Hayward Flow Controller | ECX1055 Jandy 1.5"-2" 2-Way Valves The 3900 Sport features an

The 3900 Sport features an all-wheel PosiDrive system with a durable stainless-steel drive chain that delivers 50% more torque for maximum speed and performance

60 Hz frequency rating

Large Capacity: Collects more debris

The thrust jet assembly is a replacement part made by Polaris

Hayward Flow Controller | ECX1055 Jandy 1.5"-2" 2-Way Valves The 3900 Sport features anHayward Flow Controller ECX1055 The Hayward Flow Controller (ECX1055) is an essential component for maintaining precise water flow in your pool filtration system. Designed for compatibility with a variety of Hayward models, this flow controller ensures optimal system efficiency and performance. Crafted from durable materials, it delivers reliable operation and long lasting use. Key Features: Precise Flow Control: Regulates water flow for efficient