Crystal-clear plastic

GN 541 Oil level sight glasses

Oil level sight glasses GN 541 thumbnail

HFTX.

Type

A	with contrast screen
B	without contrast screen

d₁ Winow glass	d₂		d₃	l₁	l₂	s	recommeded tightening torque in Nm
9	G 1/4	-	18	10	6	15	: 2 ... 3
11	G 3/8	M 16 x 1,5	22	8	7	19	: 3 ... 5
14	G 1/2	M 20 x 1,5	26	10	8	22	: 4 ... 6
18	-	M 25 x 1,5	31	8	10	27	-
19	-	M 26 x 1,5	31	13	9	27	-
20	G 3/4	M 27 x 1,5	31	10	10	27	: 6 ... 8
22	-	M 30 x 1,5	35	9	10	30	-
25	G 1	M 35 x 1,5	40	11	10	34	: 8 ... 10
30	G 11/4	M 40 x 1,5	47	12	13	41	: 8 ... 10

Specification

Plastic
Crystal-clear Polyamid (PA 6-T)

ageing resistant
high mechanical strength,
but not suitable for alcohol
temperature resistant up to 110 °C
solvent resistant,
but not suitable for alcohol

Sealing ring rubber NBR (Perbunan)

Contrast screen Aluminium
natural colour, anodized

Elastomer characteristics

Plastic characteristics

RoHS compliant

Accessory

Fixing nuts GN 543.1

Information

Oil level sight glasses GN 541 are practically indestructible. Even at high torque there is no danger of any breakage.

Oil level sight glasses GN 541 can also be used in tanks which are pressurised. The max permissible pressure is dependent on the tank size operating conditions (i.e. temperature). Test results are available.

Assembly instruction:
For mounting on walls of less than 4 mm thickness please use a fixing nut GN 543.1.

How to order