Vne V31W-6L4.0X3.0 Sanitary Concentric Reducer 4x3 in

Product Description

The VNE V31W-6L4.0X3.0 is a sanitary-grade concentric reducer fitting designed to transition flow between a 4-inch and a 3-inch pipe run in a single inline reduction. Manufactured from 316L stainless steel, this fitting delivers the corrosion resistance and surface finish required for food processing, dairy, beverage, pharmaceutical, and biotech piping systems. Both end connections are butt weld, making this a permanent, crevice-free joint appropriate for high-purity and high-pressure sanitary lines. Installation is performed by certified welders or pipefitters working to 3-A or applicable sanitary piping standards.

This reducer is suited for sanitary process piping in residential dairy farms, commercial food and beverage production facilities, and pharmaceutical or biotech manufacturing environments. It is used wherever a concentric, centerline-aligned pipe reduction is required to maintain laminar flow and full drainability in clean-in-place (CIP) systems. The butt weld end connections make it appropriate for orbital or manual TIG welding applications in both new construction and retrofit piping projects.

Key Features

• 316L stainless steel construction provides superior corrosion resistance in sanitary process environments
• Concentric design maintains centerline alignment for consistent flow and full drainability
• Butt weld x butt weld end connections allow permanent, crevice-free joints suitable for CIP systems
• 4-inch to 3-inch reduction handles standard sanitary pipe size transitions
• Low-carbon 316L grade minimizes carbide precipitation risk during welding

Compatibility

Designed as an OEM-style sanitary fitting for use in 4-inch to 3-inch stainless steel butt weld sanitary piping systems conforming to standard sanitary tubing dimensions.

Installation Notes

Installation is performed by a qualified pipefitter or certified welder using TIG welding procedures appropriate for 316L stainless steel. Purge the pipe interior with inert gas during welding to prevent oxidation on the weld ID surface. Shut down and depressurize the process line completely before cutting into any existing piping. Post-weld passivation is recommended to restore the corrosion-resistant oxide layer on the weld zone.