---
title: "Pumps & reservoirs, the loop's quiet engine."
description: "Three-in-one pump-reservoir-manifold combinations built around PWM-controlled D5 pumps. The reservoir, the pump, and the distribution manifold sit on a single chassis-mountable assembly – fewer fittings, fewer leak paths, and a fixed pressure envelope across the workstation catalogue."
url: "https://www.lmtek.com/components/pump-reservoir"
locale: "en"
---

# Pumps & reservoirs, the loop's quiet engine.

Three-in-one pump-reservoir-manifold combinations built around PWM-controlled D5 pumps. The reservoir, the pump, and the distribution manifold sit on a single chassis-mountable assembly – fewer fittings, fewer leak paths, and a fixed pressure envelope across the workstation catalogue.

- [EK-Pro Pump Reservoir Manifold X6 D5 - Acetal](/components/pump-reservoir/ek-pro-pump-reservoir-manifold-x6-d5-acetal) – Compatibility: EK-Pro GPU and CPU water blocks with G1/4" ports · Type: combo · EAN: 3831109910399
- [EK-Pro Pump Reservoir Manifold X3 D5 - Acetal](/components/pump-reservoir/ek-pro-pump-reservoir-manifold-x3-d5-acetal) – Compatibility: EK-Pro GPU and CPU water blocks with G1/4" ports · Type: combo · EAN: 3831109911600

## Single pump or dual pump, same loop discipline.

### X3 and X6 – single PWM D5 pump

Single D5

One PWM-controlled D5 pump driving the loop, with three- or six-way manifold outputs depending on chassis density. The single-pump configuration suits typical workstation builds where heat rejection capacity tracks GPU count.

PWM-controlled · 30 000 Pa max in the loop

### X11 – dual D5 pumps in series

Dual D5

Two PWM-controlled D5 pumps arranged in series for redundancy and headroom in higher-density workstation builds. A pump failure does not stop the loop – the second pump carries flow until the first is replaced. Eleven-way manifold output.

Pump redundancy · for dense workstation builds

## Every unit in this family shares the following.

| Specification | Value |
| --- | --- |
| Pump generation | D5 G3 – third-generation Xylem D5 pump head, PWM speed control, 23 W max. |
| Max flow rate | 1 500 L/h at zero static head · 3.5 m H₂O max head. |
| Port standard | G1/4″ throughout · compatible with EK-Pro fittings and manifolds. |
| Working pressure | 30 000 Pa max in loops with EK-Pro Pump Reservoir Manifold · 75 000 Pa max otherwise. |
| Speed control | 4-pin PWM · signal range 20–100% duty cycle · tachometer output. |
| Country of origin | Manufactured in Komenda, Slovenia. |