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What is an OPSO (SAV) and how does it work?

Category: Home & Commercial

The OPSO protects against overpressure in an LPG system. The safety device blocks the gas flow, the system goes into fault mode.

Funktion eines OPSO
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An OPSO or SAV is a safety device for LPG pressure regulators. It prevents impermissible high overpresssure.

The OverPressure Shut Off (OPSO), former name: safety shut-off valve (SAV), is usually integrated in the fitting. It protects connected consumer equipment from inadmissible high pressure. If the outlet pressure exceeds the maximum, the OPSO responds and blocks the gas supply.

A diaphragm in combination with a spring monitor the outlet pressure of the fitting. If the maximum permissible value is exceeded, a bolt releases the spindle (see video). The gas flow is blocked.

Overview thanks to visual indicator

You can see whether the safety device has responded by the visual indicator. In normal mode, it is set to green. If the OPSO responds, it switches to red.

You can find more information on the GOK website.

Author

Editors GOK Blog
The articles are written by specialist authors in the fields of LPG, fuel oil, liquid media, tank management and safety engineering, who contribute their expertise from product management, development, technical customer support, training and standardisation activities. The members of the editorial team have many years of practical experience in the planning, application and further development of technical solutions for the safe supply of LPG and liquid fuels. Several authors are actively involved in specialist committees and working groups of the DVGW, DVFG and figawa, as well as in national and European standardisation committees. The team includes, among others, experts certified in accordance with G 607 and G 608, competent persons in accordance with the TRF, and specialists who contribute to the development and evaluation of technical regulations and industry standards. In addition to providing information about GOK products and solutions, the editorial team focuses on sharing knowledge relating to safety, regulations, maintenance, operation and future technologies in the field of LPG and liquid media.

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This blog will never ask members of the public or unqualified persons to make changes to or fiddle around with technical systems themselves.

In accordance with the Industrial Safety Regulation (BetrSichV), a qualified person must take care of a system which requires monitoring.

A qualified person is someone who has the specific specialist knowledge required. This knowledge is gained by way of a professional apprenticeship, corresponding professional experience or current occupational activity.

Please note that the texts are based on information, regulations and standards for Germany. Please always check the rules and regulations in the relevant country of destination and consult specialists if necessary.