PVC Water thread Connections turbiti
Connections
Most of the connections on the acniti website for the turbiti are specified as R or RC connections. R or RC connections are conical (taper) pipe threaded connections. According to the inch taper pipe threads (standards BS 21, EN 10226-1, ISO 7-1, DIN 2999). Other common names for the R are BSPT or previously PT in Japan.
R connections refer to an external male threaded fitting, and the RC connections refer to an internal female threaded fitting. For PVC/Plastic fittings, they are commonly referred to as DN or A fittings, denoted by a metric designation; the most common sizes are listed in the table below.
Rp inch sealed cylindrical internal thread and Rs inch sealed cylindrical external thread are parallel-shaped fittings. NPT fittings and G fittings are different types of fittings and are not compatible with R fittings; therefore, an adapter fitting is required.
| Nominal Size R | JIS A |
| 3/8" | 10A |
| 1/2" | 15A |
| 3/4" | 20A |
| 1" | 25A |
| 1 1/4" | 32A |
| 1 1/2" | 40A |
| 2" | 50A |
| 2 1/2" | 65A |
| 3" | 80A |
| 4" | 100A |
| 5" | 125A |
JIS PVC to DN PVC Inner Diameter Comparison
| JIS Nominal Size (mm) | JIS Inner Diameter (mm) | Recommended DN Size | DN Inner Diameter (mm) | Difference (mm) |
|---|---|---|---|---|
| 13 | 13.0 | DN15 | 17.8 | 4.8 |
| 16 | 16.0 | DN15 | 17.8 | 1.8 |
| 20 | 20.0 | DN15 | 17.8 | 2.2 |
| 25 | 25.0 | DN20 | 23.7 | 1.3 |
| 30 | 31.0 | DN25 | 29.8 | 1.2 |
| 40 | 40.0 | DN32 | 37.5 | 2.5 |
| 50 | 51.0 | DN50 | 53.7 | 2.7 |
| 65 | 67.0 | DN65 | 67.0 | 0.0 |
| 75 | 77.0 | DN80 | 79.0 | 2.0 |
| 100 | 100.0 | DN100 | 101.7 | 1.7 |
| 125 | 125.0 | DN125 | 124.9 | 0.1 |
| 150 | 146.0 | DN150 | 142.7 | 3.3 |
| 200 | 194.0 | DN200 | 176.2 | 17.8 |
| 250 | 240.0 | DN250 | 230.8 | 9.2 |
| 300 | 286.0 | DN300 | 290.8 | 4.8 |
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