Type 3508… and 3509…
3508… 1.4571 (X6CrNiMoTi 17-12-2, AISI 316 Ti, V4A)
3509… 1.4301 (X5CrNi18-10, AISI 304, V2A)
Stainless steel with drilled sight star, unpainted. Operating pressure 4 bar, temperature resistant up to 120 °C, with natural glass.
Group VA · Stainless steel
Stainless steel oil sight glass – round, screwed in from the front
Oil sight glass made of stainless steel, round, with fixed reflector (drilled sight star), screwed from the front, optionally with fixed reflector (sight star) or without reflector or with float glass or borofloat glass.
Versions
The article number is made up of the type (see below) and the thread size (see tables).
Type 3518… and 3519…
3518… 1.4571 (X6CrNiMoTi 17-12-2, AISI 316 Ti, V4A)
3519… 1.4301 (X5CrNi18-10, AISI 304, V2A)
As type 3508… and 3509…, but without sight star.
Type 3608… and 3609…
3608… 1.4571 (X6CrNiMoTi 17-12-2, AISI 316 Ti, V4A)
3609… 1.4301 (X5CrNi18-10, AISI 304, V2A)
Stainless steel with drilled sight star, unpainted. Operating pressure 3 bar (oil-tight), temperature resistant up to 300 °C, with Borofloat 33 glass (formerly Tempax).
Type 3618… and 3619…
3618… 1.4571 (X6CrNiMoTi 17-12-2, AISI 316 Ti, V4A)
3619… 1.4301 (X5CrNi18-10, AISI 304, V2A)
As type 3608… and 3609…, but without sight star.
Forming the article number
Type + thread size (2nd part of the article number from the table).
| Example 1 | 3509… + …0200 = 35090200 | AISI 304 (V2A), G 2”, float glass up to 120 °C, with drilled sight star unpainted |
|---|---|---|
| Example 2 | 3618… + …6020 = 36186020 | AISI 316 Ti (V4A), M 60x2.0, Tempax up to 300 °C, without sight star |
Threads and dimensions
| Thread | Article no. (2nd part) | Outer Ø (D) | Sight window Ø (d) | Length (L) | Collar height (h) |
|---|---|---|---|---|---|
| Pipe thread BSP DIN ISO 228 | |||||
| G 3/8“ | …0038 |
22 mm |
9 mm |
12 mm |
4 mm |
| G 1/2“ | …0012 |
26 mm |
12 mm |
12 mm |
4 mm |
| G 3/4“ | …0034 |
32 mm |
17 mm |
12 mm |
4 mm |
| G 1“ | …0100 |
38 mm |
22 mm |
13.5 mm |
4.5 mm |
| G 1 1/4“ | …0114 |
48 mm |
28 mm |
14.5 mm |
4.5 mm |
| G 1 1/2“ | …0112 |
55 mm |
33 mm |
16 mm |
5 mm |
| G 2“ | …0200 |
70 mm |
43 mm |
16.5 mm |
5 mm |
| Metric thread DIN 13 | |||||
| M 16x1.5 | …1615 |
22 mm |
9 mm |
12 mm |
4 mm |
| M 18x1.5 | …1815 |
22 mm |
9 mm |
12 mm |
4 mm |
| M 20x1.5 | …2015 |
26 mm |
12 mm |
12 mm |
4 mm |
| M 22x1.5 | …2215 |
26 mm |
12 mm |
12 mm |
4 mm |
| M 24x1.5 | …2415 |
30 mm |
15 mm |
12 mm |
4 mm |
| M 26x1.5 | …2615 |
32 mm |
17 mm |
12 mm |
4 mm |
| M 27x1.5 | …2715 |
32 mm |
17 mm |
12 mm |
4 mm |
| M 30x1.5 | …3015 |
36 mm |
20 mm |
13 mm |
4.5 mm |
| M 33x1.5 | …3315 |
38 mm |
22 mm |
13.5 mm |
4.5 mm |
| M 35x1.5 | …3515 |
42 mm |
25 mm |
13.5 mm |
4.5 mm |
| M 36x1.5 | …3615 |
42 mm |
25 mm |
13.5 mm |
4.5 mm |
| M 42x1.5 | …4215 |
48 mm |
28 mm |
14.5 mm |
4.5 mm |
| M 48x1.5 | …4815 |
55 mm |
33 mm |
16 mm |
5 mm |
| M 60x2 | …6020 |
70 mm |
43 mm |
16.5 mm |
5 mm |
Other thread sizes, special seals (e.g. Viton, PTFE) and glasses on request.