The standard features of our products are designed to cater to various industries such as coffee, juice, smoothie bars, and more. The best part is that no plumbing is required! The STS1300 model comes with a key feature of a manual control steam valve. On the other hand, the STA1300 model has a key feature of an automatic temperature-controlled steam valve. Lastly, the STP1800 model is equipped with two manual steam valves and one hot water valve as its key features. When it comes to construction and performance, we use all US standard hardware and brass flare fittings for durability. Additionally, our products are equipped with a vacuum valve that prevents milk from entering the boiler.