Removable insulation covers (jackets)

Removable industrial insulation covers hot equipment while allowing the insulation to be taken off and refitted for maintenance. Buyers also call these systems insulation jackets or blankets. Inzonex manufactures a fitted modular alternative for valves, pumps, heat exchangers and other equipment, with snap-button fasteners, magnets where applicable and a replaceable insulation core.

Where it belongs

When this is the right system

Use removable insulation where valves, flanges, strainers, pumps or exchanger heads need regular inspection, cleaning or repair. Specify the sections that must come off, the clearances around controls and the refitting sequence. Inzonex separates module removal for equipment access from the functional zipper used to clean or replace the insulation core.

Standard: ASTM C1695-22 addresses materials and fabrication for flexible removable/reusable blanket insulation in hot service up to 538 °C, with separate application requirements. It is not certification of an individual product or a universal temperature rating. Specify the complete assembly, operating duty and applicable project requirements.

The computed case

Reference calculation: DN100 pipe at 250 °C

The table below models one metre of DN100 pipe with a 250 °C surface and 50 mm insulation. Its reference bare loss is 826 W; the E-glass needle-mat scenario gives 106 W after insulation and a 36 °C outer surface. Under the stated fuel-price, operating-hours and efficiency assumptions, the calculated saving is €351 per metre per year. These are modelled pipe results, not measured valve performance or a quotation for a particular installation.

Material	λ W/m·K	Loss W/m	Surface	Saving €/m·yr	t CO2/m·yr
E-glass needle mat	0.050	106	36 °C	€351	1.3
Silica needle mat / fabric	0.055	117	37 °C	€346	1.3
Stone wool (mineral wool)	0.052	112	37 °C	€348	1.3
Aerogel blanket	0.027	61	29 °C	€373	1.4

DN100 pipe at 250 °C, 50 mm insulation, per metre of pipe; bare loss 826 W/m. λ at mean temperature; € and CO2 per metre·year at €0.05/kWh, 8000 h, 82% efficiency. Method: ASTM C680 simplified (h=10).

Use this reference in a specification or calculation

Follow the relevant next step below. Keep the duty, units and assumptions with any result; verify the exact product and complete assembly before specification.

Insulation bags vs engineered removable covers — Compare both options under the same stated duty and assumptions.
Steam Valves & Distribution Headers: Maintenance Access & Heat Loss — Plan repeat access to valves and headers alongside heat-loss reduction.
Boiler Doors & Manways: Maintenance Access & Heat Loss — Check the access task for doors and manways.
Removable covers vs fixed lagging — Compare maintenance access as well as thermal performance.
ASTM C1695 — removable insulation covers — Read the fabrication-standard scope; a material rating alone does not qualify the assembly.

FAQ

Questions on this topic

What is removable industrial insulation?

When should I use removable insulation covers?

Which standard governs it?

ASTM C1695-22 addresses materials and fabrication for flexible removable/reusable blanket insulation in hot service up to 538 °C, with separate application requirements. It is not certification of an individual product or a universal temperature rating. Specify the complete assembly, operating duty and applicable project requirements.

Inzonex: Some materials in this database are rated to 1000 °C or above. Standard Inzonex projects usually address duties up to +600 °C; the allowable temperature of the complete engineered assembly must be confirmed for the specific application.