Group A
Brass oil sight glass
Screwed in position from the front

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Composition article No.:
Model (see below) + thread size (see table completely below)

Model: 3505...

With fixed reflector white painted* or not painted (colorless) made from Brass, operating pressure 4 bar, heat resistant up to 120ºC, with Float glass, in accordance with DIN 3169

Model: 3515...

see 3505..., however, without reflector

Model: 3605...

With fixed reflector white painted* or not painted (colorless) made from Brass, operating pressure 3 bar (oilproof), heat resistant up to 300ºC, with glass from Borofloat 33 (formerly Tempax)

Model: 3615...

see 3605..., however without reflector

Composition N° Model: Model (see above) + Thread-Size (see below)

Example:	3505…+…1615 = 35051615	Brass, M 16x1,5, Float glass to 120°C, with fixed reflector white painted*
or	3615…+…0100 = 36150100	Brass, G 1“, Tempax to 300 °C, without reflector

Metrical ISO-Thread DIN 13					(from M 16x1,5 to M 27x1,5)
Thread (G)	M 16x1,5	M 18x1,5	M 20x1,5	M 22x1,5	M 24x1,5	M 26x1,5	M 27x1,5
Article-No. (part 2) (Thread-Size)	...1615	...1815	...2015	...2215	...2415	...2615	...2715
Whitworth Thread (BSP) DIN ISO 228 (DIN 259)					(from G 3/8“ to G 3/4“)
Thread (G)	G 3/8“		G 1/2“				G 3/4“
Article-No. (part 2) (Thread-Size)	...0038		...0012				...0034
Dimension
Outside-ø (D)	22 mm	22 mm	26 mm	26 mm	30 mm	32 mm	32 mm
Inside-ø (d)	9 mm	9 mm	12 mm	12 mm	15 mm	17 mm	17 mm
Length (L)	12 mm	12 mm	12 mm	12 mm	12 mm	12 mm	12 mm
Collar height (h)	4 mm	4 mm	4 mm	4 mm	4 mm	4 mm	4 mm

Metrical ISO-Thread DIN 13					(from M 30x1,5 to M 60x2,0)
Thread (G)	M 30x1,5	M 33x1,5	M 35x1,5	M 36x1,5	M 42x1,5	M 48x1,5	M 60x2,0
Article-No. (part 2) (Thread-Size)	...3015	...3315	...3515	...3615	...4215	...4815	...6020
Whitworth Thread (BSP) DIN ISO 228 (DIN 259)					(from G 1“ to G 2“)
Thread (G)		G 1 “			G 1 1/4“	G 1 1/2“	G 2“
Article-No. (part 2) (Thread-Size)		...0100			...0114	...0112	...0200
Dimension
Outside-ø (D)	36 mm	38 mm	42 mm	42 mm	48 mm	55 mm	70 mm
Inside-ø (d)	20 mm	22 mm	25 mm	25 mm	28 mm	33 mm	43 mm
Length (L)	13 mm	13,5 mm	13,5 mm	13,5 mm	14,5 mm	16 mm	16,5 mm
Collar height (h)	4,5 mm	4,5 mm	4,5 mm	4,5 mm	4,5 mm	5 mm	5 mm

Other thread size, special seals (e.g. Viton) and special glasses, with reflector not painted or types with width across flat on request.

• Reflector white painted – For each application, the customer must check the durability of the paint before use, as depending on the composition of the medium, temp. etc. the color can be detached. In case of uncertainties, we recommend the use of oil viewing glasses with reflector not painted "colorless" (brass colored)

Group ABrass oil sight glassScrewed in position from the front

Group A
Brass oil sight glass
Screwed in position from the front