Quick view Add to Cart Illustrated Parts Breakdown for Selector, By-pass, & Shut-off Hydraulic Valves Document Part Number: T.O. No. 9H8-4-25-4 Number of pages: 20Part Number: T.O. No. 9H8-4-25-4Revision Date: 2-Mar-1957 MSRP: Was: Now: $16.26