Male-Female Conical Reach Union Fitting in Galvanized Malleable Cast Iron

Male-Female Conical Reach Union Fitting in Galvanized Malleable Cast Iron

The Male-Female Conical Seat Union Fitting made of galvanized malleable cast iron is a strategic component for your piping systems. It is designed to provide a reliable and removable connection, while ensuring exceptional corrosion resistance thanks to its hot-dip galvanizing coating. This fitting is the ideal solution for creating easy access points for maintenance or replacement of parts. Its three-piece structure, with a central loose nut , provides superior sealing by compressing the internal tapered span (metal-to-metal).

A Major Asset for Network Maintenance

The main purpose of this union fitting is to provide a quick and secure disassembly point on a pipe line. In practice, if an element of the network (such as a valve or filter) needs to be replaced or repaired, the simple fact of unscrewing the free nut of the union allows the circuit to be separated in a few moments, without having to disassemble the pipes on either side. This is a significant time saver and a guarantee that the integrity of other fittings will not be compromised.

Wet Applications and Industrial Aesthetics

The galvanized finish makes this union fitting a must-have in environments exposed to moisture or aggressive fluids. It is ideally suited for the distribution of water (including drinking water), gases, steam and for the transport of non-corrosive liquids and gases. It is indispensable in HVAC (Heating, Ventilation and Air Conditioning) systems and any outdoor installation. Its raw, silvery appearance is also highly sought after for industrial furniture. The integration of this galvanized malleable cast iron union fitting adds a very authentic and functional vintage and loft touch to furniture structures.

Quality, Materials and Normative Compliance

This union fitting is manufactured according to strict specifications, complying with the international standards EN 10242 and ISO 49. The base material is malleable cast iron EN-GJMB-350-10 (according to EN 1562), chosen for its high mechanical strength and resilience. The galvanizing process enriches this base by applying a protective layer of zinc, significantly improving the durability of the fitting against oxidation.

Double Sealing and Galvanic Protection

The reliability of this fitting is ensured by a double protection mechanism.

• The fitting has one side with a tapered male thread (R) and one side with a cylindrical female thread (Rp), both of which comply with ISO 7-1 (BSPT). Internal sealing is provided by the metal-to-metal tapered seat, which requires no additional flat seals . The free nut uses a gas type thread (BSPP), according to ISO 228-1.

• Hot-dip galvanizing is applied with a minimum thickness of at least 70μm (micrometers). This coating provides a highly effective corrosion barrier that extends the useful life of the fitting.

• Each fitting is 100% tested to ensure it is watertight when it leaves the factory.

Tips for Safe Implementation and Use

To ensure the tightness and performance of this fitting, it is essential to follow a precise installation procedure:

• Tightness of the nets: Apply a suitable sealant (Teflon or joint paste) to the tapered male thread (R) that connects to the female side (Rp) of the union body.

• Union Tightening: After screwing the two parts onto the pipes, bring them together and tighten the loose nut firmly. The clamping must be sufficient to compress the tapered span and ensure metal-to-metal tightness.

• Control: In pressure applications, a leak check after tightening is crucial.

• Aggressive Environment: The galvanized coating protects optimally, but make sure not to damage it during installation to maintain anti-corrosion effectiveness.

Detailed technical specifications

The table below provides a summary of the key specifications of this union fitting: