Fusible plugs, CLASSIC line

Fusible plugs are safety devices that contain a material that melts at a specific temperature and consequently vents the pressure. Safety accessories for use with the following ASHRAE 34:2019 refrigerants, Class A1:

• HCFC (R22)
• HFC (R134a, R404A, R407C, R410A, or R507)
• HFO and HFO/HFC blends (R1234ze, R448A, R449A, R450A, R452A, R513A)

Alloy melting point 79 °C for plugs in series 3080. Alloy melting point 138 °C for plugs in series 3082.