The Dial 94195 straight needle valve is designed to control or stop water flow in evaporative coolers, humidifiers, and other HVAC systems. Its angled needle design allows for easy installation in tight spaces and provides precise water flow adjustments for maintenance or system optimization. The valve features a 1/4-inch compression fitting for connecting to the water line and a 1/8-inch male pipe thread for attaching to other fittings or equipment, making it a compact and reliable solution for water-based HVAC setups.