pressure-reducing russian

• реду́ктор

  reduction gear, gearbox, reducer, speed reducer

  pressure regulator, pressure-reducing valve, regulator

Examples

• Насос, просаживающий давление в трубе, надо заменить.

  The pump that is reducing the pressure in the pipe needs to be replaced.

• Прибор, разрежающий атмосферу в камере, работал непрерывно.

  The device that was reducing the air pressure in the chamber operated continuously.

• Насос, разрежавший воздух в трубке, вдруг сломался.

  The pump that was reducing the air pressure in the tube suddenly broke down.

• Редуцирующий клапан снижает давление в системе.

  A pressure-reducing valve lowers the pressure in the system.