Oil Sight Glasses GN 743

Type: A - with reflector, plain finish

Product description

Oil sight glasses GN 743 offer a sight glass of high stability and scratch proof. The seal is achieved with an O-ring on the periphery and not on the face edge of the glass. Leak tightness is therefore not affected by axial pressures.

The outside diameter of these oil level sight glasses with recessed hex is chosen to match mounting holes for tube connections according to DIN 3852.

The sealing ring is housed in a groove and it can therefore not be lost. In addition, this groove prevents the seal from being extruded when the sight glass is tightened.

Oil sight glasses GN 743 can also be used on pressurised tanks. Tests regarding maximum pressure are available.

Specification

Body
Aluminum

Fine turned
Plain for type A / B
Anodized, black for type AS / BS

Sight glass
Float glass
Operating temperature up to 100 °C

Reflector
Plastic, Polyethersulfone (PESU)

Seal / O-ring
Acrylonitrile butadiene rubber (NBR)

RoHS

Accessory

Mounting Nuts GN 7430 (Messing)
Welding Sockets GN 7490 (Stahl)

On request

Seal / O-ring made of ethylene propylene diene monomer (EPDM)

d₁	d₂		d₃	l₁	l₂	s

7	G 1/4	M 14 x 1,5	-	20	7,5	6,5	18
11	G 3/8	M 16 x 1,5	-	22	8	7,5	20
14	G 1/2	M 20 x 1,5	-	26	8,5	7,5	23
18	G 3/4	M 26 x 1,5	M 27 x 1,5	32	9	8	30
24	G 1	M 33 x 1,5	-	40	11	8,5	36
32	G 1 1/4	M 40 x 1,5	M 42 x 1,5	50	12	9	46
32	G 1 1/2	-	-	60	13	9	55

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l₁

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