Everflo EF4000 Repair Kit – OEM Replacement Part
Part Number: 4689
Category: Pumps → Pump Parts → Pump Heads & Repair Kits
Type: Everflo EF4000 Replacement Pump Head Kit
The Everflo EF4000 Repair Kit (Part #4689) is a genuine OEM replacement pump head assembly designed to restore the performance, reliability, and service life of compatible Everflo EF4000 diaphragm pumps. Featuring a durable polypropylene housing, polypropylene valve plate, Viton® valves, and a Santoprene® diaphragm, this replacement pump head provides a cost-effective solution for repairing worn or damaged pumps without replacing the entire unit.
Key Features & Benefits
- Genuine Everflo OEM replacement pump head
- Designed specifically for Everflo EF4000 pumps
- Restores original pump performance
- Durable polypropylene pump housing
- Polypropylene valve plate construction
- Viton® valve assemblies for chemical resistance
- Santoprene® diaphragm for durability and flexibility
- Honeywell® Micro Switch® compatibility
- Round-Up® ready chemical compatibility
- Cost-effective alternative to full pump replacement
- Helps reduce equipment downtime
- Easy installation and maintenance
Technical Specifications
Part Number: 4689
Manufacturer: Everflo
Product Type: Replacement Pump Head Kit
Compatible Pump: Everflo EF4000
Maximum Flow Rate: 4.0 GPM (15.1 LPM)
Maximum Pressure: 60 PSI (4.1 Bar)
Maximum Temperature: 140°F
Port Size: 1/2" NPT Female
Pump Housing Material: Polypropylene
Valve Plate Material: Polypropylene
Valve Material: Viton®
Diaphragm Material: Santoprene®
Switch Type: Honeywell® Micro Switch®
Chemical Compatibility: Round-Up® Ready
OEM Replacement: Yes
Compatible Applications
Agricultural Spraying
Ideal for:
- Herbicide application
- Fertilizer spraying
- Insecticide application
- Spot spraying
- Broadcast spraying
- Crop protection systems
Lawn & Landscape Maintenance
- Turf management
- Vegetation control
- Commercial landscaping
- Property maintenance
Fluid Transfer Systems
- Water transfer
- Tank filling and transfer
- Utility spraying
- General fluid handling
Commercial Applications
- Pest control equipment
- Agricultural equipment
- Spray rigs
- Utility and maintenance vehicles
Premium Material Advantages
Viton® Valves
- Excellent chemical resistance
- Long service life
- Reliable sealing performance
- Suitable for many agricultural chemicals
Santoprene® Diaphragm
- Durable flexible construction
- Excellent fatigue resistance
- Consistent pumping performance
- Designed for extended service intervals
Polypropylene Construction
- Corrosion resistant
- Lightweight yet durable
- Excellent chemical compatibility
- Long-lasting performance
Performance Benefits
- Restores original flow output
- Maintains consistent pressure
- Improves pump reliability
- Extends overall pump life
- Reduces repair costs
- Minimizes downtime
- Supports dependable field operation
- Helps maintain spraying efficiency
Signs Your EF4000 Pump Head Needs Replacement
Replace the pump head if you notice:
- Reduced flow rate
- Loss of pressure
- Cracked housing
- Internal leakage
- Diaphragm damage
- Valve wear
- Inconsistent pump cycling
- Chemical leaks
Installation Notes
- Disconnect power and relieve system pressure.
- Remove the existing pump head assembly.
- Inspect the motor and mounting components.
- Install the replacement pump head.
- Reconnect plumbing and fittings.
- Prime the pump before operation.
- Verify proper flow, pressure, and leak-free performance.
Important: Always confirm compatibility with your Everflo EF4000 pump before installation and follow manufacturer service procedures.
Maintenance Recommendations
- Flush the pump after chemical use.
- Keep inlet strainers clean.
- Inspect valves and diaphragms regularly.
- Monitor pressure and flow performance.
- Replace worn components promptly.
- Follow Everflo recommended maintenance schedules.
