The Reliable & long-term operation of the Steam & water analysis system depends upon the efficiency of the sample conditioning components for which precise pressure, flow, and temperature control is must essential.
Excessively hot samples can cause damage to expensive and sensitive sample conditioning components of the process analyzer. The auto shut-off valve is mainly used in Steam Water Analysis System ( SWAS ) in a power plant.
The AXIS offers a very reliable Auto shut off valve called ASV1. This is functioning on directly exposed to the sample media via thermal expansion principle with using wetted media. ASV1 is a self – reliant, fully mechanical device that required no external source of electricity or pneumatic or hydraulic. The AXIS ASV1 build with 50°C ± 2°C set to shut off temperature. After shutting off ASV1, it must be reopened by pressing the manual reset button which ensures the no flow resumes and safety of the upset component have been amended.
The AXIS ASV1 is constructed with SS 316 and other wetted parts are compatible with boiler water and steam. ASV1 is mainly used in downstream of the pressure reducing component and upstream of analyzers, flow meters, and other low-pressure devices. After shutting off the upstream side of the ASV1 will be opened to the full source pressure.