Home / Appliance / Parts / Captive Air Tank Inlet Flange U31-447P Captive Air Tank Inlet Flange U31-447PPrice Not Available Price may not be up-to-date. Out of Stock View Product Part Number: U31-447P Brand: STA-RITE INDUSTRIES Seller: Sears PartsDirect Categories: Appliance, Parts Possible Matches$42.98Fully New A32-U47 Replacement Laptop Battery Compatible with Asus U... Description This inlet flange (part number U31-447P) is for captive air tanks. Inlet flange U31-447P connects the pump hose to the tank. Wear work gloves to protect your hands when installing this part.