Product Overview

The Pentair PSV3S 1 1/2" - 2" PSV Series 3-Port Diverter Valve is a pool and spa plumbing valve designed to control, divert, or split water flow between multiple plumbing lines. This 3-port valve is commonly used on pool/spa systems, suction lines, return lines, water features, heater bypasses, and equipment pad plumbing where adjustable water flow control is needed.

The 1 1/2" x 2" connection design provides installation flexibility by accepting 1 1/2" PVC pipe inside the valve socket or 2" fittings over the outside of the valve ports, depending on the plumbing layout.

Ideal For

Pool and spa plumbing systems
Suction-side plumbing control
Return-side plumbing control
Pool/spa combination systems
Water feature flow control
Heater bypass plumbing
Equipment pad repairs
New pool construction and renovations
Pool service technicians and builders

Key Features

3-port / 3-way diverter valve design
1 1/2" x 2" plumbing connection size
Allows water flow to be diverted, blended, or shut off between ports
Durable valve body for pool and spa applications
Designed for pool equipment pad flow management
Full-flow style for efficient water movement
Removable handle for easier service and orientation adjustment
Useful for manual control of suction, return, spa, water feature, or bypass lines
Compatible with standard pool and spa PVC plumbing layouts
Professional installation recommended

Benefits

The PSV3S diverter valve gives pool professionals and homeowners better control over water flow through the pool equipment system. It can be used to send water to different return lines, control spa and pool circulation, adjust water feature flow, or isolate plumbing sections for service.

Its 1 1/2" x 2" connection format provides flexibility during installation and replacement, especially on equipment pads where existing plumbing may use either 1 1/2" pipe or 2" fitting connections.

Specifications

Customer-Facing Q&A

What is the PSV3S valve used for?
The PSV3S is used to control and direct water flow in pool and spa plumbing systems. It can divert flow between different plumbing lines or partially blend flow depending on handle position.

Is this a 3-way valve?
Yes. This is a 3-port / 3-way diverter valve.

What size plumbing does it fit?
This valve is commonly listed as 1 1/2" x 2". It accepts 1 1/2" PVC pipe inside the socket or 2" fittings over the outside of the valve ports.

Can this be used on a pool/spa combo system?
Yes. 3-port diverter valves are commonly used to control pool/spa suction and return plumbing when installed correctly.

Can this be used for a heater bypass?
Yes. This style of diverter valve is commonly used in heater bypass plumbing, water feature control, and equipment pad flow management.

Is this the same as a check valve?
No. A diverter valve is manually adjusted to control water direction. A check valve automatically prevents backflow.

Can an actuator be installed on this valve?
Some diverter valves can be automated with compatible valve actuators, but actuator compatibility should be confirmed before ordering.

Confirm Before Ordering

Confirm your valve size, port count, and plumbing layout before ordering. This listing is for a 1 1/2" x 2" 3-port diverter valve. It is not the same as a 2-port valve, check valve, ball valve, or 2" x 2 1/2" valve.

Always verify the part number on your existing valve or pool plumbing diagram before purchasing. Pool plumbing repairs should be performed with the pump off and the system depressurized.