May I ask, what is the difference between the mechanical seal flushing plans Plan61 and Plan62?
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As the title says! O(∩_∩)O Thank you!
In my personal opinion, there is no substantial difference; it’s called PLAN61 when blocking. When connected to steam, water, or air, it is called PLAN62. Please offer expert criticism.
61 is reserved for 62; when not in use, the interface is sealed at 61, and when water, steam, or nitrogen is connected, it is at 62
The API is still the better option – it provides a hole, offering two options depending on whether to use it or not
That’s true; there is a difference between those with plugs and those without, haha. ;P
Thanks for sharing, coming in to learn a bit*
API Std 682 states that in flushing scheme 61, the interface on the atmospheric side is plugged with a plug for use by the user in other situations. In flushing protocol 61, all interfaces must be plugged with plastic plugs during transportation. During installation, the user should connect a pipe to the drain port to direct any leaks to a designated collection point. If the user might use these interfaces in the future, this flushing scheme can be specified. In flushing scheme 62, the quench fluid is delivered from an external fluid source to the sealed atmospheric side. The quenching fluid can be low-pressure steam, nitrogen, or clean water. This flushing scheme is primarily used in auxiliary systems with single-face sealing; its purpose is to remove oxides and prevent coking (in situations involving high-temperature hydrocarbon media), as well as to wash away harmful substances accumulated around the moving seal components. The best results are achieved when flushing scheme 62 is used together with the small-gap throttle bushing or suppression device in the sealing end cover. The throttle bushing is not only used to contain the quench fluid in the sealed end cover; it also protects operators from injury when high-temperature quench fluids are used. The size of the drain outlet should be larger than that of the quench fluid inlet, ensuring that the quench fluid can be completely drained.