May I ask, for the safety valve at the end, do the values DN100 25 refer to the inlet or the outlet?
Thread Content
May I ask, for the safety valve at the end, do the values DN100 25 refer to the inlet or the outlet?
The nameplate states that the nominal diameter is 100 and the flow channel diameter is 65; what exactly is this flow channel diameter?
Flow channel area: refers to the minimum cross-sectional area of the flow channel between the inlet end of the valve disc and the sealing surface of the closing element, and is used to calculate the theoretical displacement in the absence of any resistance effects. Channel diameter: The diameter applied to the channel area. If only size is considered, the required channel diameter still needs to be calculated according to the corresponding standards and specifications ； By selecting the nominal diameter of the inlet and outlet for the safety valve based on the channel diameter, the size of the safety valve is determined.
DN100 PN2.5MPa refers to the nominal diameter and nominal pressure of the flanges at both ends of the safety valve.
It refers to the inlet; when the safety valve activates, it opens to relieve pressure.
1. The flow channel diameter of a safety valve is the diameter value corresponding to the flow channel area. 2. The flow area of a safety valve refers to: \"the minimum cross-sectional area of the flow path from the inlet end of the valve to the sealing surface of the closing element, which is used to calculate the theoretical flow rate in the absence of any resistance effects.\" ” 3. For detailed information on safety valve issues, it is recommended to refer to the relevant provisions of TSG ZF001-2006, \"Regulations on Safety Technical Supervision of Safety Valves\". For reference!
It refers to the entrance. The commonly used safety valves are A47 and A48. For the same diameter (for example, 50), the difference between these two models lies in their appearance: the outlet of the A47 valve is also DN50, while the outlet of the A48 valve is DN65 (one size larger than the inlet flange). The medium for A47 is generally water, while the medium for A48 is generally gas. But it’s not absolute. For reference only! :lol