Portable Gas Heater Quick Connect Coupling, Product Type Quick-Connect Gas Couplings, Compatible with Product Type Portable Gas Heaters, Compatible Grainger Part Number 31C941, Compatible Mfr. Model Number 100012, Minimum Temperature -40 Degrees F, Maximum Temperature 250 Degrees F, Pipe Connection Size 1 in, Pipe Connection Type (F) NPT, Interchange Type Universal, Locking Type Push-to-Connect, Hose Connection (F) NPT, Coupling Size 1 in, Coupler Type Coupler Plug, Connection Size 1 in