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LaMOT Rupture Discs
Isolation Seal (IS) Rupture Disc
Isolation Seal (IS) Rupture Disc
The Isolation Seal (IS) rupture disc is a flat composite rupture disc that installs between standard bore 150# ASME bolted flanges. The recommended operating pressure is 50% of the rupture disc’s minimum burst pressure.
IS discs are typically used for:
Low pressure relief of atmospheric storage tanks.
Downstream relief valve manifold isolation.
A corrosion barrier.
An environmental seal.
The IS is available in two designs:
IS-1 – Bursts in one direction only.
IS-2 – Bursts in an identical rating in either positive or vacuum direction.
The IS disc includes a high-visibility flow direction tag for easy installation, correct orientation, and at-a-glance inspection. All IS rupture discs 1″ (25 mm) nominal size and above include a flow direction tag.
Seating configuration: Flat seat, no holder required
Burst pressure range: See table 7, Minimum/Maximum Burst Pressures for IS
Rupture Discs.
Table 2A – Burst Tolerance and Maximum Recommended Operating
Pressures.
Available materials:
Top section – 316SS, alloy 600, alloy 400, nickel
Seal – Fluoropolymer or polyethylene
Includes a non-asbestos gasket on each side of the disc for easy handling
and installation.
Manufacturing range: See table 2, Manufacturing Ranges
Special and reduced manufacturing ranges are available upon request.
Available in a variety of materials to resist highly corrosive media and atmospheric conditions.
Specified and MIN/MAX Rating Types are also available.