Abstract: An adjustable, compact and stable sump stabilizer bar is disclosed. In one embodiment, the stabilizer bar may be made from a continuous material and the bar may be unitary in form. The stabilizer bar may include a substantially planar and continuous plate, and is configured to adjustably mount components, such as shear valves, to the stabilizer bar. Tabs extend substantially perpendicular to, and in generally opposite directions from, the plate. The tabs are configured to adjustably secure the stabilizer bar to the mounting struts in a sump. A shear valve may be adjustably and stably mounted to a sump using the stabilizer bar in close-to-side-wall pipe entry applications without interference from stabilizer bar components or parts.

Abstract: A shut-off valve interactive between a sprinkler head and a riser pipe, and adapted to stop water flow in the event the sprinkler head is inadvertently broken off, includes a coupling sleeve suitably threaded to engage the sprinkler head and riser pipe, and having an annular frangible zone. A sealing member movably confined within the sleeve abuts the sprinkler head and is thereby held in a stand-by position which permits water flow. However, when the sprinkler head is broken off at the site of the frangible zone, water pressure forces the sealing member upwardly into abutment with an apertured washer, thereby stopping water flow.