Patent ID: 9579594
Date: 2017-02-28
CPC Classifications: B01D,C02F

Claim:
1. An external filter seal comprising a lid that is rotary-mounted to a filter container base wherein the lid has a body with at least two stub pipes and an internal part attached to the body, wherein formed in the internal part are circulation ducts positioned as an extension of the at least two stub pipes in an opened position, at least one bypass duct connecting the at least two stub pipes in a closed position, and sealing members preventing leaks from the ducts installed between the internal parts and the body, wherein the internal part is attached to the body using a rotary bayonet mount by rotating to the closed position in which the at least two stub pipes are connected by the at least one bypass duct, and the body together with the attached internal part is attached to the filter container base using a rotate-and-lock bayonet mount, where in the closed position the internal part is attached to the filter container base in a stationary manner using a longitudinal head joint formed on joined elements, the joined elements comprising the internal part and the filter container base ( 10 , 100 ), and the changing to opened position occurs by rotating the body in the rotate-and-lock bayonet mount; wherein on a perimeter of the internal part, there is an abutment flange of diameter greater than an internal diameter of the filter container base, and the abutment flange has mounting notches for lower locking lugs formed inside the body.