Under normal operating conditions with recommended strainer upstream that is properly maintained the Kates flow rate controller should perform many years without the need for changing parts. It would be expected that if wear would occur it would be on the adjuster shaft O-ring.

We recommend the purchase of a complete replacement parts kit. The kit includes all internal parts O-rings and a dial calibrated to the new parts. Thus, if any damage does occur to the controller, a new unit is available at a cost saving. Due to ongoing engineering & manufacturing changes we have found changing of individual parts will change calibration and in some cases parts will not be interchangeable. To avoid problems we offer only complete replacement parts kits when parts other than o-rings are required. Parts supplied in kit are as shown on the flow rate assembly drawing.