Drain Valve for Models 3300142 3300241 3324541 3331041 3332041 3332645. Series Speedaire Compatible with Grainger Part Number 787U76 787U77 787U78 787U79 787U80 787U81 787U82 Product Type Drain Valve Compatible with Manufacturer Part Number J0905070201 Compatible with Series 787U76 787U77 787U78 787U79 787U80 787U81 787U82 810RA7 810RA8 Compatible with Brand Speedaire Includes Not Applicable