Alfa Laval Unique SeatClean double seat mixproof valve, DN 65 / 63.5 mm. 1.4404 (316L), ISO welding ends, EPDM seals, pneumatic normally closed. Rated 10 bar and -5 °C to +125 °C.
Double block-and-bleed duty at intersections in matrix piped systems, carrying two products through one valve without cross-contamination. The space between the two plug seals is a leakage chamber at atmospheric pressure with a bottom outlet. Internal surface Ra ≤ 1.6 µm, external blasted.
The item master records this only as “Unique Mixproof Valves”. Alfa Laval’s catalogue puts 9613000986 in the Unique SeatClean table, upper and lower seat lift, no SpiralClean, balanced lower plug, at the 63.5 mm column.
