Double thr. nipple »NonPlusUltra«, red., G3/8, G1/4, PU10 - Riegler 132176

Double threaded nipple, chamb. o-ring »NonPlusUltra«, red., G3/8, G1/4, FPM (FDA), p = -0,99…25 bar, T = -20…150 °C, 1.4404, PU 10 The NonPlusUltra series combines excellent material quality with the best workmanship. All components are characterized by maximum tightness and optimized flow. Made entirely of corrosion-free and acid-resistant stainless steel with a surface roughness (Ra) < 0.8, they are extremely robust and easy to clean (can also be sterilized). Movable fittings are suitable for continuous movement due to a special swivel mechanism. The stainless steel unions have a wide range of applications, for example in process engineering, food and pharmaceutical industries, water-cooling, lubrication, gases, vacuum and clean room (suitable cleaning of the parts is the responsibility of the user). They are ideal for use in conjunction with our PUR hoses for food contact (FDA). Available on request with EPDM seals, EPDM seals with drinking water approval, suitable for cleanroom class 3 according to DIN EN ISO 14644-1 and with colored ceramic coding.

Technical data

Standards and origin

• Standard thread: DIN EN ISO 228-1
• Customs tariff number: 73072910
• Country of origin: DE

About Double nipples

A double threaded nipple joins two female ports and bridges the size step when fitting and connection do not match. Both ends carry a male thread, either in the same size or reduced. Working pressure runs from 20 to 60 bar depending on the version.

What matters when choosing

• Thread 1 and thread 2 decide whether the nipple extends or reduces. Both sides are covered from M5 and G 1/8 up to G 1 1/4, the second side additionally up to R 2.
• The thread form determines how the joint seals. Parallel G threads to DIN EN ISO 228-1 need a separate seal, tapered R threads to ISO 7-1 seal in the thread itself.
• Brass CW614N is the default material. Electroplated nickel-plated brass CW614N suits visible installations and mild humidity, stainless steel 1.4571, 1.4408 and 1.4404 aggressive media.
• Working pressure between 20 and 60 bar depends on material and size. For large threads from G 1 upwards, check the value per article rather than assuming the top figure of the group.
• Maximum operating temperature sits between 150 °C and 200 °C. Where steam or hot oil is carried, that is the deciding criterion alongside pressure.

Typical applications

• Joining two female-threaded fittings in a pipe run without an extra socket
• Stepping down from a larger manifold port to a smaller connecting line
• Mounting gauges, shut-off valves and filters on air preparation units
• Extending a short connection spigot so a wrench can be applied
• Building manifolds for water, oil and neutral gases in workshop and plant construction

The NonPlusUltra versions are made from stainless steel 1.4404 and sealed with FDA-compliant FPM, released for compressed air, neutral gases and liquids, oil and grease. The value line series is also part of the group, which holds 292 articles in total.