BT SERIES
THERMAL SHUT-OFF VALVES
WWW.BITORQ.COM
1
OPERATIONS AND MAINTENANCE MANUAL
Models FL-BT-149X
I. OVERVIEW OF THERMAL SHUT-OFF VALVES
BI-TORQ Valve Automation automatic thermal shut-off valves are designed for flow shutoff protection in piping systems
handling flammable gasses or liquids, solvents, toxic fluids, or any other potentially dangerous media. These fire
control valves terminate flow in the event of fire, aiding in reducing fire intensity. In the event of fire, the fusible link
separates, allowing the top mounted spring pack to drive an API607 fire safe rated valve into a closed position. Fusible
links are available in a range of temperature settings. The thermal shut-off valves also are available in a fail open
position, ideal for a sprinkler system in the event of a fire.
The thermal shut-off valves you have received has been assembled and tested at our factory with attention to safety
in mind. BI-TORQ Valve Automation uses high quality materials and tested engineering to ensure that this product will
operate safely and reliably. Carefully read all instructions before handling in order to avoid injury to the operator or
damage to the product.
NOTE: Please refer to the attached assembly drawing FL-BT-0600 for parts identification and complete parts list.
II. GENERAL SAFETY INSTRUCTIONS
WARNING: THIS ASSEMBLY WAS SHIPPED FROM THE FACTORY IN THE UNARMED POSITION AND IS READY FOR INSTALLATION
IN LINE. USE EXTREME CAUTION IN HANDLING THE ASSEMBLY BECAUSE THE SPRING PACK IS UNDER FULL TENSION.
NOTE:THE VALVES ARE SHIPPED IN THE CLOSED POSITION.
The unit must be installed in a location with carefully maintained ambient temperatures. Installing the link
in locations where high temperature fluctuations are possible (such as direct sunlight) is not recommended. Exposure to
high ambient temperatures can cause the fusible links to break prematurely. (See chart 1 for link temperature ratings.)
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10
12
11
8
16
15
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ILLUSTRATION 1.1
all reference numbers
refer to drawing FL-BT-0600
Part Number
Yield Temp.
Max. Ambient Temp.
314135
135°F/57°F
104°F/41°C
314165
165°F/74°C
135°F/57°C
314212
212°F/100°C
185°F/82°F
314280
280°F/138°C
253°F/123°C
314360
360°F/182°C
330°F/166°C
Series
Links per assembly
FL-BT-149X
8
IMAGE OF FUSIBLE LINK
published 2/13/20
