Product search Brand Hale Hamilton (1) Product Category Actuators (32) Electric (17) Pneumatic (15) Filters (1) Pumps (152) Centrifugal (24) Crescent Internal Gear (1) Gear (14) Hose (Peristaltic) (1) Macerator (1) Progressing Cavity (31) Propeller (4) Three Screw (61) Twin Screw (15) Regulators (39) Pressure (35) Spring (4) Valves (138) (-) Check (1) Control Valve (103) Desuperheater (16) Pump protection (4) Pump protection descaling (1) Regulator (1) Relief (1) Shut-off Valve (10) Stop Valve (1) Product Markets Commercial Marine (1) Defense (3) (-) Industrial (1) Industrial Gases (1) Oil & Gas (5) Product Type Search Search Hale Hamilton NRS1 & NRS2 - High-Pressure non-return valves