Flange milk pump Lely A4 - Front

Milk Pump Flange (Front) – Compatible with Lely A4

Precision-Engineered Sealing for Astronaut A4 Systems

Maintain the integrity of your milk transport system with our high-quality replacement Front Milk Pump Flange. This component is critical for securing the pump housing and ensuring a perfectly airtight and leak-proof seal during the milking and wash cycles.

Product Specifications

• Part Number: Corresponds to Lely 5.1004.0420.0
• Compatibility: Specifically designed for the Lely Astronaut A4 milking robot.
• Position: Front-facing flange for the primary milk pump assembly.

Key Features

• High-Grade Material: Manufactured from food-safe, chemical-resistant polymers designed to withstand the heat and acidity of daily CIP (Clean-In-Place) cycles.
• Perfect Alignment: Engineered to OEM tolerances to ensure the pump impeller and housing align perfectly, reducing vibration and mechanical wear.
• Leak Prevention: Features a smooth, precision-molded surface to provide a superior seat for gaskets and O-rings, preventing milk loss and vacuum fluctuations.
• Durable Bolt Pattern: Reinforced mounting points to prevent cracking under the standard torque required for a secure seal.

Maintenance Tip: The "O-Ring Check"

Whenever you have the front flange removed for service, always inspect the main pump O-ring for any signs of flattening, perishing, or nicks. We recommend applying a very thin layer of food-grade silicone lubricant to the O-ring before reassembly. This ensures a better seal and prevents the rubber from "pinching" or twisting when the flange bolts are tightened.