Fluid Sight Glasses GN 744

Type: A - With prismatic effect (only d₁ = 14 / 18 / 24 mm)

Product description

Fluid sight glasses GN 744 in type A use the prismatic effect of a cat’s eye to give a clear indication of the fluid level unaffected by fluid color or fluid viscosity. The advantage of this effect is particularly obvious in the case of underfilling or overfilling and for inspection under unfavorable light conditions.

The seal is embedded in a radial recess, and thus cannot be lost or squeezed out during tightening.

These fluid sight glasses can also be used on pressurized tanks. Tests regarding maximum pressure are available.

Specification

Body
Aluminum
Fine turned

Sight glass
Plastic, Polyamide (PA-T)
Crystal clear

Marking ring for type C
Red, pad printing

Seal / O-Ring
Acrylonitrile-butadiene rubber (NBR)

Operating temperature up to 212 °F (100 °C)

RoHS

Accessory

Thin Hex Nuts GN 7430
Weld Bushings GN 7490 (Steel)

On request

EPDM seals

Part Number	d₁	d₂ Pipe thread	Fine thread	d₃	l₁	l₂	s

744-7-G1/4-B	0.28	G 1/4	-	0.79	0.30	0.26	0.71
744-7-M12X1.5-B	0.28	-	M 12 x 1.5	0.79	0.30	0.26	0.71
744-11-G3/8-B	0.43	G 3/8	-	0.87	0.31	0.30	0.79
744-11-M16X1.5-B	0.43	-	M 16 x 1.5	0.87	0.31	0.30	0.79
744-14-G1/2-B	0.55	G 1/2	-	1.02	0.33	0.30	0.91
744-14-M20X1.5-B	0.55	-	M 20 x 1.5	1.02	0.33	0.30	0.91
744-18-G3/4-B	0.71	G 3/4	-	1.26	0.35	0.31	1.18
744-18-M26X1.5-B	0.71	-	M 26 x 1.5	1.26	0.35	0.31	1.18
744-18-M27X1.5-B	0.71	-	M 27 x 1.5	1.26	0.35	0.31	1.18
744-24-G1-B	0.94	G 1	-	1.57	0.43	0.33	1.42
744-24-M33X1.5-B	0.94	-	M 33 x 1.5	1.57	0.43	0.33	1.42

Part Number

d₁

d₂
Pipe thread

Fine thread

d₃

l₁

l₂

744-7-G1/4-B

0.28

G 1/4

0.79

0.30

0.26

0.71

744-7-M12X1.5-B

0.28

M 12 x 1.5

0.79

0.30

0.26

0.71

744-11-G3/8-B

0.43

G 3/8

0.87

0.31

0.30

0.79

744-11-M16X1.5-B

0.43

M 16 x 1.5

0.87

0.31

0.30

0.79

744-14-G1/2-B

0.55

G 1/2

1.02

0.33

0.30

0.91

744-14-M20X1.5-B

0.55

M 20 x 1.5

1.02

0.33

0.30

0.91

744-18-G3/4-B

0.71

G 3/4

1.26

0.35

0.31

1.18

744-18-M26X1.5-B

0.71

M 26 x 1.5

1.26

0.35

0.31

1.18

744-18-M27X1.5-B

0.71

M 27 x 1.5

1.26

0.35

0.31

1.18

744-24-G1-B

0.94

G 1

1.57

0.43

0.33

1.42

744-24-M33X1.5-B

0.94

M 33 x 1.5

1.57

0.43

0.33

1.42

Part Number	d₁	d₂ Pipe thread	Fine thread	d₃	l₁	l₂	s

744-11-G3/8-C	0.43	G 3/8	-	0.87	0.31	0.30	0.79
744-11-M16X1.5-C	0.43	-	M 16 x 1.5	0.87	0.31	0.30	0.79
744-14-G1/2-C	0.55	G 1/2	-	1.02	0.33	0.30	0.91
744-14-M20X1.5-C	0.55	-	M 20 x 1.5	1.02	0.33	0.30	0.91
744-18-G3/4-C	0.71	G 3/4	-	1.26	0.35	0.31	1.18
744-18-M26X1.5-C	0.71	-	M 26 x 1.5	1.26	0.35	0.31	1.18
744-18-M27X1.5-C	0.71	-	M 27 x 1.5	1.26	0.35	0.31	1.18
744-24-G1-C	0.94	G 1	-	1.57	0.43	0.33	1.42
744-24-M33X1.5-C	0.94	-	M 33 x 1.5	1.57	0.43	0.33	1.42

Part Number	d₁	d₂ Pipe thread	Fine thread	d₃	l₁	l₂	s

744-14-G1/2-A	0.55	G 1/2	-	1.02	0.33	0.30	0.91
744-14-M20X1.5-A	0.55	-	M 20 x 1.5	1.02	0.33	0.30	0.91
744-18-G3/4-A	0.71	G 3/4	-	1.26	0.35	0.31	1.18
744-18-M26X1.5-A	0.71	-	M 26 x 1.5	1.26	0.35	0.31	1.18
744-18-M27X1.5-A	0.71	-	M 27 x 1.5	1.26	0.35	0.31	1.18
744-24-G1-A	0.94	G 1	-	1.57	0.43	0.33	1.42
744-24-M33X1.5-A	0.94	-	M 33 x 1.5	1.57	0.43	0.33	1.42

d₁	d₂ Pipe thread	Fine thread	d₃	l₁	l₂	s

0.28	G 1/4	M 12 x 1.5	-	0.79	0.30	0.26	0.71
0.43	G 3/8	M 16 x 1.5	-	0.87	0.31	0.30	0.79
0.55	G 1/2	M 20 x 1.5	-	1.02	0.33	0.30	0.91
0.71	G 3/4	M 26 x 1.5	M 27 x 1.5	1.26	0.35	0.31	1.18
0.94	G 1	M 33 x 1.5	-	1.57	0.43	0.33	1.42

d₁

d₂
Pipe thread

Fine thread

d₃

l₁

l₂

0.28

G 1/4

M 12 x 1.5

0.79

0.30

0.26

0.71

0.43

G 3/8

M 16 x 1.5

0.87

0.31

0.30

0.79

0.55

G 1/2

M 20 x 1.5

1.02

0.33

0.30

0.91

0.71

G 3/4

M 26 x 1.5

M 27 x 1.5

1.26

0.35

0.31

1.18

0.94

G 1

M 33 x 1.5

1.57

0.43

0.33

1.42

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Min	Max	Price
1	49	US$9.84
50	99	US$9.02
100	249	US$8.20
≥ 250		US$7.38

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GN 744 Fluid Sight Glasses Aluminum, Plastic Sight Glass

Product description

Specification

Accessory

On request

Part Options / Table

Type

Type: B - Without reflector (all sizes)

Type: C - With red marking ring (only d~1~ = 11 / 14 / 18 / 24 mm)

Type: A - With prismatic effect (only d~1~ = 14 / 18 / 24 mm)

Metric

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Assembly note

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EN 543.4

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GN 7490

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A	With prismatic effect (only d₁ = 14 / 18 / 24 mm)
B	Without reflector (all sizes)
C	With red marking ring (only d₁ = 11 / 14 / 18 / 24 mm)