NON-FREEZING WATER INTAKE Russian patent published in 1995 - IPC

Abstract RU 2031674 C1

FIELD: fire extinguishing facilities. SUBSTANCE: water intake duct is made in form of row of series-connected sections of vertically installed shutoff members with check valve built in at outlet and arranged in water basin below freezing zone. This prevents penetration of moist air and plugging of water intake riser with ice. To restore serviceability of water intake after taking of required amount of water, reverse flow valve is installed between inlet and outlet of check valve. EFFECT: enhanced reliability of operation. 4 cl, 5 dwg

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RU 2 031 674 C1

Authors

Demin V.P.

Kucherov N.V.

Khramov V.V.

Dates

1995-03-27—Published

1992-08-24—Filed