The Bedford 20-774 is a direct-fit replacement for the 5:1 Monark pump repair kit, designed for spray equipment technicians and pump rebuild specialists who service this popular mid-range proportioning pump. This kit contains the internal components necessary to restore a worn or degraded 5:1 Monark unit to original performance specifications without requiring replacement of the pump housing.

Professional painting contractors and rental equipment service staff rely on kits like this to extend equipment life and minimize downtime. A complete rebuild using OEM-equivalent parts is often more cost-effective than purchasing a replacement pump, particularly when addressing multiple component failures discovered during preventive maintenance or after extended seasonal use.

Common reasons for replacement:

• Packing degradation or leakage around the pump rod, reducing seal integrity and allowing fluid bypass
• Worn internal seals, check balls, or valve components that compromise pressure consistency and spray control
• Loss of prime or reduced pump output after extended operation, indicating seal and component wear
• Scheduled rebuild intervals for rental fleets or high-use contractor operations requiring predictable performance

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