Bronze Vertical Check Valve (Screwed) - ISI Model 1037

One-way (non-return) valve for 15 mm (1/2") lines — flow pushes it open, reverse flow shuts it automatically; no handle. Spring-loaded disc design, for upward-flowing vertical lines only (e.g. above a pump). Bronze construction, Screwed BSP (IS 554) ends. Tested to 1.5 MPa shell / 0.25 MPa; up to 45°C. For water, oil. IS 778 Class-1; single-piece design.