Stanbroil Liquid Propane Fire Pits 1/2" Air Mixer Valve - High Capacity 90K BTU Stainless Steel Description You need the Air Mixer when you using liquid propane or some other combustible gas for outdoor fire or fire pit. The liquid propane can not burn very well without the air, so in this time you need the air mixer to mix the liquid propane and the air to make fire burning well. We have different numerical value of BTU to choose. I think our Stanbroil Air Mixer will help to burn the fire well. Features: Rated BTU's: 90,000 Max All fittings are 1/2 inch NPT male threads,1/2" Female or Male (with included adapter) NPT on Burner Side and 1/2" Male NPT on Incoming Side For propane (LP) only, Improves Propane burn efficency Results in higher quality flame appearance Reduces sooting normally associated with Propane Product Details: Material: Stainless Steel Style: Modern Brand: Stanbroil Item Weight: 50 Grams Fuel Type: Liquefied Petroleum Gas Assembly Required: No Color: Stainless Steel Material: Stainless Steel Style: Modern Brand: Stanbroil Item Weight: 50 Grams Fuel Type: Liquefied Petroleum Gas Assembly Required: No Color: Stainless Steel Product Dimensions: 10 x 2 x 10 inches Item Weight: 1.76 ounces Manufacturer: Stanbroil Item model number: B001-90K-SS Is Discontinued By Manufacturer: No