Elbow 1a short, 90°, IT/ET, Rp/R 1 1/4, black malleable cast iron - Riegler 112841

Elbow 1a, short, 90°, IT/ET, Rp/R 1 1/4, Operating temp. -20°C to 300°C, black malleable cast iron, Hot-dip galvan., DIN EN 10242 Acc. to DIN EN 10242 (formerly DIN 2950) The classic - and the most popular - screw fitting series for pipe construction. These fittings are characterized by their high mechanical strength and surface quality to DIN 2444. They are completely coated with a layer of pure zinc and are therefore suitable for drinking water

Standards and origin

• Standard thread: ISO 7-1
• Customs tariff number: 73071910
• Country of origin: CN

About Bends 90° and 45°

Elbows turn a threaded pipe run through 90° or 45° without bending or welding. Thread sizes run from Rp 1/4 female up to Rp 3 female, which covers small branch lines as well as main runs. All 109 items use ISO 7-1 threads.

What matters when choosing

• Thread 1 defines the size and runs from Rp 1/4 female to Rp 3 female. It follows the nominal bore of the connected pipe rather than the space available.
• Thread 2 determines the body style. Versions with R 3/8 male to R 2 male give the female/male transition elbow, two female threads from Rp 1/2 to Rp 1 1/2 give the plain connecting elbow between two nipples.
• The angle follows the routing. Use 90° for a tight change of direction, 45° where the turn should be flatter or where two elbows form an offset.
• The whole series uses ISO 7-1 threads. Parts with parallel threads cannot be screwed in directly and need an adapter.
• The material is black malleable cast iron B350-10 Design Symbol A throughout. A different material class, for drinking water for example, calls for a different fitting series.

Typical applications

• Changes of direction in threaded compressed air ring mains in workshops and production
• Pipework at compressor stations and air treatment units
• Plant construction with threaded pipe where welded bends are not an option
• Water and heating lines in commercial buildings
• Retrofits and rebuilds of existing lines, since the joint can be undone again

All 109 items are made of black malleable cast iron B350-10 Design Symbol A with threads to ISO 7-1. The stated country of origin is CN.