
SENTRY GT TCO + SENTRY GS EFV is a thermal cut-off device (TCO) combined with an excess flow valve (EFV) as a single unit. This product was designed for new installation in the UK. SENTRY GT thermal cut-off devices (TCO) help prevent gas from flowing to downstream components that may not be resistant to high temperatures. SENTRY GT TCOs automatically shut off the gas flow at temperatures between 92 °C and 100 °C. At the release temperature, the release mechanism (temperature sensor) unblocks the closing unit, which then moves into the valve seat resulting in a gas-tight seal. The SENTRY GTs™ remain closed for a period of at least 30 minutes at temperatures up to 650 °C (Maxitrol tested up to 925 °C) and after it cools. SENTRY GT can be installed upstream or downstream of the emergency control valve (ECV). This product is designed for new installations in the UK.
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