Durabla pump valve units are designed for easy installation with a minimum of disassembly required to accomplish the task efficiently. Style V7H and press fit V7 valve units should not be disassembled before installation. Detailed instructions are available with each Pump Valve order. Install Durabla pump valve units in clean, dry pump ports. Avoid the use of force. DO NOT STRIKE THE STUD OR BOLT! Use the Durabla installation tool, which will fit over the stud. For units with the press fit seat, the Durabla pressing block will facilitate installation. The Durabla seat wrench will fit the web pattern of the threaded seat and fit over the stud to accomplish installation.

When inspection shows that wear has occurred, proper maintenance will include replacement of the valve disc, spring, sleeve, and locknut or bolt.
It is recommended that the seat be refaced so that no ridges exist at either the inner or outer edges of the valve seating surface, and the inside and outside seating surfaces remain on the same plane. Reinstallation of the seat should be made with the same care outlined for new units. Studs, locknuts and bolts should be torqued according to the table.