How do I replace the diaphragms on the DICE™ Chemical Dosing Modules?

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Before starting the diaphragm replacement procedure, ensure the DICE™ unit is safe to handle. If the DICE™ unit is installed on a dosing system, make sure there is no pressure or residual chemical inside the unit. Always wear the required personal protective equipment.

Video: DICE™: How to Replace the Diaphragms on the DICE™ Chemical Dosing Modules

Follow along with the video tutorial or click the timestamp next to any step to jump to that point in the video.

Diaphragm Replacement Guide

Tip: Tap the ▶ Step # to expand or collapse more detailed instructions

Step 1: Remove the Valve Adjustment Screw

0:54

Start the diaphragm replacement process by completely removing the valve adjustment screw from the DICE™ unit.

Step 2: Unscrew the Mounting Bolts

1:24

Proceed by unscrewing the four mounting bolts that hold the valve body to the DICE™ unit.

Step 3: Remove the Valve Body and Old Diaphragm

2:02

Detach the valve body along with its four mounting screws. Then, remove the spring and seat assembly and the old diaphragm from the DICE™ block.

Step 4: Clean and Dry the Sealing Surface

2:16

Before installing the new diaphragm, clean and dry the diaphragm sealing surface on the DICE™ block.

Step 5: Install the New Diaphragm

2:23

Once the sealing surface is ready, install the new diaphragm and reinstall the spring and seat assembly.

Step 6: Reinstall the Valve Body

2:35

Now, reinstall the valve body along with the four mounting screws.

Step 7: Tighten the Mounting Screws

2:45

Tighten the four mounting screws and apply a torque of 25 pound-inches. Afterward, apply the final torque of 35 pound-inches on the mounting screws.

Step 8: Reinstall the Adjustment Screw

3:55

Reinstall the valve adjustment screw back into the DICE™ unit.

Step 9: Proceed with the DICE™ Setup and Adjustment

4:10

Finally, proceed with the setup and adjustment of the DICE™ unit as per your application requirements.

✅ With these steps, you've successfully replaced the diaphragm in your DICE™ Chemical Dosing Module.

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