Product search Brand Hale Hamilton (1) Product Category Filters (2) Regulators (9) Pressure (4) Spring (4) Skids & Packages (1) Charging (1) Valves (16) Check (1) (-) Drain (1) Relief (1) Shut-off Valve (13) Stop Valve (1) Product Markets Defense (3) FireFighting (17) Industrial (33) Chemical (33) Food & Beverages (33) Heating and Cooling (33) Industrial Boilers (33) Mining (33) Nuclear (33) Petrochemical (33) Pulp & Paper (33) Water & Wastewater (17) (-) Industrial Gases (1) Oil & Gas (1) Paints & Colors (33) Power Generation (1) Textile (33) Product Type Search Search Hale Hamilton Series DV4 (Internal Switch)