321SS Metal Hose – CS Female NPT Unions, Single / Double Braid

Description

The 321SS Hose / 304SS Braid – Female NPT Union x Female NPT Union assembly provides flexible, serviceable connections for industrial and mechanical piping systems. The 321 stainless steel corrugated hose accommodates controlled movement and vibration, while the 304 stainless steel braid reinforces the pressure boundary.

Key Features

• 321 stainless steel corrugated hose core
• 304 stainless steel braid reinforcement
• Female NPT union connections on both ends
• Single- or double-braid options where available
• Configurable hose ID and overall length
• Overall length from 12"–240" in 0.5" increments

Applications

Typical uses include HVAC and hydronic piping, pump and equipment connections, compatible process piping, vibration isolation, and installations requiring removable threaded unions. Steam service is not the approved self-service path for this Female NPT union family; use the controlled steam-service selection path or submit an engineering RFQ.

Engineering Review

Final suitability depends on hose ID, braid count, operating pressure, temperature, media, movement, minimum bend radius, thread compatibility, support conditions, and installation geometry. Do not install the assembly under torsion.

Ordering Notes

Select hose ID, braid count, and overall length. Every order is reviewed before fabrication. Alternate materials, special cleaning, pressure testing, tagging, material certificates, and documentation packages are available through RFQ.

Engineering Calculators & Selection Tools

• Metal Hose Pressure Derating Calculator
• Metal Hose Length & Bend Radius Calculator
• Thermal Expansion & Offset Calculator
• Velocity & Pressure Drop Calculator
• All Engineering Calculators

Use calculator outputs as preliminary selection inputs. Final assembly suitability depends on validated product pressure data, temperature, braid construction, fittings, media, movement, cycling, and installation conditions.