Alfa Laval Tri Clover ? Pipe Fittings GH SS 304 A3 Stainless Steel Brewing ?

Description

Alfa Laval Tri Clover ? Pipe Fittings GH SS 304 A3 Stainless Steel Beverage?. Condition is Used. Shipped with USPS Priority Mail.
I am unaware of the exact use and details of these fittings.
One pipe appears to have patent 2805837 9-12-65 stamped. Another has GH SS 304 inside a clover stamp.
Please see photos for measurements.