Waterway Plastics 210-3920 Old Faithful Jet Straight Body - 1.5 inch Orifice 175 GPM

What This Part Is Used For
The Waterway Plastics 210-3920 Old Faithful Jet Straight Body is a high-flow spa jet body designed for powerful water output. It features a straight-through flow path and is rated for a 1.5 inch orifice delivering up to 175 GPM. This jet body is commonly used in therapy zones requiring strong, direct flow. It serves as the foundation for compatible Old Faithful jet inserts.

Why This Part Matters
High-flow jet bodies must handle significant water volume without restriction. Using the wrong body can limit jet performance or stress the pump system. Replacing or installing the correct straight body ensures intended flow and pressure. OEM design supports reliable performance under high-demand conditions.

Key Features and Specifications

• Manufacturer SKU 210-3920
• Old Faithful series jet body
• Straight-through flow design
• 1.5 inch orifice
• Rated for approximately 175 GPM
• Designed for high-output spa therapy jets
• OEM Waterway Plastics component

Installation and Fitment Guidance
This jet body is installed as part of the spa plumbing system prior to shell or cabinet completion. Plumbing connections must support high flow rates. Jet internals are installed after the body is secured. Confirm by manufacturer part number before ordering.

About the Waterway Plastics Brand
Waterway Plastics engineers jet bodies designed to handle demanding flow requirements. Their Old Faithful series is known for high-output applications. OEM components ensure proper system balance. Waterway is widely trusted in professional spa builds.

Common Service Context
This part is referenced during high-flow spa design or pump upgrades. Technicians encounter it when diagnosing weak therapy output. It is typically replaced only during major system work.