Blacoh’s team of engineers have recently released the SENTINEL™ line of chatterless back pressure and pressure relief valves designed to eliminate valve chatter. These valves are CNC precision machined in sizes up to 2 inches (50 millimeters) and can withstand operating pressure up to 350 psi (24.1 bar). 

Back Pressure Valves enhance the performance of pumping systems by applying a continuous back pressure to the system pump, while also acting as an anti-syphon valve. 

Pressure Relief Valves protect pumping systems from over pressure damage caused by defective equipment or blockage in the pump system line. 

Offered in a full range of options, Blacoh’s chatterless valves are in a league of their own. The union-style construction and threaded ring design provide superior sealing for maximum fluid containment. A variety of plastic and metal materials are available to meet your chemical resistance requirements. Find out more at