Features:
Certificate: FM Approved / UL Listed / BSI / LPCB / NSF 61
Size: 1/8”-4”(DN6 – DN100)
Pressure: 2.5 Mpa / PN25
Dimensions: ANSI B16.3
Material: Malleable iron ASTM A197
Threaded: NPT ASME B1.20.1
Surface: Black / Electrical galvanized / Hot-dip galvanized
Malleable iron backnut is Malleable cast iron backnut (Recessed) is hexagonal nuts with female threaded connection, and it is used to tighten nipple or other pipe joint, so to avoid slippage.
| Size | Inch | 1/8 | 14 | 3/8 | 1/2 | 3/4 | 1 |
| mm | 6 | 8 | 10 | 15 | 20 | 25 | |
| Dim. (mm) |
A Min | 4.8 | 6.4 | 7.1 | 7.9 | 8.6 | 9.7 |
| Size | Inch | 11/4 | 11/2 | 2 | 21/2 | 3 | 4 |
| mm | 32 | 40 | 50 | 65 | 80 | 100 | |
| Dim. (mm) |
A Min | 10.7 | 11.9 | 13.5 | 15 | 17 | 20.3 |
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