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You are here: Product Overview > 3.5 Controlling, Venting, Sealing of Liquids and Gases > Fluid Sight Glasses > EN 541 Fluid Sight Glasses previous product next product

EN 541 Fluid Sight Glasses Crystal Clear Plastic

Photo

EN 541 Crystal Clear Plastic Fluid Sight Glasses Type: A - With reflector

ELESA original design
code: HFTX.

Type: A - With reflector

EN 541 Crystal Clear Plastic Fluid Sight Glasses Type: B - Without reflector

Standard Sheet EN 541 Print This Page Plastic Characteristics Elastomer Characteristics

Product description

Information

EN 541 fluid sight glasses made of polyamide plastic have a high mechanical strength. Therefore, they can be produced with thinner walls and with a large viewing window.

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

Assembly note:
For wall thicknesses below 4 mm, use GN 7430 thin hexagon nuts.

Specification

Body
Plastic
Crystal clear Polyamide PA-T

Aging resistant
High mechanical strength,
but not alcohol resistant
Temperature resistant 212 °F (100 °C)
Solvent resistant,
but not alcohol resistant

Reflector
Aluminum
Anodized finish, natural color

Seal
Rubber NBR (Perbunan^®)

RoHS compliant

Accessory

Thin hexagon nuts GN 7430

Technical drawing

EN 541 Crystal Clear Plastic Fluid Sight Glasses sketch

Hide technical drawing

Part Options / Table

Type

A	With reflector
B	Without reflector

Part Number A - With reflector	Part Number B - Without reflector	d₁	d₂ Fine thread	Pipe thread	d₃	l₁	l₂	s	Recommended tightening torque in Nm

541-13-3/4X16-A	541-13-3/4X16-B	0.51	3/4 x 16	-	1.02	0.59	0.31	0.87	3
541-19-11/16X12-A	541-19-11/16X12-B	0.75	1 1/16 x 12	-	1.38	0.59	0.39	1.18	5
541-11-M16X1.5-A	541-11-M16X1.5-B	0.43	M 16 x 1.5	-	0.87	0.31	0.28	0.75	2 ... 3
541-14-M20X1.5-A	541-14-M20X1.5-B	0.55	M 20 x 1.5	-	1.02	0.37	0.31	0.87	8 ... 10
541-18-M25X1.5-A	541-18-M25X1.5-B	0.71	M 25 x 1.5	-	1.24	0.31	0.35	1.06	8 ... 10
541-18-M26X1.5-A	541-18-M26X1.5-B	0.71	M 26 x 1.5	-	1.24	0.51	0.35	1.06	8 ... 10
541-20-M27X1.5-A	541-20-M27X1.5-B	0.79	M 27 x 1.5	-	1.24	0.35	0.35	1.06	8 ... 10
541-22-M30X1.5-A	541-22-M30X1.5-B	0.87	M 30 x 1.5	-	1.38	0.35	0.39	1.18	8 ... 10
541-25-M35X1.5-A	541-25-M35X1.5-B	0.98	M 35 x 1.5	-	1.57	0.43	0.39	1.34	8 ... 10
541-30-M40X1.5-A	541-30-M40X1.5-B	1.18	M 40 x 1.5	-	1.85	0.45	0.51	1.59	8 ... 10
541-9-G1/4-A	541-9-G1/4-B	0.35	-	G 1/4	0.71	0.39	0.24	0.59	2 ... 3
541-11-G3/8-A	541-11-G3/8-B	0.43	-	G 3/8	0.87	0.30	0.28	0.75	3 ... 5
541-14-G1/2-A	541-14-G1/2-B	0.55	-	G 1/2	1.02	0.41	0.31	0.87	4 ... 6
541-20-G3/4-A	541-20-G3/4-B	0.79	-	G 3/4	1.24	0.41	0.35	1.06	6 ... 8
541-25-G1-A	541-25-G1-B	0.98	-	G 1	1.57	0.43	0.39	1.34	8 ... 10
541-30-G11/4-A	541-30-G11/4-B	1.18	-	G 1 1/4	1.85	0.45	0.51	1.59	8 ... 10

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Inch

Dimensions in: Inch (change to Metric)

d₁	d₂ Fine thread	Pipe thread	d₃	l₁	l₂	s	Recommended tightening torque in Nm

0.51	3/4 x 16	-	1.02	0.59	0.31	0.87	3
0.75	1 1/16 x 12	-	1.38	0.59	0.39	1.18	5

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Metric

Dimensions in: Inch | Metric

d₁	d₂ Fine thread	Pipe thread	d₃	l₁	l₂	s	Recommended tightening torque in Nm

0.43	M 16 x 1.5	-	0.87	0.31	0.28	0.75	2 ... 3
0.55	M 20 x 1.5	-	1.02	0.37	0.31	0.87	8 ... 10
0.71	M 25 x 1.5	-	1.24	0.31	0.35	1.06	8 ... 10
0.71	M 26 x 1.5	-	1.24	0.51	0.35	1.06	8 ... 10
0.79	M 27 x 1.5	-	1.24	0.35	0.35	1.06	8 ... 10
0.87	M 30 x 1.5	-	1.38	0.35	0.39	1.18	8 ... 10
0.98	M 35 x 1.5	-	1.57	0.43	0.39	1.34	8 ... 10
1.18	M 40 x 1.5	-	1.85	0.45	0.51	1.59	8 ... 10
-	-	-	-	-	-	-	-
0.35	-	G 1/4	0.71	0.39	0.24	0.59	2 ... 3
0.43	-	G 3/8	0.87	0.30	0.28	0.75	3 ... 5
0.55	-	G 1/2	1.02	0.41	0.31	0.87	4 ... 6
0.79	-	G 3/4	1.24	0.41	0.35	1.06	6 ... 8
0.98	-	G 1	1.57	0.43	0.39	1.34	8 ... 10
1.18	-	G 1 1/4	1.85	0.45	0.51	1.59	8 ... 10