The HA4AS/41 pressure regulator with electric shut-off represents Hansen’s engineering excellence in MODULAR design. These robust, precision-crafted regulators excel at maintaining performance even when challenged by contaminants and viscous oils, ensuring reliable operation and tight sealing. Engineered for versatility across industrial ammonia and commercial halocarbon refrigeration applications, they deliver exceptional control in diverse environments including cold storage, food processing facilities, breweries, pharmaceutical operations, and supermarket refrigeration systems.