Product search Brand (-) Hale Hamilton (1) Product Category Filters (1) Pumps (12) Gear (5) Progressing Cavity (2) Three Screw (5) Regulators (9) Pressure (5) Spring (4) Valves (9) (-) Check (1) Relief (1) Shut-off Valve (6) Stop Valve (1) Product Markets Defense (1) (-) Industrial (1) Industrial Gases (1) Oil & Gas (1) Product Type Search Search Hale Hamilton NRS1 & NRS2 - High-Pressure non-return valves