Portable Gas Heater Quick Connect Coupling Product Type Quick-Connect Gas Couplings Compatible with Product Type Portable Gas Heaters Compatible Grainger Part Number 31C942 Compatible Mfr Model Number 100506 Minimum Temperature -40 Degrees F Maximum Temperature 200 Degrees F Pipe Connection Size 3/8 in Pipe Connection Type (F) NPT Interchange Type Universal Locking Type Push-to-Connect Hose Connection (F) NPT Coupling Size 3/8 in Coupler Type Coupler Body Connection Size 3/8 in