High Temperature Protection Valve0 pages

Thermal Shut-off Valve
U.S. Patent No. 5,826,790

Protect Instrumentation
and Personnel

Features

Description

t 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.

t Fully mechanical
t Visual trip indication
t Optional contact for remote alarm
t Flow shut down in less than 5 seconds

Causes of High Temperature
t Loss of cooling water
t Insufficient cooling water pressure or flow
t High cooling water temperature
t High sample flow rate
t Ruptured coil in the sample cooler
t Fouled or plugged sample cooler

www.sentry-equip.com

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.

13.1.1 Rev. 9 04/13

TSV Thermal shut-off valve

TSV