FIELD: process engineering.
SUBSTANCE: invention relates to water treatment. Proposed cartridge comprises water inlet and outlet, water treatment material and gave valve to shut off water flow through said cartridge. Note here that said gate valve incorporates drive. At least, part of said drive allows increasing its sizes, while gave valve allows shutting off water flow through said cartridge after preset time interval defined by aforesaid increase in drive sizes. Aforesaid drive part that increases its sizes in contact with water comprises material selected from poly amides, poly ethers and block copolymers of poly amides and poly ethers.
EFFECT: safe use of cartridges.
10 cl, 19 dwg, 1 tbl, 1 ex
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