Heißes Angebot Regulator Complete Set XTX40 DS4 + Oct. XTX40 / Regulator Bag/ Finimeter / Inflator Hose

XTX40 DS4 Regulator Set with Octopus AT, Pressure Gauge, Inflator Hose and Regulator Bag

XTX40 DS4 Regulator: Cold-Water Demand Regulator with High Breathing Comfort and Easy Operation

The XTX40 DS4 regulator set combines an over-balanced diaphragm first stage with a pneumatically balanced second stage. This provides consistent breathing performance at different depths, while the purge button and Venturi lever allow controlled operation. The externally sealed spring chamber supports cold-water suitability, while the set already includes an octopus, a 400-bar pressure gauge, an inflator hose and a padded regulator bag.

• Over-balanced diaphragm first stage for a stable gas supply at increasing diving depths
• Pneumatically balanced second stage for smooth and comfortable breathing
• Large, two-stage purge button and easy-grip Venturi lever for controlled operation
• Externally sealed spring chamber for use in low water temperatures
• Active hygiene protection in the moulded components against various microorganisms
• Complete set with Octopus AT, 400-bar pressure gauge, 65 cm inflator hose and padded regulator bag

This high-quality complete set combines the XTX40 DS4 regulator with a precise 400 bar pressure gauge, a robust rubber inflator hose and a padded regulator bag.

DS4 Regulator First Stage: Diaphragm-Controlled, Over-Balanced and Suitable for Cold Water

• Over-balanced diaphragm design for a rapid increase in intermediate pressure during descent
• Externally sealed spring chamber for protection against dirt and ice formation
• Angled high-pressure and intermediate-pressure ports for clear hose routing
• Cold-water-suitable construction with a dry main spring chamber
• Robust construction using durable materials

The DS4 first stage uses an over-balanced diaphragm design. The intermediate pressure increases more rapidly than the ambient pressure during descent, helping to maintain a consistent breathing characteristic as depth increases. The externally sealed system keeps the main spring chamber dry and reduces direct contact between the spring chamber and the surrounding water. The angled high-pressure and intermediate-pressure ports make it easier to route the hoses safely and neatly. This makes the first stage suitable for recreational and technical diving configurations, provided the relevant manufacturer instructions and operating conditions are observed.

XTX40 Regulator Second Stage: Pneumatically Balanced Stage with Venturi Lever and Active Virus Protection

• Pneumatically balanced construction for a consistent breathing effort
• Large, two-stage purge button for precise and well-controlled operation
• Easy-grip Venturi lever with rubber coating, operable while wearing diving gloves
• Comfo-bite mouthpiece for a stable fit during longer dives
• Silicone exhaust valve to support breathing performance
• Moulded components with active hygiene protection against various bacteria, viruses, fungi, mould, yeast and algae

The pneumatically balanced XTX40 second stage compensates for pressure changes within the breathing valve, helping to provide a consistent breathing characteristic. The large purge button supports controlled air delivery, while the Venturi lever regulates air assistance during inhalation and can be adjusted to reduce unwanted gas flow. The Comfo-bite mouthpiece sits securely in the mouth due to its special design and is suitable for longer dives. The silicone exhaust valve supports the removal of exhaled air and the breathing performance of the demand regulator.

The moulded components of the second stage contain an additive which, according to the product information, provides active protection against various bacteria, viruses, fungi, mould, yeast and algae. This additive supports surface hygiene but does not replace regular cleaning, disinfection and servicing of the regulator.

Octopus AT Regulator: Alternative Air Supply with Venturi Lever and Ergonomic Mouthpiece

• Pneumatically balanced construction for a consistent breathing characteristic
• Fully adjustable Venturi control for regulating air assistance
• Comfo-bite mouthpiece for a stable fit and comfortable use
• Designed for water temperatures above 10 °C
• Directly EAN40-compatible upon purchase

The Octopus AT adds an additional breathing-gas supply to the regulator set. Its pneumatically balanced construction supports smooth breathing, while the fully adjustable Venturi control regulates air assistance and can reduce unwanted gas flow when the octopus is not in use. The Comfo-bite mouthpiece provides a stable fit. The Octopus AT is designed for water temperatures above 10 °C and is supplied as a directly EAN40-compatible version.

Slim Line Pressure Gauge: 400 bar Pressure Gauge with Fluorescent Display

• Displays cylinder pressure up to 400 bar
• Fluorescent display with black markings and shatter-resistant Lexan glass

The Slim Line pressure gauge displays cylinder pressure up to 400 bar. The white fluorescent display with clear black markings is easy to read even in reduced visibility. The lightweight, impact-resistant plastic housing protects the brass capsule. The shatter-resistant Lexan glass provides additional protection for the display.

Regulator Inflator Hose: 65 cm Rubber Hose with Standardised Connection

• 65 cm length for a flexible connection to the buoyancy compensator
• Rubber inflator hose with standard quick-release coupling and 3/8″ UNF intermediate-pressure connection

The 65 cm inflator hose connects the regulator to the inflator of the buoyancy compensator. The standard quick-release coupling is designed for connection to most commonly used buoyancy compensators. The 3/8″ UNF intermediate-pressure connection fits regulators with the corresponding connection. Check the compatibility of your equipment before installation.

Regulator Bag: Padded Bag for Easy and Secure Transport of the Demand Regulator

• Sturdy, padded regulator bag to protect the demand regulator during transport
• Adjustable shoulder strap and sufficient space for the complete regulator set

The padded regulator bag protects the demand regulator and the set components during transport and storage. The adjustable shoulder strap makes it easier to carry. The bag provides space for the regulator and the supplied components.

Frequently Asked Questions about the XTX40 DS4 Regulator Set with Octopus AT

Is the XTX40 DS4 regulator suitable for cold water, different depths and recreational diving?

The DS4 first stage is designed for use in cold water thanks to its externally sealed and dry main spring chamber. The XTX40 second stage supports consistent breathing performance at different depths. For particularly low water temperatures, the manufacturers instructions and the specific operating conditions must be observed. The Octopus AT is designed for water temperatures above 10 °C.

What are the advantages of the diaphragm design of the regulator first stage at depth and under pressure?

The over-balanced diaphragm design ensures that the intermediate pressure increases more rapidly than the ambient pressure during descent. This helps to maintain a more consistent breathing characteristic as depth increases. The sealed spring chamber also protects the internal mechanism from direct contact with the water, helping to reduce exposure to dirt and icing.

For more technical information about regulators, see our regulator glossary or the guide „What is a regulator made of and how does it work?“.

Who is the regulator set with demand regulator, octopus and pressure gauge suitable for?

The set is suitable for divers with different levels of experience, from beginners to advanced recreational and technical divers. It is intended for divers who require a complete regulator with an octopus, pressure gauge, inflator hose and carrying bag. It is supplied ready for use, subject to correct installation, inspection and servicing.

How often does the XTX40 DS4 regulator require servicing by qualified technicians?

The regulator should be serviced once a year or after 100 dives, in accordance with the manufacturers instructions. Servicing must be carried out by a qualified technician, for example at our Scubaonline regulator servicing workshop. In addition, carry out a brief visual inspection of your demand regulator before every use. Before travelling or after a longer period of storage, perform a thorough check of the mouthpieces, hoses, visible O-rings, signs of corrosion, inflator hose coupling, seals and purge button. Proper regulator care is also important; further information can be found in our guide „Cleaning, maintaining and storing diving equipment“.

Is the regulator set directly compatible with EAN40 nitrox?

The regulator and Octopus AT are supplied as directly EAN40-compatible versions and are intended for nitrox mixtures containing up to 40 % oxygen. Always observe the manufacturers instructions and the applicable local and legal regulations before use. Depending on the country, training and cylinder connection, additional requirements may apply.

What hygiene benefits does the XTX40 DS4 regulator with Octopus AT offer?

The moulded components of the second stage and octopus contain an additive which, according to the product information, provides active protection against various bacteria, viruses, fungi, mould, yeast and algae. This feature can support surface hygiene. However, it does not replace cleaning, disinfection or regular servicing of the regulator.

Is the pressure gauge easy to read in poor visibility?

The pressure gauge has a fluorescent display with clear markings, making the cylinder pressure easy to read even in poor lighting conditions.

Can the regulator mouthpiece be replaced easily?

Yes, the mouthpieces of the second stages are secured with reusable clips. This means that the mouthpiece can be replaced easily and without tools, directly at the dive site. Replacement mouthpieces are also available in our online dive shop.

Does the inflator hose fit every buoyancy compensator and every regulator?

It fits most commonly used buoyancy compensators. Most buoyancy compensators are fitted with a standard quick-release coupling compatible with this inflator hose.

With regard to the regulator connection, the hose fits all first stages with a standardised intermediate-pressure connection. It has a 3/8″ UNF thread in accordance with DIN standard EN 250 and is therefore compatible with almost all demand regulators.