GRACO Fluid End Repair Kit: Fluid End Repair Kit, 25A859, Santoprene
SKU 3G-OTH-91300
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Frequently Asked Questions
What is a Graco fluid end repair kit used for?
A Graco fluid end repair kit is used to rebuild the fluid section of Graco air-operated double-diaphragm pumps. It restores sealing and pumping efficiency in industrial applications handling paints, inks, adhesives, and chemicals. The 25A859 kit specifically suits Santoprene wetted parts for abrasive or corrosive fluid transfer.
What are the specifications of the Graco 25A859 fluid end repair kit?
The Graco 25A859 fluid end repair kit is a genuine Graco replacement assembly. It includes Santoprene diaphragms and Santoprene check-valve components. The manufacturer part number is 25A859. This kit is designed for use with Graco diaphragm pumps requiring Santoprene wetted materials for chemical compatibility and wear resistance.
Where to buy Graco 25A859 fluid end repair kit worldwide?
3G Electric supplies the Graco 25A859 fluid end repair kit worldwide. As a global industrial equipment distributor, we handle full logistics, customs clearance, and delivery to your site. Contact our team to place an order or request a quote for international shipping. We source genuine Graco parts for reliable pump maintenance.
How to install a Graco fluid end repair kit?
To install a Graco fluid end repair kit, first depressurize and drain the pump. Remove the old fluid end components and clean all mating surfaces. Install the new Santoprene diaphragms and check valves per Graco’s service manual. Torque fasteners to specification and test for leaks before returning the pump to service.
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Common applications for GRACOGRACO Products
3G Electric supplies GRACO graco fluid-end repair kits. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.


