The TLV LA21 stainless steel automatic air vent for steam is available here, this product is only manufactured in 1/2" (15mm) NB currently. The LA21 is a compact, all stainless steel air vent with female BSPT taper threaded ends which uses thermostatic X-element technology to automatically vent hot air until “close-to-steam” temperature.
LA21 air vents have a hardened stainless steel seat, compact design with a high venting capacity (2000l/min) and should only be installed vertically. Designed to withstand water hammer or superheated steam and be easy to clean & maintain. 21 bar pressure rated, 0.1 bar minimum operating pressure.
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