Is the Brass Manometric Reduction Nipple, Type RDN suitable for use with aggressive chemicals or only non-aggressive liquids and gases?

The Brass Manometric Reduction Nipple, Type RDN is suitable for use with non-aggressive liquids and gases only. Its high-quality brass construction, conical self-sealing system and adhesive-secured threads provide reliable, durable connections for pressure gauges, taps, valves and similar accessories, but the product description specifies compatibility exclusively with non-aggressive media.

Can the Brass Manometric Reduction Nipple, Type RDN be used with high-pressure steam applications or is it limited to standard pressure ranges?

Brass Manometric Reduction Nipple, Type RDN is designed per EN 837-1 for reliable connections of pressure gauges and related equipment and is suitable for non‑aggressive liquids and gases. The product description does not specify suitability for high‑pressure steam. Brass components and the self‑sealing conical system can handle typical industrial pressure ranges for gauges, but steam service—especially high‑pressure and high‑temperature steam—introduces additional demands (thermal expansion, erosion, corrosion, and seal integrity under temperature cycling) that are not addressed in the description. Therefore, do not assume it is rated for high‑pressure steam without manufacturer confirmation or a stated pressure/temperature rating for steam applications. For safe use in high‑pressure steam systems, obtain the nipple’s maximum allowable working pressure (MAWP) and temperature limits from the manufacturer and verify compatibility with steam (material suitability, seal performance, and adhesive used on threads).

Brass Manometric Reduction Nipple, Type RDN

All products, Manometers reducers and valves/

Additional information

Material	B – brass (bronze)
Standard length [m]	10

The internal and external threaded nipple made of high-quality brass is designed in compliance with EN 837-1, ensuring a reliable and precise connection for pressure gauges and related equipment. Its construction enables the installation of a pressure gauge into a larger socket, with the gauge mounted securely to the internal thread d1. The innovative self-sealing system, based on the conical design at the bottom of the d1 bore, guarantees tightness by pressing into the centering plug of the gauge connection. Both d1 and d2 threads are additionally protected against loosening with a special adhesive, providing long-term stability and safety of use. This robust connector is suitable for non-aggressive liquids and gases, making it an excellent choice for pressure gauges, taps, valves, and other compatible accessories. Durable, precise, and easy to install, it ensures dependable performance in a wide range of industrial and technical applications.

List of product variants

Article number	Product variant name	DN	BAR	Availability	Actions
FM-RDN-04B-06B	Reduction manifold 1/4" BSP / 3/8" BSP, brass	-	-	In stock	Enquiry
FM-RDN-04B-06N	Reduction manifold 1/4" BSP / 3/8" NPT, brass	-	-	In stock	Enquiry
FM-RDN-04B-08B	Reduction manifold 1/4" BSP / 1/2" BSP, brass	-	-	In stock	Enquiry
FM-RDN-04B-08N	Reduction manifold 1/4" BSP / 1/2" NPT, brass	-	-	In stock	Enquiry
FM-RDN-04B-M20	Reduction manifold 1/4" BSP / GZ M20x1.5, brass	-	-	In stock	Enquiry

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The internal and external threaded nipple made of high-quality brass is designed in compliance with EN 837-1, ensuring a reliable and precise connection for pressure gauges and related equipment. Its construction enables the installation of a pressure gauge into a larger socket, with the gauge mounted securely to the internal thread d1. The innovative self-sealing system, based on the conical design at the bottom of the d1 bore, guarantees tightness by pressing into the centering plug of the gauge connection. Both d1 and d2 threads are additionally protected against loosening with a special adhesive, providing long-term stability and safety of use. This robust connector is suitable for non-aggressive liquids and gases, making it an excellent choice for pressure gauges, taps, valves, and other compatible accessories. Durable, precise, and easy to install, it ensures dependable performance in a wide range of industrial and technical applications.