The Bedford 20-3643 is a direct-fit replacement for the EXP-2 Reactor pump repair kit, designed for professionals who service and maintain Graco's advanced reaction injection molding equipment. This kit contains the essential components needed to restore full operational function to worn or degraded EXP-2 Reactor pumps used in polyurethane foam and composite coating systems.

Spray equipment technicians, pump rebuild specialists, and professional coating application crews rely on this kit to minimize equipment downtime. The EXP-2 Reactor demands precision-engineered internal components to maintain the exacting fluid delivery and pressure regulation required for reaction injection molding operations, making proper rebuilds critical to production schedules.

Common reasons for replacement:

• Seal degradation or fluid seepage from the pump housing causing pressure loss or contamination of reactive materials
• Worn or scored internal pump surfaces reducing volumetric efficiency and spray pattern consistency
• Failed check valve or fluid directional components causing backflow or inconsistent dispensing ratios
• Packing or O-ring deterioration from exposure to polyurethane or epoxy resin systems during normal operation

Manufactured to OEM-equivalent dimensions for proper fit and performance. Compatible Graco equipment models are listed in the Compatible Equipment section below, where available.