Fitting 330, IT/IT, Rp/Rp 3, NBR seal, black malleable cast iron - Riegler K1816

Fitting 330, IT/IT, Rp/Rp 3, NBR seal, black malleable cast iron. This range covers 10 variants from 5.66 EUR. Select the version you need above.

Available variants

Shared technical data

About Unions

Malleable cast iron unions join two threaded pipes so that the line can be separated again later without turning the pipes. The range runs from Rp 1/4 to Rp 3 and is available with female thread on both sides or with female and male thread. Threads follow ISO 7-1.

What matters when choosing

• Thread 1 as the connection size to the line: Rp 1/4 to Rp 3 female.
• Thread 2 on the opposite side: Rp 3/8 to Rp 2 1/2 female or R 1/2 to R 1 1/2 male, depending on whether the union meets a pipe or a device.
• Sealing principle: version 330 seals flat against an NBR gasket, with an operating temperature stated as -20 °C to 200 °C.
• Material: black malleable cast iron B350-10, design symbol A, the same across all 71 articles in this group.
• Installation point: a union belongs where the line will later be taken apart, so ahead of valves, filters, meters or pumps.

Typical applications

• Break points in compressed air ring mains ahead of air treatment units and take-offs.
• Heating and sanitary installations built from threaded pipe.
• Tying in pumps and valves that have to be removed for servicing.
• Retrofitting into existing pipe runs where no pipe can be rotated any more.
• Industrial pipework that calls for detachable joints rather than welds.

Threads comply with ISO 7-1 and the fittings follow DIN EN 10242, with black malleable cast iron B350-10, design symbol A, as the material. Maximum temperature and maximum operating pressure must not occur at the same time.