Inch and Metric Size,
Plastic Fluid Level Sight Glasses

EN 541
wo
Elesa Model HFTX

RoHS Compliant
 

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Specification
Information
Housing: Special transparent polyamide technopolymer plastic 
Reflector: Star-shaped anodized aluminum with central level sight dot 
Packing ring: NBR synthetic rubber

Shipping

Elesa® original design technopolymer plastic fluid level sight glasses.
Resistant to solvents, oils, grease and other chemical agents.
The particular shape of the lenticular window increases and improves visibility even from side positions.
A moderate torque (see table) is recommended when tightening oil level indicator so as to guarantee optimal tightness without any elastic deformation.
BSPP thread sizes available upon request.
Maximum continuous working temperature at 3 Bar pressure: 210°F (100°C).

See our Technical Section for pipe thread size details and pressure ratings.
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 Metric Threads

Dimensions in:

millimeters
(inches)
Part Number
d1
Thread
A
B
D
d
S
Tightening
Torque
ft. lb.
Weight
oz.
M16 x 1.5
8
(.31)
7
(.28)
22
(.87)
11
(.43)
19
(.75)

2-3
.14
M20 x 1.5
9.5
(.37)
8
(.31)
26
(1.02)
14
(.55)
22
(.87)

8-10
.18
M25 x 1.5
8
(.31)
9
(.35)
31.5
(1.24)
18
(.71)
27
(1.06)

8-10
.28
M27 x 1.5
9
(.35)
9
(.35)
31.5
(1.24)
20
(.79)
27
(1.06)

8-10
.28
M26 x 1.5
13
(.51)
9
(.35)
31.5
(1.24)
18
(.71)
27
(1.06)

8-10
.28
M30 x 1.5
9
(.35)
10
(.39)
35
(1.38)
22
(.87)
30
(1.18)

8-10
.35
M35 x 1.5
11
(.43)
10
(.39)
40
(1.57)
25
(.98)
34
(1.34)
12-15
.46
M40 x 1.5
12
(.47)
13
(.51)
47
(1.85)
30
(1.18)
41
(1.61)
8-10
.70
 
 SAE Threads

Dimensions in:

inches
(millimeters)
Part Number
d1
Thread
A
B
D
d
S
Weight
oz.
3/4-16 UNF-2A
.59
(15)
.31
(8)
1.02
(26)
.51
(13)
.86
(22)
.18
1 1/6-12 UNF-2A
.59
(15)
.39
(10)
1.38
(35)
.75
(19)
1.18
(30)
.50