Flame safety valve need to connect with thermocouple.
Inlet and outlet thread 3/8" Flare (can connect US standard regulator hose and corrugated hose directly)
Valve Shaft size for knob 6.1mm.(need connect with 6.1-6.3mm D shaft knob)
Only suitable for Low pressure application (max BTU rating: 50000)
Suitable for Gas grill, heater, fire pit, fireplace if same connections