MARSTON
MARSTON
Over 40 years leader iN design and construction of bursting discs and explosion panels
MARSTON Bursting Discs

RIT is distributor of Marston equiments in Italy since 1970. With 50 years experience, Marston is a leading manufacturer of pressure relief and explosion protection devices known as bursting discs (or rupture discs) and explosion vent panels. The applications for bursting discs are as diverse as the industries that use them: safety discs, bursting discs and explosion discs for chimica, oil, gas and food as well as cryogenic and transportation are typical examples.
 
We are at your disposal to discuss different applications and to design customized solutions where the use of standard devices are not recommended.
 
Marston can call upon the wide range of technical resources including:

  • High temperature testing
  • Helium leak testing
  • CAD/CAM
  • Pressure cycling
  • Radiographic inspection
  • Laser cutting technology
 
All Marston bursting discs and explosion vent panels are designed, manufactured and tested in accordance  with relevant British or other National and International standards and a test certificate is supplied for each batch of discs. 
 
The wide range of Marston bursting discs includes:
NT / NR Conventional discs: often referred to as forward acting discs, conventional discs are ideal as a multipurpose and low cost solution in many applications.
 
NTG/NRG Conventional Grooved Discsare a forward acting disc, ideal for multi-purpose use.
A single metallic foil which has grooved lines of weakness and is designed to be non-fragmenting. It will normally withstand vacuum conditions without the aid of a vacuum support.
 
CS Composite Slotted Discsare a forward acting disc which has two membranes, ideal for a multi-purpose and low cost solution.
A load-bearing slotted metallic outer membrane and a weaker, usually fluoropolymer, seal membrane giving a non-fragmenting design. This disc is widely used for lower bursting pressures.
 
GR Graphite Discsare a forward acting disc, ideal for a multi-purpose and low cost solution.
A flat graphite disc, impregnated with a high quality resin, giving good corrosion resistance and low bursting pressures. The unique GR arrangement is designed to protect the disc from the effects of flange bolt loading. This disc fragments on rupture.
 
RBH/RBF discsare a Reverse Buckling Bursting Discs which offer extended service life, particularly within pressure cycling duties. Ideal for relief valve protection.
Usually a single foil disc which has the pressure applied to its convex side. The dome inverts and opens along a peripheral groove. It is designed to be retained by its hinge portion.

Bursting Discs 
A bursting disc is a non-reclosing device that is designed to burst or rupture at a predetermined pressure, thus relieving a dangerous build up of pressure or vacuum, protecting plant, pipework or vessels from unacceptable levels of pressure or vacuum.

Conventional Discs 
Often referred to as forward acting discs, ideal as a multipurpose and low cost solution.

Reverse Buckling Discs 
These discs offer extended service life, particularly within pressure cycling duties. Ideal for relief valve protection.

Graphite Discs 
Provide ideal low pressure protection for highly corrosive process media applications.

Explosion Vent Panels 
Designed to provide low pressure protection against the effects of dust or gas explosions. In the event of an explosion a correctly sized panel will open almost instantaneously to minimise the effects of the blast.

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