These plugs are for use with refrigerants: 12, 22, 23, 32, 123, 1234yf, 1234ze, 134a, 152a, 245fa, 245fr, 401A, 402A, 404A, 407A, 407C, 407F, 408A, 410A, 417A, 421A, 422A, 422B, 422C, 422D, 424A, 427A, 434A, 438A, 443A, 448A, 449A, 450A, 452A, 452B, 454B, 500, 502, 507, 508A, 508B, 513A, AND 744 (sub-critical use only).
These devices are intended to provide means of pressure relief in refrigeration systems. They have a marked temperature rating of 360°F (182.2°C).
Caution: Brass plug is incompatible with Ammonia (R 717), DO NOT INSTALL ON COMPONENTS THAT WILL COME IN CONTACT WITH AMMONIA (R 717).
Model 1/8″ 360º Plug
| Refrigerant | Discharge Capacity (lb/min) | Melting Temperature(ºF) | Fusible Plug NPT | Plug Material |
| R22 | 11.71 | 360 | 1/8″ | Brass |
| R410A | 11.21 | 360 | 1/8″ | Brass |
| R134a | 9.53 | 360 | 1/8″ | Brass |
| R404A | 8.87 | 360 | 1/8″ | Brass |
Model 1/4″ 360º Plug
| Refrigerant | Discharge Capacity (lb/min) | Melting Temperature(ºF) | Fusible Plug NPT | Plug Material |
| R22 | 18.71 | 360 | 1/4″ | Brass |
| R410A | 17.91 | 360 | 1/4″ | Brass |
| R134a | 15.22 | 360 | 1/4″ | Brass |
| R404A | 14.18 | 360 | 1/4″ | Brass |