Gas Transfer Stainless Steel Hose

Engineered for Safe,Reliable,and Pure Gas Conveyance

A Gas Transfer Stainless Steel Hose is a specialized flexible conduit designed for the safe and efficient transfer of industrial,medical,and specialty gases.Engineered to maintain purity,prevent leakage,and withstand the specific demands of gaseous media,it is a critical component in systems where gas integrity,safety,and precise delivery are paramount.

Core Construction&Purity Features

High-Purity Inner Core:

Material:Typically constructed from 316L or 304L stainless steel,chosen for its low carbon content and excellent corrosion resistance to prevent contamination.

Corrugation:Usually annular corrugated for a smooth bore that minimizes turbulence and pressure drop,and reduces areas where contaminants could lodge.

Surface Finish:Often available with Electropolished(EP)interior for ultra-high-purity(UHP)applications.This process creates a mirror-smooth,passive surface that minimizes outgassing,particulate adhesion,and moisture retention.

Reinforcement&Protection:

Braiding:Single or double stainless steel braid for pressure reinforcement and protection.For high-purity systems,the braid may be covered with a smooth PVC or PUR jacket to prevent external contamination from shedding.

Unbraided Versions:Used for low-pressure or pure thermal expansion applications where maximum flexibility is needed and the braid's interstitial spaces are undesirable.

Clean,Secure End Connections:

Fitting Types:Utilize VCR®,VCO®,ISO-KF(NW),or weld fittings common in high-integrity gas systems.These provide helium-leak-tight,metal-gasket seals(e.g.,nickel or silver)to ensure zero leakage.

Standard Threads:Also available with NPT,BSP,or SAE fittings for less critical industrial gas applications(e.g.,instrument air,nitrogen).

Assembly:Fittings are welded or precision-attached in a clean environment to prevent internal contamination.

Critical Performance Attributes for Gas Service

Ultra-Low Permeability:Stainless steel construction ensures zero gas permeation,unlike polymer hoses,maintaining gas composition and purity.

Leak-Tight Integrity:Designed and tested to very low leak rates,crucial for safety,cost savings,and environmental compliance.

Contamination Control:The inert,smooth interior prevents absorption,adsorption,and particle generation that could degrade gas quality,essential for semiconductor manufacturing,analytical labs,and medical gases.

Static Dissipation:The conductive metal construction safely dissipates static electricity,a critical safety feature for flammable or pyrophoric gases.

Fire Resistance:Inherently non-flammable,providing a crucial safety margin in case of fire.

Specialized Gas Applications

Semiconductor Fabrication(FAB):Transfer of ultra-high-purity(UHP)carrier and process gases(e.g.,Arsine,Phosphine,Silane)to tools.

Analytical&Laboratory:Connections for GC,HPLC,Mass Spectrometers,and calibration gas supplies where purity is non-negotiable.

Medical&Pharmaceutical:For medical gas lines(oxygen,nitrous oxide,medical air)within facilities and on equipment,requiring clean,safe,and compliant(e.g.,USP Class VI)components.

Industrial&Specialty Gases:Handling argon,nitrogen,hydrogen,helium,chlorine,ammonia,and flammable gases(acetylene,propane)in cylinder filling,distribution,and process applications.

Welding&Cutting:Flexible lines for MIG/TIG welding gas supply and plasma cutting systems.

Aerospace&Defense:Fuel vapor,inerting gas,and pneumatic system connections.

Selection&Specification Guide

Selecting the correct hose requires rigorous definition:

Gas Type&Purity Class:Define the specific gas and its required purity level(e.g.,industrial,instrument,UHP).This dictates material,finish,and fitting choices.

Pressure&Vacuum Rating:Maximum working pressure and any full vacuum requirements.

Safety&Compliance:For toxic,flammable,or oxidizing gases,verify hose and fittings are rated and certified for the service.Compliance with standards like SEMI,CGA,ISO,or FDA may be required.

Cleanliness&Certification:For critical applications,specify particle count and outgassing certifications,along with cleanroom packing.

Environment:Consider external exposure to chemicals,UV,or abrasion that may necessitate an external protective jacket.