SANHA Therm Nypel redukcyjny ZWxZZ 28×15 — reducing nipple, copper soldered connection

SANHA Therm Nypel redukcyjny ZWxZZ 28×15 is a copper reducing nipple designed for soldered connections in plumbing and heating systems. The component provides a permanent, gas-tight reduction from 28 mm to 15 mm diameter and is suitable for use in potable water, heating circuits and other closed pipework where a durable metallic joint is required. The solid-copper construction and soldered-joint design ensure thermal conductivity and corrosion resistance typical for copper fittings.

Advantages

The reducing nipple offers a compact and robust solution for transitioning between pipe sizes without threaded connections. Its soldered copper construction creates a leak-resistant joint when correctly brazed or soft-soldered to compatible copper pipes, eliminating the need for sealants or mechanical adapters. The simple geometry and smooth internal bore minimise flow disturbance and help maintain hydraulic performance across the reduction.

Suitable for

• Domestic and commercial potable water distribution
• Central heating and hot-water circulation systems
• Piping runs where a permanent copper-to-copper reduction is required
• Retrofit or repair work replacing larger fittings with smaller-diameter lines

Key specifications

• Material: copper
• Connection type: soldered (cup-and-spigot) joints
• Inlet diameter: 28 mm
• Outlet diameter: 15 mm
• Application: water and heating systems

How to use

Prepare the mating copper pipes by cleaning and deburring the ends, then apply appropriate flux to the joint areas. Insert the pipe ends into the fitting cups to the correct insertion depth and heat evenly with a suitable torch until the solder flows and fills the joint. Allow the assembly to cool naturally and then inspect for full wetting of the solder and any visible defects. Pressure-test the completed pipeline in accordance with applicable local standards and codes before putting into service.

Usage recommendations

Use solder alloys and flux types recommended for potable water or heating applications, and follow local regulations for brazing and soldering. For installations exposed to aggressive water chemistry or where dissimilar metals are present, consider appropriate protective measures or consult technical guidance. Only qualified personnel should perform soldered pipework to ensure safe, durable joints.