Add to Cart Quick view GNB G3PSO 3" / 7.5" Vacuum Gate Valve - Stainless Steel with Pneumatic Operation GNB Was: $347.00 Was: $1,200.00 GNB Corporation G3PSO 3" / 7.5" Vacuum Gate Valve - Stainless Steel with Pneumatic Operation Opening: 3" diameter Flange: 7.5" diameter From the manufacturer: GNB gate valves have been providing... 52177 SKU: 52177 Weight: 37.00 LBS