Germany olhydraulik valve olhydraulik model olhydraulik price

olhydraulik valves are special valves where the closing member remains normally closed under external force. When the pressure of the medium in the equipment or pipeline rises above the specified value, the valve prevents the pressure from exceeding the limit by discharging the medium to the outside of the system. Safety valves belong to the category of automatic valves and are mainly used on boilers, pressure vessels, and pipelines to control pressure within specified limits, playing a crucial role in protecting personal safety and equipment operation. Note: Safety valves must undergo pressure testing before use.

olhydraulik valve functions and applications

Safety valves provide safety protection in systems. When system pressure exceeds the specified value, the safety valve opens to discharge part of the gas/fluid from the system into the atmosphere or outside the pipeline, ensuring that system pressure does not exceed the allowable limit, thereby preventing accidents caused by excessive pressure.

olhydraulik valve assembly precautions

Cleaned components must be stored in a sealed condition for installation. The installation process requires the following: 1) The installation workshop must be kept clean, or a temporary clean area must be established, for example, using newly purchased striped tarpaulins or plastic films, to prevent dust from entering during installation. 2) Assembly personnel must wear clean pure cotton work uniforms and pure cotton caps, with no hair exposed. They must wear clean shoes and latex gloves, and ensure degreasing. 3) Tools used for assembly must be degreased and cleaned before assembly to ensure cleanliness.

olhydraulik valve classification

Safety valves are mainly divided into two categories: spring-loaded and lever-operated. In spring-loaded types, the sealing between the valve disc and valve seat relies on the force of the spring. Lever-operated types rely on the force of a lever and weight. To meet high-capacity requirements, there is also a pulse-type safety valve, also known as a pilot-operated safety valve, which consists of a main safety valve and an auxiliary valve. When the medium pressure in the pipeline exceeds the specified value, the auxiliary valve opens first, allowing the medium to enter the main safety valve through the guide tube, opening the main safety valve and reducing the increased medium pressure. The discharge capacity of a safety valve is determined by the diameter of the valve seat and the opening height of the valve disc. It can also be divided into two types: micro-lift type, where the opening height is (1/20) to (1/40) of the inner diameter of the valve seat, and full-lift type, where it is (1/3) to (1/4). Additionally, depending on usage requirements, there are closed and open types. Closed types prevent the discharged medium from leaking out, directing it entirely through the specified outlet, and are generally used for toxic and corrosive media. Open types are generally used for non-toxic or non-corrosive media.

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