High Temperature Protection Valve - Sentry Equipment - #1

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ƒÞ Protects analyzers and personnel ƒÞ Fully mechanical ƒÞ Visual trip indication ƒÞ Optional contact for remote alarm ƒÞ Flow shut down in less than 5 seconds The Sentry TSV is a self-contained, mechanical device that requires no external source of electricity, air, or hydraulics. The sensor/actuator is directly exposed to the sample medium providing near instantaneous reaction to an upset. The standard trip temperature is 120°F (49°C). Other temperature settings are available upon request. The TSV provides positive closure. It must be manually reset after a trip, which ensures that sample flow is not resumed before the cause of the upset has been corrected. A red indicator readily provides visual indication of valve position. An optional switch is available to provide a signal for a remote alarm. Wetted materials are 316 stainless steel and elastomers which are compatible with boiler water and steam. Consult factory on other sample media if in doubt. The Sentry TSV should be installed downstream of the pressure reducing device and upstream of analyzers, flowmeters, and other low pressure devices. After a trip, the upstream side of the TSV will be exposed to the full source pressure. www.sentry-equip.com 13.1.1 Rev. 7 11/09 TSV Thermal shut-off valve Thermal shut-off valve U.S. Patent No. 5,826,790 Protection for Instrumentation and Personnel TSV Features Description ƒÞ Loss of cooling water ƒÞ Insufficient cooling water pressure or flow ƒÞ High cooling water temperature ƒÞ High sample flow rate ƒÞ Ruptured coil in the sample cooler ƒÞ Fouled or plugged sample cooler Causes of High Temperature