Insulon Vacuum Jacketed Hose, Low Pressure, MLI, 3/4″ ID, with Outer Braid

Description

Insulon Vacuum Jacketed Hose with outer braid — 3/4″ ID, Low Pressure, MLI. Inner bore: 316/316L stainless steel, fully annealed corrugated tube. Tube stub OD: 0.750″. Minimum static bend radius (static installations): 9.41 in. Insulation: MLI variants add proprietary high-density multi-layer insulation inside the vacuum annulus, blocking convection, conduction, and radiation heat transfer for maximum thermal performance. Pressure rating: Low Pressure, rated to 43 psi at RT at room temperature (≤100°F / 38°C). MAWP decreases at elevated fluid temperatures — see derating table below.

The stainless steel outer braid is added over the standard Insulon hose vacuum jacket. It provides abrasion resistance and physical protection for use in rugged environments including:

• Truck and trailer sample lines
• Bulk gas delivery and mobile LOX, LIN, and LAr transfers
• Temporary lines routed across concrete, asphalt, or gravel
• Mobile dewar connections with frequent connect/disconnect cycles
• Any application where hoses are subject to dragging, foot traffic, or handling wear

The outer braid does not affect the inner bore size, pressure rating, insulation level, operating temperature range, or compatible fluids. It increases the outer diameter of the assembly.

Compatible Fluids for Insulon Vacuum Jacketed Hose

• Cryogenic liquids: LN2, LHe, LAr, LOX, LNG, LCH4, liquid CO2
• Hydrogen: liquid hydrogen (LH2) and gaseous hydrogen (GH2). 316/316L SS resists hydrogen embrittlement.
• Thermal fluids: glycol/water mixtures, Syltherm 800, Syltherm XLT, Dowtherm Q/J, synthetic HTFs
• High-temperature fluids: steam, hot air, exhaust gases, process heating oils
• Specialty and process gases: GN2, GHe, GAr, semiconductor process gases
• Corrosive media: optional PTFE, PFA, or FEP fluoropolymer liner available

Insulon Hose Maximum Allowable Working Pressure (MAWP) by Fluid Temperature — 3/4″ ID, Low Pressure

MAWP is constant from cryogenic temperatures through room temperature (≤100°F / 38°C). For fluid temperatures above 100°F, use the derating table below. Round UP to the next 100°F row for conservatism (e.g., a 320°F system uses the 400°F row). All assemblies are pressure tested at 1.5× MAWP per NAHAD Corrugated Metal Hose Assembly Specification Guidelines.

Insulon Hose with Outer Braid — Construction and Ordering

• Inner bore: 316/316L SS, fully annealed corrugated tube. Tube stub OD: 0.750″
• Minimum static bend radius: 9.41 in. Contact Concept Group for dynamic bend radius requirements.
• Optional fluoropolymer liner: PTFE, PFA, or FEP
• End fittings specified at order: NPT, compression, VCR/VCO, flanges (CF/ISO-KF/ANSI), tri-clamp, flared swivel nuts (CGA/JIC/AN), custom
• Hose length: 1.5 ft – 65 ft overall including end fittings. Tolerance: ±1.5″ for lengths ≤48″; ±3% for lengths >48″
• ASTM G93 Level A oxygen cleaning available on request
• Pressure test certificate available on request
• 100% functionally tested. ISO 9001:2015. Made to order in the USA. ~3 weeks ARO.