Pressure Vessel Distribution (Riser & Head) All sizes

Pressure Vessel Distribution (Riser & Head) All Sizes — FAQs

1. What is the Pressure Vessel Distribution (Riser & Head)?

It’s a replacement internal distribution assembly consisting of a head and riser tube for resin pressure vessels used in water purification systems such as DI (de‑ionisation) vessels. This part ensures water flows evenly through the resin media inside the vessel.

2. What does “riser & head” mean?

• The riser tube is a vertical pipe fitted inside the vessel that carries water from the bottom to the outlet at the top.

• The head is the top distribution component where water enters and exits the resin bed. Together they form the distribution system needed for effective resin performance.

3. Why is a distribution riser & head needed inside a resin vessel?

Without a proper riser and head, water may simply channel down one side of the resin instead of saturating it evenly, leading to poor purification, premature exhaustion of resin, and inconsistent water quality.

4. What sizes does this part fit?

This product supports multiple vessel sizes (e.g., 6.9 L / 11 L / 25 L) — check your vessel size and choose the matching riser/head kit.

5. Can I use this to rebuild my DI resin vessel?

Yes — it’s typically used when rebuilding, servicing or replacing the internal distribution system of a resin vessel to restore correct flow and performance.

6. What problem does this part solve?

It eliminates dead zones and channeling inside the vessel so that water passes uniformly through the resin, maximising resin capacity and producing pure, low‑TDS output water.

7. Is this compatible with all DI vessels?

It’s designed for standard pressure‑rated resin vessels, but always match the neck diameter and vessel size before purchasing to ensure a proper fit.

8. How do I install it?

Installation normally involves:

1. Removing your vessel head and any old distribution parts.

2. Placing the riser tube down the centre of the vessel.

3. Fitting the head/ports at the top.

4. Securing any seals (O‑rings) before filling with resin, then re‑attaching the vessel cap.

9. How does it affect DI resin efficiency?

A good distribution riser and head ensures water flows evenly through the resin bed, so the full resin volume is used efficiently — this means better water purity and longer resin life before needing replacement.

10. Who needs this part?

This is a useful service/spare part for professional window cleaners, detailers, aquatics enthusiasts and anyone using DI resin vessels who wants consistent pure water performance from their filter system