Type “W3” Weatherhood

Free Vents

Sizes: 2, 3, 4, 6, 8, 10 and 12 inch
Body: Cast Iron
  2 and 3 inch sizes: N.P.T.
  4 to 12 inch sizes: 125 lb. ANSI F.F.
OCECO Type "W3" Weatherhoods permit the free breathing of storage tanks which contain non-volatile product or do not require internal pressure to inhibit evaporation losses. The "W3" was engineered to provide unusually high flow through the expanding areas between inlet and outlet, and a gradual curvature of the body that minimizes resistance to flow and turbulence. The body is of cast iron and provided with a coarse wire mesh screen over the outlet.