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Hiwi Pressure Regulator

Hiwi Pressure Regulator

  • Can be used in combination with returnable cylinders
  • Suitable for use with inline atomizers
  • With highly precise fine needle valve
  • Manometer for working and cylinder pressure included
  • Precise CO2 supply with bubble counter control
In stock, only 15 left
Free shipping on orders over € 60,- within Germany
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1-3 business days - order today and we’ll deliver next week on Tuesday at the earliest
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99.
90
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Description

This high-quality pressure regulator is used to reduce the cylinder pressure of approx. 54 bar to a working pressure of approx. 1 to 3 bar. By combining the working pressure gauge and the cylinder pressure gauge, the CO2 supply can be adjusted very precisely, and you can immediately see when it is time to refill the cylinder. The integrated fine needle valve allows very precise adjustment of the CO2 supply for the aquarium. The included bubble counter also enables visual monitoring of the CO2 dosage and helps to fine-tune the supply accurately.

Please keep in mind that all components of the pressure regulator have been permanently bonded by the manufacturer. These can not be unscrewed without causing damage. If the needle valve is removed, the warranty will be void. The hose connection on the fine needle valve is an exception. Due to its fine thread, it is not bonded, so that in the event of a defect, it is not necessary to replace the entire fine needle valve, but only the hose connection.

In addition to this pressure regulator, a dual-stage version is also available, which can be used in aquariums with particularly sensitive fish in order to completely prevent excessive CO2 levels: Hiwi Double Stage Pressure Regulator

The Hiwi pressure regulator is also available with a permanently installed solenoid valve (SV) for night shut-off and with a check valve (CV): Hiwi Pressure Regulator + SV & CV

Manual (in German Language) - - download PDF

Features

  • Connection for CO2 tubing with metric thread (M6)
  • Designed for use with refillable CO2 cylinders
  • Thread: W21.8 x 14G
  • Includes seal
  • Standard thread for Europe, the United Kingdom and Taiwan (BS341 / DIN477 / W21.8)
  • Includes German operating instructions
  • Suitable replacement seal Hiwi seal soft
  • Includes bubble counter for visual CO2 control

Application

Please use the pressure regulator only after reading the operating instructions, which are linked above.

  • Ensure that the pressure regulator is only used with a CO2 cylinder.
  • Turn the working pressure adjustment screw (operating instructions 4) anticlockwise.
  • Close the fine needle valve (operating instructions 5) by turning it clockwise. CAUTION: Tighten only slightly!
  • Position the pressure regulator so that the pressure gauges are facing upwards.
  • Attach and tighten the pressure regulator to the CO2 cylinder using the union nut (operating instructions 7). The union nut must be tightened by hand only! Do not use tools!
  • Ensure that the seal is correctly seated and that the sealing surfaces are clean. If the seal is damaged or lost, please replace it.
  • Fill the supplied bubble counter with water and integrate it into the CO2 system to monitor the bubble rate and precisely adjust the CO2 supply.

Dimensions

Hiwi Pressure Regulator
Width 135 mm
Height 110 mm
Depth 120 mm
Distance from connection 115 mm

Hiwi

Hiwi

Hiwi is a renowned German manufacturer of CO2 pressure regulators. The highest level of quality and a long useful life are in their focus. These high quality standards do not exclude attractive prices, though.

Especially in aquascaping, the addition of CO2 for the plants is something very basic, and thus it is really important to choose good CO2 supplying equipment. Hiwi meets even the highest quality standards in every aspect und is thus the best choice when it comes to CO2 pressure regulators.

Manufacturer information

Manufacturer
Name Hiwi Getränkearmaturenbau & -handels GmbH & Co. KG
Street Felix-Wankel-Str. 5
City 53881 Euskirchen
State Nordrhein-Westfalen
Country Deutschland
E-mail info@hiwi.de
Website www.hiwi.de

General information

Item no.
120.0006.01
EAN
Weight 1,00 kg
Shipping weight 1,90 kg

Questions and answers about Hiwi - Pressure Regulator

Do you have questions about this product? Ask other customers or our support team!

Hello, which is the right seal? The hard one or the soft one from Hiwi?
Translated from German
Niklas Rude
May. 2023
Aquasabi Support
Jun. 2023
The soft seal is the one to use for this pressure reducer.
Translated from German

Customer reviews

This item has been rated 4.9 out of 5 stars
23 Reviews
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5 Stars(20)
4 Stars(3)
3 Stars(0)
2 Stars(0)
1 Star(0)
Andreas S.
Excellent quality
This item has been rated 5 out of 5 stars
15th December 2025

The quality of the pressure reducer is flawless, the fine adjustment is truly fine and smooth.

Translated from German
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Top Qualität

Die Qualität des Druckminderers ist tadellos, Feineinstellung wirklich fein und leichtgängig.

Andreas S.
Excellent quality
This item has been rated 5 out of 5 stars
15th December 2025

The quality of the pressure reducer is flawless, the fine adjustment is truly fine and smooth.

Translated from German
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Top Qualität

Die Qualität des Druckminderers ist tadellos, Feineinstellung wirklich fein und leichtgängig.

Wilhelm S.
Highly recommended
This item has been rated 5 out of 5 stars
9th January 2022

Solid construction, very good instruction manual. No tools needed for setup. Flawless function. Very satisfied with the purchase. Highly recommend buying it, and prompt delivery.

Translated from German
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Absolut empfehlenswert

Solide Bauart, sehr gute Bedienungsanleitung. Kein Werkzeug zur Inbetriebnahme notwendig.

Funktion einwandfrei. Bin sehr zufrieden mit dem Kauf.

Absolute Kaufempfehlung und prompte Lieferung. Aquasabi gehört zu meinen Topfavoriten wenn es um Aquaristikhandel geht.

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