Rain Bird CP100 In-Line Valve 1-Inch Female x Female – 24V, Low Power, Reverse-Flow

Designed for underground irrigation

The Rain Bird CP100 In-Line Valve is built for residential and light commercial use, sitting quietly in a buried valve box. With a 1-inch female inlet and outlet, it integrates with standard 24-volt timers or controllers to automate irrigation without visible hardware.

Key features at a glance

• Residential / light commercial grade 1\" female threaded inlet and outlet
• Works with any standard sprinkler timer
• Designed for below-ground installation out of sight and away from playful hands
• Operates automatically or manually with manual bleed screw
• Reverse flow design reduces stress on diaphragm for dependable operation
• Energy efficient, low power encapsulated solenoid with captured plunger
• Buna-N diaphragm provides superior performance in harsh water environments

What makes this valve stand out is its balance of rugged construction and streamlined operation. The Buna-N diaphragm stands up to mineral-rich or variable water quality, while the encapsulated solenoid minimizes energy use and heat loss over time. The reverse-flow design adds a safeguard against unintended flooding should the diaphragm wear or fail during a cycle. Because it is a true inline valve, it is designed to live underground and out of sight, helping keep your landscape irrigation tidy and protected.

Real‑world benefits and use cases

Use the CP100 to control zones in homes or small commercial settings, coordinating sprays, rotors, or impact heads with a single 24V timer. The manual bleed screw makes testing and commissioning straightforward, even when the system is offline for maintenance.

• Energy-efficient operation can help reduce overall power draw during seasonal watering
• Reliable automatic control with the option to intervene manually when needed

Installation and maintenance tips

• Flush the system of dirt and debris manually using the valve's external bleed screw before startup
• Install below-ground in a valve box downstream from the main line from a PVB or double-check valve
• Use a backflow prevention device as required by local codes; check city requirements for your area

Rain Bird remains committed to The Intelligent Use of Water, offering products designed to help manage irrigation more efficiently while providing lasting value in both residential and commercial landscapes.