Value Collection SS-BU-FT4 Compression Bulkhead Union 1/4 in

Product Description

The VALUE COLLECTION SS-BU-FT4 is a stainless steel compression tube bulkhead union designed to create a leak-tight, through-panel tube connection using compression fittings on both ends. Machined from 316 stainless steel to meet ASTM A276 and related standards, this fitting accepts 1/4 inch outside diameter tubing on each side and threads into a panel or bulkhead via a 7/16-20 UNF thread. Overall installed length is 2.27 inches. It is suited for instrumentation, fluid handling, and process systems where corrosion resistance and secure panel penetration are required. Licensed plumbers, pipefitters, and instrumentation technicians are the typical installers.

This bulkhead union is used wherever a tube line must pass cleanly through a panel, enclosure wall, or bulkhead while maintaining a pressure-rated, corrosion-resistant seal. Common applications include industrial process instrumentation, pneumatic control panels, hydraulic enclosures, chemical handling systems, and marine or offshore environments where 316 stainless steel is specified for its chloride resistance. The compression ends eliminate the need for soldering or welding at the panel penetration point, making field installation straightforward. Compatible with 1/4 inch OD tubing routed through panel thicknesses appropriate for the 7/16-20 UNF thread engagement length.

Key Features

• 316 stainless steel construction meets ASTM A182, ASTM A213, ASTM A269, ASTM A276, ASTM A479, DIN EN10122-5, and DIN EN10272
• Compression x compression ends accept 1/4 inch OD tubing on both sides with no soldering or welding required
• 7/16-20 UNF thread provides secure panel or bulkhead mounting
• Overall length of 2.27 inches suits standard enclosure wall thicknesses
• Corrosion-resistant 316 alloy appropriate for chemical, marine, and process environments
• Single-piece unit sold individually, compatible with standard compression tube ferrule assemblies

Compatibility

Designed as a direct-style replacement referencing Swagelok part number SS-400-61. Accepts standard 1/4 inch OD tubing with compression-style ferrule sets. Verify panel thickness accommodates the 7/16-20 UNF thread engagement before installation.

Installation Notes

Installation is performed by licensed pipefitters or instrumentation technicians following applicable facility and code requirements. Depressurize and isolate the tube circuit completely before disassembly or fitting installation. Use appropriate tube cutters and deburring tools to prepare tubing ends for proper ferrule seating. Do not over-tighten compression nuts; follow the fitting manufacturer's standard ferrule make-up procedure based on tubing material and wall thickness.