back seating a valve

Russian translation: открытие клапана до герметизации сальника

10:33 Sep 8, 2011

English to Russian translations [PRO]
Tech/Engineering - Mechanics / Mech Engineering

English term or phrase: back seating a valve

What does back seating a valve mean?

There are several types of globe valves that have a seating area that is machined on the valve stem above the top of the valve disc. By back seating a valve means to keep fluid pressure off the valve packing because of a packing leak by using the back seat on the valve stem to rest against the top part of the valve bonnet. It is possible, but highly not recommended; that the packing can be replaced while the valve is back seated. This procedure is not recommended because of the unknown condition of the back seat surface. Certain valves cannot be back seated, so know which ones they are.

Mikola KudoZ activity Questions: 1071 (none open) (21 closed without grading) Answers: 21 Russian Federation
Local time: 19:59

Russian translation:открытие клапана до герметизации сальника

Explanation:
back seat - это верхнее седло клапана, которое расположено в крышке.
При полном открытии клапана плунжер/тарелка поднимается до верхнего седла и садится на него, герметизируя тем самым сальник шпинделя/штока (и теперь можно обслуживать сальник).
Если этого седла нет, то выполнить back seating нельзя, конечно

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Note added at 24 мин (2011-09-08 10:58:21 GMT)
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или можно "Посадка на верхнее седло" - дословный вариант

Selected response from:

Enote
Local time: 19:59

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Summary of answers provided

установить клапан на задний упор

Ekaterina Mikhailova

3 +1

открытие клапана до герметизации сальника

Enote

Discussion entries: 1

Answers

5 mins confidence:

установить клапан на задний упор

Explanation:
valve back seat (мултитран) = задний упор клапана

Ekaterina Mikhailova
Russian Federation
Local time: 19:59
Works in field
Native speaker of:

Russian
PRO pts in category: 4

23 mins confidence:

peer agreement (net): +1

открытие клапана до герметизации сальника

Enote
Local time: 19:59
Specializes in field
Native speaker of: Russian
PRO pts in category: 2515

Grading comment

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