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Thermal Shutoff Valve
Selection Guide

About Thermal Shutoff Valves

Assured Automation supplies a complete range of Thermal Safety Shutoff Valves with fusible links. Our stock inventory includes Thermally activated Emergency Isolation Valves, and FM approved FireChek® thermal exhaust valve.

For some applications and in specific industries some of these valves are referred to as EBV (Emergency Block Valves) (API RP 553 Classes A, B,& C), EIV (Emergency Isolation Valves ) (API RP 533 Class D), SDV (Shut Down Valve) or ESV, ESD or ESDV (Emergency Shutdown Valve), Emergency Shutoff valves (ESOV) (NFPA 54), automatic-closing heat-actuated valves (OSHA 29 CFR 1910.106), Firesafe Valves (Factory Mutual FM Class 7440) and Safety Shutoff Valves (FM Class 7400). They are also sometimes referred to as ESDV (Emergency Shutdown Valves) or ROSoV (Remotely Operated Shutoff Valves).

Series Description
TSV Stand-alone Thermal Shut-off Valve assemblies that combine a fire-safe ball or butterfly valve with a spring return actuator and a Firechek heat-activated pneumatic shut-off and vent valve to close the actuator. Superior to fusible link assemblies, they can be tested and reset without replacing any hardware.
ESOV Emergency Shut-off Valves. Spring assisted swing check valve with fusible link. Remote Trigger options include electro-magnet and air cylinder.
FireChek®
 Heat activated pneumatic shut-off valve used to close the supply air line and vent a spring return actuator to allow return to failsafe position. Adds thermal shutoff to any spring return pneumatically actuated valve without affecting normal operation.
FM Fire-Safe Valve assembly with a spring loaded actuator held in operational position by a fusible link. Link releases at trigger temperature and spring actuates valve to emergency position. entire assembly is dedicated to this thermal shutoff function.
ESD Emergency Shutdown Valves. Complete spring-return, pneumatically actuated process control valve assemblies that incorporate the FireChek® listed above to provide Emergency Shutdown.
TSV Series

Thermal Shut-off Valves (Fire-safe Valves with FireChek Thermal Shut-off)

thermal shut-off valve
Key Features
  • Fire-Safe to API 607-5
  • Passed testing standard MIL-STG-810G for vibration and humidity/temperature
  • Spring Return Actuator with FM approved FireChek Thermal Shutoff
  • Pressure Gauge to monitor internal actuator pressure
  • Manual Override through Schrader valve
  • Variety of Limit Switches Optional
  • Optional wireless alarm system for status changes
Specifications

Valves

  • Ball: NPT, Socket Weld, 150# or 300# Flanged
  • Butterfly: 150# Lugged or Wafer

Materials

  • Body: Carbon Steel or Stainless Steel
  • Seats & Seals: Fire-safe to API 607-5

Sizes

  • 150# or 300# ANSI Flange: 1/4" to 8"
  • NPT: 1/2" to 4"
  • Socket Weld with Heat Sink: 1/2" to 4"

Trigger Temperatures

  • 165°F (standard), 150°F, 135°F
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ESOV Series

Emergency Shut-off Valves (Swing Check Valves with Fusible Link)

emergency shut-off swing check valve with fusible link
Key Features
  • Local and/or remote actuation
  • Fire-Safe fusible link
  • Economical solution for required safety
  • Can be used in horizontal and vertical service
  • All valves are factory tested to API 598
  • Back pressure ensures a tight seal between the disc and seat
  • Once closed, the valve can ONLY be reset manually as a safety feature
Specifications

Materials

  • Body: Carbon Steel or Stainless Steel
  • Seat: API Trim 08 or 12
  • Top Seal: TFM or Graphite

End Connections

  • 150# or 300# ANSI Flange: 2" to 16"

Temperature and Pressure

  • Max. Temperature:
    TFM:     450°F
  • Max. Pressure:
    150#:     275 PSIG
    300#: 740 PSIG

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FireChek® Series

Heat Activated Pneumatic Shutoff Valves

Key Features
  • Rapidly responds to temperature rise, NOT flames
  • Vents actuator air pressure to return to failsafe
  • Closes actuator air supply line
  • Needs no power source, self activates
  • Compatible with ALL pneumatic actuators
  • No contact with process fluids
  • Easy to test and reset
  • Reliable, intrinsic triggering
  • Easily retrofit, installs in minutes
  • Valve Made in the USA
  • FM Approved
    FM Approval through Memry Corp.
Specifications

Materials

  • Body: Stainless Steel
  • Seals: BUNA
  • Thermal Insulators: DELRIN®
  • Sensor/Trigger Coil: MEMRY®

End Connections

  • NPT: 1/4" female
  • Compression: 1/4"

Actuation Temperatures

  • Standard: 165°F
  • Optional: 135°F, 150°F

Sizes & Models

  • FireChek
  • FireChek with Quick Exhaust
  • FireChek with High Flow Pilot Valve
  • FireChek with Solenoid Operated High Flow Pilot Valve
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FM Fire-Safe Series

Fire-Safe Valves with Thermal or Electro-thermal Shutoff

fire safe valve with fusible link
Key Features
  • Fire-Safe to API 607
  • U.L. listed Thermal or Electro-thermal Fusible Links
  • Removable Handle for Manual Operation
Specifications

Valve Types

  • Ball Valve with NPT Connections (1/2" to 2")
  • Ball Valve with 150# or 300# ANSI Flange Connections (1/2" to 4")
  • Butterfly Valve with 150# Wafer or Lugged Connections (3" and 4")

Materials

  • Body: Stainless Steel or Carbon Steel
  • Seals: TFE/SS/Graphite - Fire-safe

Actuation Temperatures

  • 165°F, 212°F, 286°F, 360°F, 500°F

Temperature and Pressure

  • Varies Depending on Valve Series Chosen

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ESD Series

Emergency Shutdown Valves (Pneumatically Operated Valves with FireChek Thermal Shutoff)

emergency shut down valve
Key Features
  • Fire-Safe to API 607-5
  • Spring Return Actuator with FireChek Thermal Shutoff
  • Solenoid for Actuator Control & Remote Shutoff
  • Modulating Positioner Optional
  • Manual Override Optional
  • Variety of Limit Switches Optional
Specifications

Materials

  • Body: Carbon Steel or Stainless Steel
  • Seats: TFM or 50/50
  • Seals: TFM or Graphite

End Connections

  • 150# or 300# ANSI Flange: 1/4" to 8"
  • NPT: 1/2" to 4"
  • Socket Weld with Heat Sink: 1/2" to 4"

Temperature and Pressure

  • Max. Temperature:
    TFM:     475°F
    50/50: 525°F
  • Max. Pressure:
    150#:     275 PSIG
    300#: 700 PSIG

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