Description
The LPLV is similar to the LPL rupture disc, but will withstand full vacuum.
It is a composite rupture disc, built with a fluoropolymer outlet liner, a metal vacuum support, a metal top section and a process-side fluoropolymer seal. Using fluoropolymer on both sides (inlet and outlet) helps protect the vacuum support and top section from corrosive media and reduces buildup. The composite rupture disc is recommended for use in systems with a maximum operating pressure of up to 80% of the disc's marked burst pressure.
It is ideal for primary and secondary system relief protection, and an optional non-fragmenting design provides an effective means of fugitive emissions control when used to isolate a safety relief valve.
The LPLV includes a high-visibility flow direction tag for easy installation, correct orientation and quick inspection. All LPLV rupture discs of 1″ (25 mm) nominal size and larger include a flow direction tag.
Our seven-hole pattern
Our composite rupture discs are designed with a seven-hole pattern at the apex of the rupture disc dome and six radiating pre-cut sections. Used together with a non-metallic or fluoropolymer seal, these elements prevent fragmentation upon rupture.
The seven-hole pattern allows construction with heavier materials, resulting in a higher maximum recommended operating ratio of up to 80%.
Nominal sizes: 1″-12″ (25-300 mm)
Seat configuration: 30° angled seat
Ideal for fully threaded, insert and union rupture disc holders.
Burst pressure range: 8-1,440 psig (0.552-99.3 barg)
Table 5 – Minimum/maximum burst pressures for preformed composite rupture discs at 72˚ F (22˚ C).
Table 2A – Burst tolerances and maximum recommended operating pressures.
Operating temperature: Up to 1,000°F (538°C)
Depends on seal materials – see Table 3, Maximum Temperature for Rupture Disc Materials, Liners and Coatings.
Manufacturing range: See Table 2, Manufacturing Ranges
Special and reduced manufacturing ranges are available upon request.
Available in a variety of materials to withstand highly corrosive media and atmospheric conditions.
Specified rating and MIN/MAX rating types are also available.
We manufacture options and accessories to ensure our rupture discs perform in any environment. Consult a representative if you are not sure which one you need.
The LPLV design allows the use of highly corrosion-resistant sealing materials, such as fluoropolymer or exotic metallic materials. The rupture disc's burst rating is determined by the slotted metal top section, so the seal or liner can be made of thin corrosion-resistant materials while still providing a wide range of burst pressures.
Cleaning
This disc is available cleaned for oxygen or chlorine service.
Corrosion resistance
We provide corrosion-resistant fluoropolymer disc liners and coatings when needed. Other protective materials are available upon request.
Dent protectors
Protect your rupture disc with a dent protector if the outlet dome (vent side) is exposed or at risk of damage.
Gaskets
Get a tight seal, even on scratched or pitted disc holders, by installing a gasket.
Handling holders
Improper handling during installation can affect your disc's burst pressure setting. Use handling holders when installing thin or delicate rupture discs to prevent damage.
Protective rings
Prevent damage to fragile rupture discs and delicate liners from foreign material in the seating area by adding a protective ring.
Vacuum supports
Protect your rupture disc from vacuum conditions with a vacuum support. Consult your LaMOT representative if you need protection against back pressure above 14.7 psig (1.01 barg).
When ordering a rupture disc that will face vacuum conditions, please specify the exact conditions.
We manufacture our vacuum supports to be an integral part of the rupture disc.
Vacuum supports are permanently attached to ensure proper installation.