Abstract: A hook is provided for fastening a filter bag thimble to a support member in a filter baghouse. The hook has a first eye for insertion of a tension member and a second eye through which the support member is inserted. The first eye is spaced from the second eye such that the tension member in the first eye is removable when the second eye is held by the support member.

Abstract: An improved lime slaking system including agitator means effective for mechanical comminution of particulate lime during the hydration thereof.

Abstract: A baghouse valve construction including an annular valve seat member and valve member adapted to cooperate with the same in assuming open and closed relative positions. The valve seat having a pair of annular, radially spaced resilient seal members and at least one generally rigid seal member. Retainers secure the resilient seal members in relative spaced position. The valve seat may have two generally rigid seal members. One generally rigid seal member may be adjustable relative to the position of the valve element. In a preferred form, the resilient seal members have a core composed of a first material and a tubular outer member composed of a second material.