Quick view Add to Cart Overhaul Instructions with Parts Breakdown for 3000 PSI Controllable Check Valve - Part 26800 Document Part Number: T.O. No. 9H8-6-42-3 Number of pages: 4Part Number: T.O. No. 9H8-6-42-3Revision Date: 15-June-1955Description: Mfg By: Hydraulic Research MSRP: Was: Now: $15.00