psid (bar)
100°F (38 C) 200°F (93°C) 300°F
(149°C)
350°F (177°C) 400°F (204°C) 450°F (232°C)
108
A106B
316SS
740
720
(51.0)
(49.6)
675
620
(46.5)
(42.7)
655
560
(45.1)
(38.6)
645
537
(44.4)
(37.0)
635
515
(43.7)
(35.5)
622
497
(42.8)
(34.2)
208
A106B
316SS
1794
2248
(123.6)
(155.0)
1794
1937
(123.6)
(133.5)
1794
1746
(123.6)
(120.3)
1794
1644
(123.6)
(133.4)
1794
1602
(128.0)
(110.4)
1794
1548
(128.0)
(106.7)
Select chamber material from the following chart. Maximum working pressure in the chart above is
based on the material selected here. Consult the factory for alternative materials.
108 A-E1A-F-A1-N4-CRTT
Step 2: Chamber Material
Designator Material
A A106 Grade B Carbon Steel with A105 and A234-WPB fittings
C A312-TP316/316L Stainless Steel with A182-316/316L and A403-316/316L fittings
Designator Float Material Attraction Sleeve
Available with
Chamber Material:
F 321 Stainless Steel 400 Stainless Steel A106 Carbon Steel (A) only
G 321 Stainless Steel 316/316L Stainless Steel
A106 Carbon Steel (A) or
316/316L Stainless Steel (C)
Size Style NPT Thread
E1A
1”
NPT
E1B SW
E5A
1-1/2”
NPT
E5B SW
E2A
2”
NPT
E2B SW
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