LPD Rupture Discs – Simple Solution for Low-Pressure Protection

donadon sdd lpd rupture discs low pressure

DonadonSDD offers LPD rupture discs that are designed to protect industrial plants from ultra low-pressure variations that can cause severe damage. The LPD rupture discs are consisting of 3 or more components parts that form a single unit disc that can be installed or directly between flanges or in holders (depending on specific application); are provided with knife-blade that brakes the PTFE layer upon contact.

Keyfeatures & technical benefits

High Certification Standards:

Our LPD rupture discs are certified to meet the highest international standards, including ATEX EX II 2 GD (CE STAMP), PER 2016 UK Statutory Instruments 2016 No 1105 (UKCA STAMP), and CU TR 032 (EAC STAMP).

Technique:

Composed of a slotted, perforated metal part, a seal membrane (usually in PTFE), a protection section, and a calibration ring with blades to improve membrane rupture

Applications:

Designed for applications that require extremely low-pressure protection (positive or negative). Ideal for protecting processing and storage tanks, atmospheric vessels, and silos with low design pressures against implosion or rupture.

Features:

Can be customised to meet a broad range of non-standard specifications and applications

Vacuum Resistance:

Specific support for vacuum and back-pressure protection are available on request.

Double way disc option:

Protects against vacuum and pressure simultaneously (even with two different set pressures).

Why Choose DonadonSDD LPD Rupture Discs?

  • Our LPD rupture discs are certified to meet the highest international safety standards, providing reliable protection for your industrial plant.
  • The discs are ideal for protecting processing and storage tanks, atmospheric vessels, and silos with low design pressures, preventing implosion or rupture.
  • The discs can be customized to meet a broad range of non-standard specifications and applications.
MATERIALSStainless steel, Alloy 201, Alloy 400, Alloy 600, Alloy 625, Alloy C276, Titanium
SEAL MEMBRANEAvailable in PTFE or PFA
DIMENSIONSFrom DN50 (2 inches) to DN300 (12 inches)
RUPTURE PRESSURE0.005 – 0,5 bar g (Depending on size and material)
TOLERANCEfrom +/- 20 % to +/- 40%
OPERATING TEMPERATUREmax 260°C (membrane in PTFE or PFA)
FRAGMENTATIONNo (membrane only)
USE IN COMBINATION WITH PSVSuitable
OPERATING MARGINCan reach up to 60% depending on service conditions.
RESISTANCE TO VACUUM PRESSUREYes, Vacuum Support Required
DOUBLE WAY DISC OPTIONAvailable, even with two different set pressures
CORROSION RESISTANCEVery Good
LININGSAvailable in PTFE and PFA
INSTALLATIONDirectly between flanges or suitable for HIA, HIP, HIF holders
RUPTURE SENSORInductive, Optical
Performance Attributes
Operation Ratio
up to 60%
Non Fragmenting
yes (membrane only)
Vacuum Resistant
yes, Vacuum Support Required
Sanitary
no
Process Media
Liquid
yes
Vapor/Gas
yes

Certifications

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Safety devices such as rupture discs and explosion venting panels are essential for modern, efficient industrial plants.

Let’s find out together which ones are ideal for you!
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