Modern Snifter Valve (set of 2) Product Price $65.00 Add to CartClick to add this item to cart. SKU: VMSM Product Description Constructed brass Bar stock. 1-1/2” Scale 1/8” NPT thread Also known as drifting valve. Allows vent path for cylinders while locomotive is coasting with the throttle closed See also different:Specialty Valves<< return to products