EL/Pump Jet 4 B, 230/400v T, 50hz, 0.75 kw - code: 01J4B3 - Gianneschi Pumps and Blowers

Gianneschi Jet 4 B Self-Priming Electric Pump (230/400V)

The electric pump Gianneschi Jet 4 B is a self-priming jet solution designed for intensive use in nautical and industrial environments. Thanks to the integrated system with diffuser and Venturi tube, this model boasts an exceptional self-priming capacity up to 8 vertical meters. The “B” configuration is characterized by a robust bronze construction with stainless steel support, ideal for handling fresh and seawater.

Identified by the supplier code 01J4B3, this three-phase version from 0.75 kW guarantees consistent performance and high reliability for critical onboard services.

Technical Specifications and Identifiers

• Manufacturer: Gianneschi Pumps and Blowers S.R.L.
• Model: Jet 4 B
• Supplier Code: 01J4B3
• Power Supply: Three-phase 230/400V – 50Hz A.C.
• Nominal Power: 0.75 kW
• Rotation Speed: 2900 RPM
• Protection Rating: IP 44 (A.C. Version)
• Insulation Class: F

Dimensions and Weights

• Ports (Suction DNa / Discharge DNm): 1″ / 1″ (Gas BSP)
• Overall Dimensions (w x l x h’): 460 x 185 x 193 mm
• Weight: 22 kg

Hydraulic Performance (Data at 50Hz / 2900 RPM)

The Jet 4 B offers an ideal head curve for systems requiring high pressure:

Construction Features (Configuration B)

Gianneschi's choice of materials ensures maximum longevity even in the presence of saltwater:

• Pump Body: Bronze with support in Stainless Steel.
• Impeller: Special alloy of Ottone.
• Shaft: Stainless Steel AISI 316.
• Internal Components: Diffuser and Venturi tube in polycarbonate.
• Mechanical Seal: High quality in Ceramic, Graphite and NBR.

Onboard Applications

The pump is certified for the following technical uses:

• Pressurization: Water lifting for autoclaves and hydrofor systems.
• Maintenance: Chain washing and bridge washing.
• Security: Component for auxiliary fire-fighting systems.
• Services: Power supply for air conditioning systems and WC circuits.

Operating and Installation Notes

Intelligent Self-Priming: The pump requires filling the body only at the first start or after long periods of inactivity. Subsequently, it self-primes even with an empty suction pipe.

Technical Tips: To optimize performance and protect the system, it is recommended to install a filter and a check valve on the suction port.

Warranty: 2 years (according to Gianneschi general sales conditions).

Technical data obtained in the test room with a suction height of 1 meter.

FAQ – Frequently Asked Questions

Is the Gianneschi Jet 4 B suitable for seawater?

Yes. The card indicates that it is ideal for services where the use of seawater is necessary, as well as for the circulation of seawater/freshwater.

Is this pump self-priming?

Yes. It is described as self-priming, with diffuser and built-in Venturi tube.

What applications are planned for this model?

Among the reported applications: seawater/freshwater circulation, deck/chain washing, use in autoclaves (hydrofor) and uses in dedicated technical systems, including fire-fighting contexts according to the project.

Which materials are recommended for the pump body and impeller?

Configurations with bronze or stainless steel pump body are shown (depending on the version). For the Ecojet/Jet series, a brass impeller is indicated; for the Ecoinox series, a Noryl impeller is indicated.

What types of connections are planned?

The datasheet shows port sizes from 1” to 1” 1/2 BSP, depending on the configuration. It is advisable to check the version associated with code 01J4B3 for compatibility with the system.