Autotrol Magnum IT 298-764 Duplex Valve Heads with 764 Controller Alternating

The Autotrol Magnum IT 298-764 duplex valve heads with alternating 764 controller are a complete commercial-grade valve assembly, stocked by WrekinWater for commercial and industrial water softening installations that need uninterrupted supply. This pairs two Magnum IT 298 valve heads with a 764 electronic controller configured to alternate between vessels, so one tank stays online and regenerating while the other remains in service, giving continuous soft water even during regeneration.

Technical specifications

Symptoms that mean you need this part

• Internal or external leaking from the valve body that seal kit repairs no longer resolve
• The 764 controller display is faulty, blank, or unresponsive
• The alternating function fails to switch service correctly between the two vessels
• Persistent hardness in the softened water despite the resin and seals having already been serviced

Why it fails / why it matters

A duplex valve head assembly like the Magnum IT 298-764 is built to withstand constant, high-frequency cycling in commercial settings, but after years of continuous switching between vessels, the internal seals, pistons, and the electronic controller itself are all subject to wear and age-related failure. Once the valve body, seals, or the 764 controller's electronics start to fail beyond what routine servicing can fix, replacing the full duplex valve head assembly becomes the more reliable option than continuing to patch individual components on a system that needs to keep running without interruption.

Why buy this from WrekinWater

WrekinWater has served more than 50,000 customers over 15 years from its base in Bettisfield, Shropshire, and stocks commercial and domestic parts for Pentair Fleck, Autotrol, Clack, Kinetico and other major brands, including this Magnum IT 298-764 duplex assembly for higher-demand installations. As a UK-registered company (Company No. 11000488) rated Excellent on Trustpilot, WrekinWater is an accountable supplier for a significant commercial investment like this, and can put you in touch with details for a qualified installer to handle commissioning.

How to fit it

1. Arrange for a competent water treatment engineer to assess your existing duplex installation and confirm the Magnum IT 298-764 assembly is the correct specification for your system before ordering
2. Isolate and fully drain both vessels, and place the system into full bypass ahead of the changeover
3. Have the engineer remove the existing valve heads and manifold connections from both mineral tanks
4. Fit and plumb the new Magnum IT 298 valve heads to the manifold, and connect the 764 controller wiring according to the manufacturer's installation guidance
5. Configure the 764 controller for alternating operation, setting regeneration parameters to match your site's water usage and hardness levels
6. Commission the system fully — testing the switch-over between vessels, checking for leaks at every joint, and confirming continuous soft water supply — before handing the installation back into service