U Style Syphons GNW Instrumentation Sale! from 1500 /per Thread 1/4" BSP Male to 1/4" BSP Male 3/8" BSP Male to 3/8" BSP Male 1/2" BSP Male to 1/2" BSP Male Material Mild Steel Brass 304 Stainless Steel Qty. Add to Cart This item is currently on backorder but you can still purchase it now and we'll ship as soon as more become available. A range of standard "U" syphons to help reduce the temperature of the medium before entering the gauge. Available in mild steel (standard), brass or SS304 stainless steel. Tweet