Thermal Shut-off Valve (TSV) - 2 Pages

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Thermal Shut-off Valve (TSV)

Catalog excerpts

Thermal Shut-off Valve U.S. Patent No. 5,826,790 Protect Instrumentation and Personnel  Protects analyzers and personnel 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.  Fully mechanical  Visual trip indication  Optional contact for remote alarm  Flow shut down in less than 5 seconds Causes of High Temperature  Loss of cooling water  Insufficient cooling water pressure or flow  High cooling water temperature  High sample flow rate  Ruptured coil in the sample cooler  Fouled or plugged sample cooler 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.

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SPECIFICATIONS Pressure Rating �����������������������������������������������������������������������������������������������������������������������������������������4400 psi (303 bar) Downstream Pressure Rating ��������������������������������������������������������������������������������������������������������������������250 psi (17 bar)1 Temperature Rating ������������������������������������������������������������������������������������������������������������������������������������������ 250°F (121°C) Trip Temperature...

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