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Bursting disc holders + Safety and Relief valve

SITEC Bursting disc holders + bursting discs, safety valves and relief valves to protect high pressure systems against overpressure.

Specifications Bursting disc holders Safety valves Relief valves
Pressure max. 7.000 bar / 100.000 PSI max. 4.400 bar / 65.000 PSI max. 4.000 bar / 58.000 PSI

SITEC Bursting disc holders (Safety heads)

Features and advantages

  • Very simple protection against unintentional overpressures in HP systems and pilot units.
  • For category I, module A of the “PED 97/23/EC”.
  • For category IV (max. 5000 bar) on request.
  • Absolutely leak-proof – important for laboratory units.
  • Direct installation of the safety heads in all tube connections in SITEC HP valves and fittings.
  • Rupture discs are to be ordered separately.


Stainless-steel rupture discs

  • Discs on stock: flat seat discs for low pressures and angular seat models for 350 bar and above.
  • Including test certificate 3.1 according EN 10204.
  • Ordering: Complete Part No. by adding burst pressure to the basic No. 728., e.g. burst pressure 700 bar: Part No. 728.0700.
  • Important: The nominal burst pressure is based on a static pressure loading at ambient temperature with a tolerance of 
    +/– 10% up to 900 bar, above +/– 5%.
  • The maximum operating pressure should not exceed 80% of the nominal burst pressure.
  • Factors reducing the actual rupture pressure are: cyclic pressures, high temperatures, corrosion, etc.
  • Other pressures, materials (e.g. Hastelloy HC276) and safety heads for discs with flags, on request.

SITEC Safety valves

Features and advantages

  • Adjustable relief valves against unintentional overpressures in HP systems and pilot plants.
  • All safety relief valves with test certificate.
  • For category I, module A of the “PED 97/23/EC”.
  • For laboratory systems and pilot units.
  • Suitable for gases and liquids. Valves for gas service feature fine-lapped seats and will be factory preset at the desired relief pressure.
  • Soft seat in the valve with the lowest pressure range 50–700 bar.
  • Factory-preset relief pressure marked on valve body. State desired cracking pressure and service requirements (liquid, gas or vapour).
  • Precise adjustment of the cracking pressure.
  • Closing pressure = cracking pressure minus 10%.
  • Safety valves may be mounted in any position.
  • Relief valve set pressure should be 10% higher than maximum system operating pressure.
  • Materials: Stainless steels AISI 316Ti and 17-4 PH.

Options

  • Factory-sealed relief valves with test certificate.

SITEC Relief valves

Features and advantages

  • Adjustable pressure limiters in high-pressure systems.
  • Specially recommended for high-pressure systems with intense variations of flow.
  • Suitable for HP liquids like water, mineral oils, brake fluids. Mention the service fluid with the order.
  • Long service life assured by fine ground stem.
  • Easily exchangeable replaceable seat.
  • Factory-preset pressure marked on valve body. State the required cracking pressure with the order please.
  • Variable adjustment of the cracking pressure.
  • Valve body in stainless steel AISI 316Ti.
  • Free assembly positions.
  • Relief valves available at short notice.
  • Bursting disc holders for Cat I PED/2014/68/EU and Cat IV PED/2014/68/EU on request
  • Bursting disc holders + discs in other materials like Hastelloy on request
  • Factory preset and sealed relief valves with certificate