Split removable flange insulation covers
Remove the cover separately and regain bolt access.
Two half-shells with end collars and a side split
Specifications and thermal reference →Piping & Fitting Covers
Removable Flange Insulation Covers
For indoor steam or hot-water bolted joints that need periodic access. Start with the flange pair dimensions and the clearance around the joint.
Compare designs, materials and expected results
Wraparound flange insulation blankets
Use an overlapping closure that can be reached from the available working side.
Flexible band with a longitudinal overlap and shaped pipe exits
Specifications and thermal reference →Proposed design for quotation
Start with a split wrap, removable closures and openings sized for the pipe or adjoining insulation. Agree seam position and the access needed for bolt work.
- Construction options
- Compare coated glass-fibre facings and fibrous insulation. A nominal 25 mm core can be priced as a comparison option if the available space and thermal requirement support it.
- Dimensions to supply
- Record flange outside diameter, overall joint width including bolt projection, adjoining insulation diameter and radial clearance.
- Acceptance checks
- Agree the installed envelope and removal path. Confirm that the design suits the site's inspection and leak-detection requirements before covering the joint.
The material and thickness above are starting points for supplier review. The written quote specifies the agreed construction and operating limits. See the published hot-service specification example.
One-piece inquiries are welcome. The quotation confirms feasible quantity after design and supplier review. View quotation and dispatch terms →
Cover removed for bolt access
What to measure before requesting a quote
Flange outside diameter, face-to-face envelope, and bolt projection on both sides.
Keep accessible · Fasteners, the joint inspection area, and the removal path.
TECHNICAL SELECTION
Decisions to make before specifying a cover
Confirm the equipment and operating requirements below before the supplier proposes the final construction and operating limits.
- Equipment type, size and the datum used for each dimension
- One unit system for the whole item schedule, and a revision identifier per drawing
- Operating and maximum temperature recorded separately, with the working medium
- Service access: handwheels, actuators, nameplates, inspection points and removal direction
- Existing insulation, supports and adjacent equipment that limit the removable envelope
- Any buyer-specified standard or documentation requirement, listed as a question rather than a claim
Specifications for a written quote
Flange pair dimensions
Nominal size and class, actual outside diameter, joint width including both flanges, and protruding studs or nuts.
Record normal and peak operating temperatures, their units, and the environment around the equipment.
Published industry reference
The data sheet lists DN15–DN400 for its flange jacket range. Record actual dimensions when specifying the fit.
Spirax Sarco lists maximum equipment surface temperatures of 240 °C for its standard variant and 425 °C for its high-temperature variant. These figures apply to the listed configurations.
The data sheet lists silicone-coated glass fibre fabric and mineral fibre insulation. Use these as comparison points when reviewing supplier material data.
Spirax Sarco insulation jacket data sheet, TI-P225-07
TERCC construction and ratings are confirmed for each proposed assembly in the written quotation.
See what a written quotation covers →
Compare cover designs
Have a drawing for this item?
Send it with a short description. Detailed technical fields can be completed later during the review.