K-Rain 4000 Series 4 Outlet Indexing Valve 1-1/4 in. Slip | 4403

Product Overview

System failures due to malfunctioning indexing valves often lead to catastrophic turf damage and dry spots during the peak of the irrigation season. When an indexing valve fails to cycle correctly, specific zones are skipped while others are flooded, resulting in costly callbacks and frustrated clients. With summer heat windows narrowing and lead times for specialized components often extending weeks out, having the K-Rain 4000 series on hand is a critical move for your service inventory. Securing your supply now ensures your crews can resolve zone issues immediately, avoiding the scheduling bottlenecks and project delays that typically occur when local stock runs dry. Proactive replacement keeps your systems running and your clients satisfied without the stress of backend supply chain interruptions.

The K-Rain 4403 model offers a distinct technical advantage by providing a simple, high reliability alternative to complex electric solenoid manifolds. This mechanical indexing system requires only one pump or fountain timer to operate, significantly reducing the amount of wire and the number of solenoid valves required for a multi-zone installation. By streamlining the system design, you save hours in trenching and electrical labor while minimizing the long term maintenance costs associated with electrical troubleshooting. Investing in this heavy duty valve gives your business a competitive edge by offering a durable, cost effective solution for residential and light commercial projects where simplicity and longevity are the primary goals.

Product Specifications

Available Models & Sizes

The K-Rain 4000 series is available in several configurations including 4 and 6 outlet models with various inlet and outlet sizes ranging from 1 inch to 1.5 inches. Please contact our sales team for information on specific cam configurations, replacement internal parts, or bulk pricing for large scale installation projects.

Key Features

• High grade ABS construction provides exceptional durability and resistance to UV degradation in exposed environments.
• Mechanical operation eliminates the need for complex multi strand wiring and expensive irrigation controllers.
• Pre installed cam allows for immediate 4 zone operation with the ability to change to 2 or 3 zone configurations.
• Slip connection design facilitates fast and secure solvent welding for rapid installation on the job site.
• Low pressure loss design ensures that maximum water volume reaches your heads for consistent coverage.
• Simplified internal drive mechanism allows for easy field servicing without the use of specialized tools.

Common Applications

• Residential lawn and garden systems
• Municipal parks and public spaces
• Sports turf and golf course maintenance
• Greenhouse and nursery operations
• Agricultural and crop irrigation
• Onsite wastewater and effluent disposal

Installation Notes

Prior to installation, ensure the pump size is matched to the flow requirements of the valve to guarantee proper indexing between cycles. Use a high quality PVC primer and solvent cement for the 1.25 inch slip connections, and allow for adequate cure time before pressurizing the system. It is recommended to install the valve at the highest point in the system or include an air release valve if the piping layout creates air pockets that could interfere with the mechanical cam rotation. Always flush the main supply line before connecting the valve to prevent debris from fouling the internal assembly.