3/8 inch x 4 inch Brass Nipple

3/8" x 4" Red Brass Nipple – Precision-Threaded Component for Pressurized Systems

The 3/8 inch x 4 inch Red Brass Nipple is machined for dependable performance in piping assemblies where corrosion resistance and dimensional accuracy are critical. Manufactured from lead-free red brass, this component supports code-compliant installations in potable water systems and is suitable for a range of mechanical and plumbing configurations.

With male NPT threads on both ends, this nipple facilitates direct coupling between fittings or pipe segments, offering a reliable solution for both new builds and system retrofits. It is commonly used in environments where water quality, durability, and ease of installation are primary concerns.

Performance Features

• ✅ Lead-Free Red Brass (Alloy C69300 or equivalent): Approved for potable water applications and corrosion-critical systems.
• ✅ Threaded Ends: Precision-machined NPT threads ensure tight sealing and reduced torque loss under load.
• ✅ Corrosion Resistance: Suitable for long-term exposure to moisture, high mineral content, or mildly aggressive water chemistry.
• ✅ Structural Integrity: Durable under fluctuating pressure and temperature conditions common in domestic water and HVAC systems.

Technical Specifications

• Size: 3/8 inch nominal pipe size
• Length: 4 inches
• Material: Red brass, lead-free
• Thread Type: NPT (Male x Male)
• Compliance: Meets applicable codes for potable water distribution (e.g., NSF/ANSI 61/372 compliant)

Primary Applications

This nipple is frequently installed in pressurized potable water lines, heating system manifolds, and mechanical assemblies requiring corrosion-resistant metal-to-metal threaded joints. Common use cases include:

• Domestic water supply lines
• Commercial and institutional plumbing systems
• Low-pressure hydronic and HVAC piping connections

Installation Guidelines

Apply an appropriate thread sealant or PTFE tape before threading into adjoining components. Use a calibrated wrench to avoid thread galling or over-tightening. Always verify alignment and perform hydrostatic or air testing per code prior to commissioning the system.

Code Compliance Note

Red brass nipples manufactured from lead-free alloys are required for use in potable water systems under U.S. federal and local plumbing codes. This component meets those requirements and is suitable for use in certified assemblies.

The 3/8" x 4" Red Brass Nipple delivers consistent performance and longevity in fluid systems where regulatory compliance and installation quality are essential. It is an ideal solution for professionals requiring a robust, code-approved threaded connection in both new and existing plumbing networks.