2-inch drain test gen.

[snusmumric]

И ещё вопрос. Как это называется по-русски?

2-inch drain test

Контекст:

Two-inch drain test: This test is used to confirm the water supply is available to the sprinkler system riser and no major obstructions are present between the riser and the water supply. The two-inch drain is attached directly to the sprinkler system riser and is generally piped to a floor drain or through an exterior wall to the outside. To conduct this test, fully open the two inch drain valve while observing the lower pressure gage on the riser. The pressure should drop and stabilize as soon as the valve is fully open. Record this "residual" reading and close
the two-inch drain valve. The pressure gage now indicates the "static" pressure, and this value should also be recorded. The reason for recording the static pressure after performing the two-inch drain test is that the pressure indicated before the test may be artificially high due to pressure trapped in the system by check valves.

Спасибо.

[snusmumric]

Может, что-то вроде

Испытание с применением дренажного клапана (сливного крана?) диаметром 2 дюйма?

[Сергей П]

http://ru-safety.info/post/100496902380015/