Reducing nipple INVENA ZO-21-032 zinc-plated 5/4" x 3/4" pipe fitting

INVENA ZO-21-032 reducing nipple is a zinc-plated pipe fitting designed to join two threaded pipes of different diameters, with one end sized 5/4" and the other 3/4". The fitting creates a durable metallic transition between the larger and smaller threads, enabling a secure threaded connection in domestic and commercial plumbing systems. It is intended for use in water supply, heating circuits and general piping where a threaded reduction is required for repair, retrofit or new installation work.

Advantages

The zinc-plated surface provides corrosion resistance suitable for common plumbing environments while maintaining mechanical strength. A single-piece construction ensures alignment and tightness between mismatched thread sizes without the need for additional adapters. The standard thread profiles allow compatibility with commonly used threaded pipe fittings, facilitating quick installation and reliable sealing when used with appropriate thread sealant.

Suitable for

• Reducing threaded connections in domestic water supply lines
• Connecting different-diameter pipes in heating systems
• Repairs and retrofits where a durable metal reduction is required
• Temporary or permanent threaded transitions in general plumbing

Key specifications

• Material: zinc-plated metal
• Connection types: threaded male ends
• Thread sizes: one end 5/4" and other end 3/4"
• Construction: single-piece reducing nipple
• Typical applications: potable water, heating, general piping systems

How to use

Ensure both mating threads are clean and free of debris or old sealant. Apply an appropriate thread sealant or tape to the male threads as recommended for the system media (for example, PTFE tape for water lines). Hand-start the reduction nipple into the mating female thread to avoid cross-threading, then tighten with a suitable wrench until a secure, leak-free connection is achieved. Take care not to overtighten, which can damage threads or distort fittings. Verify system pressure and inspect for leaks after pressurizing.

Usage recommendations

Use compatible thread sealants and follow local plumbing codes. Avoid use with aggressive chemicals or media not compatible with zinc-plated surfaces. For high-corrosion environments, consider alternative materials or protective measures.