Nuke BOV50c blow off valve 50mm Here it is, Nuke's BOV50c which is the second generation dump valve from Nuke. The dump valve is the fastest on the market with its unmatched flow and with its new membrane it seals better than the old models. The dump valve uses the same flanges as previous models, which makes this directly interchangeable with your old Nuke dump valve but with a higher performance. With its new design, the Nuke BOV50C has a surface for the valve that slides easier than before with reduced friction and can handle from 250-1600hp! ~ Specifications: Internal design 50mm valve with reinforced membrane. Vacuum port thread 1/4" BSPP Preset Spring Installed -0.53 to -0.65 BAR (-16 to -19 inHg) Height 78.7 mm (3.09") * Diameter 81.6 mm (3.21") * Weight 435 g (15.34 oz) * Includes flange + V-band for mounting Included in the kit: 1 x dump valve, BOV50C 1 x Pre-installed Blue Spring (-0.53 to -0.65 BAR) 1 x Aluminum V-Band clamp for 60 mm flanges 1 x Aluminum 60mm V-Band flange