Sentry Equipment has more than 40 years experience in manufacturing sampling components and sampling systems. The company also has broad experience in compact heat exchangers and boiler blow down heat recovery systems. It products include sample coolers, pressure reducers, back pressure regulator relief valves, corrosion products samplers, thermal shut off valves, sample sequencers and conductivity resin columns, temperature control units as well as water, steam and process sampling systems for power plants. The unique proportional control systems are used throughout the world for boilers operating at pressures below 250 psig (17 barg). Sentry also offers flash tanks with heat recovery heat exchangers for boiler pressures up to 900 psig (52 barg). Sentry Equipment is located in Oconomowoc, Wis.