Ultibend is a highly respected New Zealand manufacturer known for premium "Sanitary" fittings, specifically for the food, dairy, and craft brewing industries.
There are currently 130 of these new valves available; The price shown is for one, Please ask about a lot discount; it may be available for 10 or more valves.
As shown in photos, the part number is 220526S50 with the S50 indicating a Silicone 50mm (2 inch) seat.
3A signifies that the valve is manufactured to conform to 3-A Sanitary Standard
These valves include a "Food Grade Silicone Seal" and are grade 304 Stainless material