Roma type F hose holder 3/4"x20 – DVGW – code: 7158E*20 – Maestrini

Roma type F hose holder Maestrini 3/4″ x 20 in CR anticorrosion brass

The Roma F type hose fitting Maestrini is a fitting designed to create practical and tidy connections between a threaded line and a flexible pipe. This version is indicated as 3/4″ x 20 and is made of CR anticorrosion brass, a typical choice for applications in plant engineering where long-term reliability and good resistance in demanding operational contexts are sought. The product is also indicated with DVGW and identified by the Maestrini code 7158E*20.

In nautical and onboard plant engineering, components like this hose holder are often selected for maintenance, restoration, or installation of service lines, where it is important to use fittings consistent with the plant configuration and existing materials.

Features and construction details

This item belongs to the family of hose holder, i.e., fittings designed for the insertion of a flexible pipe on one shaped end (hose fitting) and for coupling with a threaded line on the other end (“Roma F” type configuration).

Product identification data

• Type: Roma F type hose fitting
• Size: 3/4″ x 20
• Material: CR anticorrosion brass
• Marking/indication: DVGW
• Product code: 7158E*20
• Manufacturer/Supplier: Maestrini S.R.L. Sole Proprietorship

CR anti-corrosion brass

The manufacturing in CR anticorrosion brass makes the fitting suitable for contexts where components are exposed to humidity, splashes, or typical technical plant conditions. The choice of material is an important element to maintain connection quality over time and reduce the need for frequent replacements, especially when the fitting is installed in not immediately accessible points.

Typical applications in plant engineering and nautical

The Roma F type hose fitting is commonly used when it is necessary to connect a flexible hose to a part of the system with threaded connection.

• Routine maintenance of lines with flexible pipes, where worn sections or outdated fittings are replaced.
• Restoration of connections in technical compartments, lockers, or engine rooms, where accessibility may require simple and robust solutions.
• Construction or modification of service lines, when integrating a flexible section with already present threaded components.
• Interventions on technical systems in civil or industrial fields, when a brass hose fitting with clear manufacturer identification is desired.

The correct application always depends on the type of fluid, operating conditions, and compatibility with the rest of the system. In case of doubts, it is good practice to compare the size and configuration with existing components or with the system diagram.

Operational advantages

While maintaining a conservative approach and without introducing undeclared performance, it is possible to highlight some typical practical advantages of a corrosion-resistant brass hose fitting, useful in technical contexts:

• Simple integration between tube and threading: allows transitioning from a threaded connection to a flexible tube in an orderly manner.
• Material suitable for demanding contexts: CR corrosion-resistant brass is a common choice for systems where long-term durability is sought.
• Clear component identification: the presence of code 7158E*20 facilitates reordering and spare parts management.
• Practical solution for maintenance: useful when replacing fittings or restoring lines without redesigning the system.

Usage and installation notes

To achieve a reliable connection, it is important that the choice of hose fitting is consistent with the tube size and the threading of the counterpart. Below are some general notes (not replacing your system's procedures):

Checks before installation

• Size check: check that the size 3/4″ x 20 be compatible with the line and the tube to be installed.
• Tube condition: use a hose in good condition, with a clean cut and without crushing in the insertion area.
• System compatibility: assess material compatibility with the fluid and other present components (valves, fittings, existing hose fittings).

Practical indications

• Tube insertion: fully and evenly insert the tube onto the hose fitting, avoiding twists.
• Mounting: provide a clamping system suitable for the type of tube and application (e.g., appropriate clamp), according to good installation practices.
• Sealing on the threaded side: adopt the sealing solution provided by your system standard and the type of threading of the counterpart.
• Final check: after installation, perform a functional check of the system to verify the absence of leaks.

Spare parts and identification

For replacement requests or to standardize onboard components, refer to the Maestrini code 7158E*20 and the description Roma type F hose holder 3/4″ x 20 in CR anticorrosion brass. This helps reduce ambiguity during procurement and maintain consistency among installed components.

FAQ – Frequently Asked Questions

What is the product code of the Maestrini hose holder?

The supplier product code is 7158E*20.

What size is this Roma F type hose fitting?

The indicated size is 3/4″ x 20.

What material is the fitting made of?

It is made of CR corrosion-resistant brass.

Does this hose connector carry the DVGW indication?

Yes, the product description includes the DVGW indication.

For what uses is a Roma F type hose connector indicated?

It is typically used to connect a flexible hose to a threaded connection in technical systems, for example in maintenance or plant installations where a hose fitting is needed.

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