Technical sheet

Summary #1

The Female Taper Seat Union / BW (Butt Weld) is a high-performance safety fitting, often referred to as a "three-piece fitting", designed to facilitate the quick assembly and disassembly of a section of piping. This specific model combines two connection technologies: a tapped face for screwing and a butt weld face, offering maximum flexibility to link threaded equipment to fixed welded networks. Manufactured according to the ISO 4144 standard, this fitting guarantees impeccable sealing and robustness adapted to the most critical industrial infrastructures.

Summary#2

Made entirely of AISI 316 (1.4401) stainless steel, this fitting has exceptional resistance against oxidation and chemical attacks, particularly in chlorinated or acidic environments. Its high-end composition allows it to withstand severe operating conditions, with an operating temperature range of -20°C to +220°C. It is the reference equipment for the pharmaceutical, food and petrochemical sectors, where the purity of materials and the longevity of installations are non-negotiable requirements.

Summary#3

The major advantage of this fitting is its tapered span, which ensures a perfect seal by direct metal-to-metal contact, eliminating the need for polymer seals that wear out over time. Calibrated for a nominal pressure of PN 20 bar, it offers total safety for discharge or steam circuits. In a specific case, this union is used to connect an industrial pump (threaded side) to a fixed stainless steel distribution network (BW side to be welded), allowing the pump to be removed for maintenance by simply loosening the central nut.6

Summary#4

This hybrid fitting complies with ISO 7-1 (BSPT) connection standards. The female part has a high-precision cylindrical thread (Rp), while the BW end is prepared for a homogeneous end weld with your stainless steel tubes. For example, when creating a dispensing manifold, the BW side is permanently welded to the manifold, while the female side allows valves or measuring instruments to be easily connected and disconnected, ensuring a hermetic seal and a dimensionally stable structure under pressure cycles.

Summary#5

Thanks to its three-piece independent design (two nose and one nut), this weld-on joint significantly reduces technical downtime during interventions. For a durable installation, be sure to align the two tapered spans before tightening the nut to avoid matting the metal. Whether in sugar factories for syrup circuits, in water treatment or steel mills, this 316 stainless steel fitting is a reliable solution that limits pressure drops and facilitates the evolution of your piping configurations without the need for heavy cuts.

Specific references

EAN13

3760269586192