Steam Injectors

Steam injectors are used for direct heating of water or compatible liquids by introducing steam into the flow stream or at the point of use. Typical applications include tanks, wash lines, utility circuits, equipment cleaning, and process duties where direct condensation of steam into the liquid is acceptable. This category includes ADCA SI20, SI115, SI125/SI140 and Valfonta 260/280 units for steam-liquid mixing and liquid heating.

Selection should be based on steam pressure, liquid pressure, required outlet temperature, flow rate, available differential pressure, connection type, body material, and compatibility with the process medium. In steam installations, good practice includes a strainer upstream, check valves on both steam and liquid lines, condensate drainage ahead of the injector, and assessment of noise or vibration generated during steam condensation. Correct sizing helps reduce unstable mixing, water hammer, and outlet temperature fluctuations.

Available versions cover DIN-standardized configurations, pressure ratings PN16 and PN25, ISO 7 Rp and BSP threaded connections, and EN flanged ends. Materials include austenitic stainless steel, brass, EN-GJS-400-18-LT, ASTM A351 CF3M, stainless steel 316L, and carbon steel WCB. For reference, the ADCA SI115 and SI125/SI140 are PN25 units with ISO 7 Rp threaded connections, maximum operating pressure of 17 bar, and operating temperature up to 95 °C, while the ADCA SI20 is a 3/4" injector with ISO 7/1 Rp connection, maximum operating pressure of 8.5 bar, and temperature up to 180 °C. Valfonta 260 and 280 models cover sizes from 1/2" to 1-1/2"; type 260 is supplied in 316L with BSP threads, while type 280 is available in WCB or CF3M with EN flanged connections.