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WETTED MATERIALS CHART
Model
Brass Bronze Ceramic Polypropylene 301 SS 303 SS 304 SS
B-S-3-A
X
X
B-S-3-B
X
X
X
B-S-3-C
X
X
B-S-3-H
X
X
X
B-S-3-O
X
X
S-S-3-A
X
S-S-3-C
X
S-S-3-L
X
S-S-3-O
X
S-S-3-S
X
Note: ATEX, IECEx and KC units only: The temperature class is determined by the
maximum ambient and or process temperature. Units are intended to be used in
ambient of -20°C≤ Tamb ≤75°C. Units may be used in process temperatures up to
105°C providing the enclosure and switch body temperatures do not exceed 75°C.
The standard Temperature Class is T6 Process Temp ≤75°C.
DIMENSIONS
Model L6 FLOTECT
Float Switch
®
Ø1 [25.40]
1 MALE NPT
3/4
[19.05]
1-3/4 [44.45]
Polypropylene float
Ø1 [25.40] x 2 [50.80]
LONG FLOAT
1 MALE NPT
1-1/16
[26.99]
2-7/8 [73.03]
Cylindrical stainless steel float
SPDT
Terminal connections CSA, IECEx, ATEX enclosures
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
3/4 MALE NPT
CONDUIT
CONNECTION
Ø1-1/16 [26.99]
6 [152.40]
3/4 MALE
NPT CONDUIT
CONNECTION
Ø1-1/16 [26.99]
6-1/2 [165.10]
DPDT
Refer to Certificate No: IECEx DEK 11.0039 for conditions of safe use for IECEx
compliant units.
All wiring, conduit and enclosures must meet applicable codes for hazardous areas.
X
Conduits and enclosures must be properly sealed. For outdoor or other locations
X
where temperatures vary widely, precautions should be taken to prevent condensation
inside switch or enclosure. Electrical components must be kept dry at all times.
X
To prevent ignition of hazardous atmospheres, disconnect the
CAUTION
X
device from the supply circuit before opening. Keep assembly
X
tightly closed when in use.
MAINTENANCE
Inspect and clean wetted parts at regular intervals. The cover should be in place at all
times to protect, the internal components from dirt, dust and weather and to maintain
hazardous location ratings. Disconnect device from the supply circuit before opening
to prevent ignition of hazardous atmosphere. Repairs to be conducted by Dwyer
Instruments, Inc. Units in need of repair should be returned to the factory prepaid.
Ø1
[Ø25.40]
FLOAT
1-27/32
[46.83]
1 FEMALE NPT TYP 2 PLACES
3-5/64
[78.18]
1-9/64
[28.97]
2 [50.80] HEX
3-1/2 [88.90]
4-3/8 [111.13]
1 MALE NPT
1-1/16
[26.99]
6-1/2 [165.10]
Round stainless steel float
8-9/16 [217.49]
With external chamber (tee)
3/4 FEMALE NPT CONDUIT
CONNECTION TYP 2 PLACES
Ø3-11/32
[84.93]
4-1/4 [107.95]
CLEARANCE FOR
COVER REMOVAL
CSA, IECEx, ATEX conduit enclosure
3/4 MALE
NPT CONDUIT
CONNECTION
Ø1-1/16 [Ø26.99]
3/4 MALE NPT
CONDUIT
CONNECTION
Ø1-1/16 [26.99]
Ø3-3/8
[85.73]
25/32
[19.86]
2-15/16
[74.63]
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