SAFE SHEAR® Burst Discs In Spacecraft and Satellites

Technetics SAFE SHEAR® burst discs protect those engaged in Human Spaceflight, spacecraft traveling to Mars and the satellites that encircle the earth.

Orange Belleville Rupture Disc from side

SAFE-SHEAR™ Belleville Burst Disc


SAFE-SHEAR™ Belleville Burst Disc


Technetics Group will design, manufacture, and test a precision burst disc assembly for your application.  Our burst discs are capable of precise and reliable burst settings from low pressures or vacuum (1 psi pressure differential), up to 10,000 psi.  All this while maintaining up to 1% full-scale precision and infinitesimal leakage, regardless of infinite pressure and temperature cycles, dynamic environments, and harsh media.

Precision Burst Discs
The SAFE-SHEAR™ Burst Disc is designed to set and verify exact rupture pressure in a non-destructive test.
The BELLEVILLE spring snap-over trigger mechanism relies on a proprietary solution to achieve extreme accuracy. Diaphragm thickness resists 2 to 3 times the burst set pressure, and is capable of infinite cycling without degradation to fatigue. Cycling may be up to 98% of set burst pressure without altering performance.
It has been demonstrated that Belleville type burst discs are one order of magnitude more accurate than Frangible type burst discs.


Features & Benefits


Features:
  • Materials: Aluminum, Stainless, Titanium, Inconels & Superalloys, PTFE
  • Media: Compatible With Jet & Rocket Fuels, Oxidizers, other Harsh Fluids
  • Mounting: Flange, weld to tube, AS5202 threaded, custom
  • Reverse Pressure Protection: full reverse, cycling
  • Shock: Pyrotechnic, Operational & Crash Safety (call for details)
  • Vibration: Launch, Abort, Ground, Runway, high to low frequency (call for details)
  • Mass: Variable, based on usage
  • Tested millions of cycles without failure or setting creep, up to 95% of the rupture
  • Qualification: Units have been tested and qualified to various RTCA DO-160, MIL requirements




Aerospace Applications


  • Human Spaceflight | International Space Station & Orion
  • Pedigree | Cassini Spacecraft, Mars Global Surveyor, Hubble Space Telescope, Gravity Probe B, Spitzer Space Telescope, Wide-Field Infrared Survey Explorer, Bell Boeing V-22 Osprey, Embraer KC-390 Millennium
  • Orbital Cryogenic Propellant Refueling | NASA ISS RRM3
  • Cryogenic Fluid Management
    • LH2 | −253 °C (−423.4 °F; 20.1 K)
    • LOx Oxidizer | −183 °C (−297.4 °F; 90.1 K)
    • Xenon Coolant | -271 °C (-456 °F; 1.8 K) , Methane, etc.
    • Boil-off / Leakage less than 1.00×10-9 standard cubic centimeters per second (sccs)
  • Liquid Fuel Management
    • RP-1 Kerosene, Hydrazine Nitrogen Tetroxide (NTO)
    • Jet Fuels


SPEAK WITH A SPECIALIST

Have questions? A Technetics Group product specialist will get back to you to shortly.


Specifications




Resources

Pressure Relief Valves


Pressure Relief Valves


Pressure relief valves from Technetics Group are designed to protect your pressure vessels, systems and components. Our engineers will tailor overpressure solutions to the specifications you require.

As with each of our solutions, the pressure relief valve solutions that we develop are custom-engineered for your critical applications. We have produced relief and check valves for since the time of the Apollo and Gemini  programs and more recently for the International Space Station and the Orion Spacecraft. Our pressure relief valves are suited for extreme conditions such as high vacuum, high pressure, cryogenic and high temperatures. Technetics Group provides full analytical, design and test support.

When used in conjunction with one of our SAFE-SHEAR™ Burst Discs, these valves prevent the loss of all media allowing pressure-dependent mechanisms to continue to function. We install our  SAFE-SHEAR™ Burst Discs and Pressure Relef Valves in the same housing thereby providing space and weight savings of 50 to 80% over other redundant systems.


Features & Benefits


Features:
  • Full Flow: Designs for Over 20,000 scfm N2, or mixed phase fluids
  • Materials: Aluminum, Stainless, Titanium, Inconels & Superalloys, PTFE
  • Media: Compatible With Jet & Rocket Fuels, Oxidizers, other Harsh Fluids
  • Mounting: Flange, weld to tube, AS5202 threaded, custom
  • Reverse Pressure Protection: full reverse, cycling
  • Shock: Pyrotechnic, Operational & Crash Safety (call for details)
  • Vibration: Launch, Abort, Ground, Runway, high to low frequency (call for details)
  • Mass: Variable, based on usage
  • Qualification: Units have been tested and qualified to various RTCA DO-160, MIL requirements


SPEAK WITH A SPECIALIST

Have questions? A Technetics Group product specialist will get back to you to shortly.


Specifications




Resources

Template Resource

Click here to add your own text