Fire-Safe Vent Valves Fig 661 & 641

Request a Quote

Valves designed for airtight and watertight closures as well as fire dampers. The 641/661 valves are built to BUSHIP Drawing #804-1749102/1749103 Rev. C. 316 stainless steel body and disc, Inconel upper stem, 17-4 lower stem, silicone/intumescent seat. Size Range 641 2-1/2” to 30”; R2.5 – R36. Size Range 661 7” x 3” to 30” x 20”; K31 -K41. Pressure Rating 15 PSI working, 30 PSI test.

Request a quote

Please complete this form and we will respond promptly.

610.647.3810