Get your wrench for Clack brand valves V3193-02. This Clack wrench is used to service Clack control valves. It can help remove and tighten pistons, and help install and loosen nuts and fittings on Clack valves. With this wrench, any work on Clack valves will be quick and easy, it's made specifically for the job. If you have any questions about compatibility, call our customer service and we'll be able to answer your questions.