Neptune Machine

• Family-owned and operated mechanical contractor and machine part manufacturer.
• Established in 1950 to serve the international marine repair industry.
• Today focuses on mechanical installations, repairs, and machine shop services for commercial and high‑rise buildings.
• Serves customers across New York City and the surrounding tri-state area.

Facility and capabilities

• Operates from a 25,000-square-foot facility at 521 Carroll Street, Brooklyn, NY.
• Modern, state-of-the-art machine shop with advanced computerized machining equipment.
• Capable of handling projects of many sizes and complexities, from small businesses to large, prestigious commercial properties.

Experience and reputation

• Over half a century of experience in mechanical contracting and engineering services.
• Background in marine engineering adapted to building mechanical and HVAC systems.
• Known for high-quality workmanship, on-time performance, and strong customer service.

Philosophy

• Focus on excellence and professionalism in every project.
• Strong family values, with an emphasis on integrity and long-term relationships.
• Staff of highly trained machine artisans, welders, and technicians dedicated to precise, reliable results.
• Commitment to staying current with industry trends and technology to better serve customers.

Facility and equipment

• 25,000-square-foot, state-of-the-art machine shop in Brooklyn, NY.
• Equipped with advanced computerized machining equipment and large industrial machines, including:
• Lathes
• Milling machines
• Boring mills
• Surface and cylindrical grinders

Testing and diagnostic capabilities

Specialized testing services and equipment include:

• Electrical motor winding analyzer
• Computerized rotating assembly tester
• Detects warpage and concentricity on rotating assemblies.
• Computerized dynamic balancing machine
• Balances impellers and rotors to demanding specifications.
• Mechanical seal finishing machine
• Measures and verifies surface flatness to extremely tight tolerances.
• Hydrostatic testing
• Allows HVAC and related equipment to be pressure tested for leaks at Neptune Machine's facility before installation.

Parts manufacturing

Neptune Machine manufactures a wide range of machine parts, including but not limited to:

• Pump casings
• Condenser tube sheets
• Discs
• Shafts
• Impellers

These services support both Neptune Machine's own mechanical projects and standalone part manufacturing needs.

Pump Sales, Service and Installation

Neptune Machine provides comprehensive pump services for commercial and industrial facilities throughout the New York tri-state area.

Pump services

• Sales and installation of new pumps.
• Maintenance and repair of existing pumping systems.
• Ability to perform field service at your location or complete turnkey equipment overhauls in Neptune Machine's repair facility.

When to call

If your system is not functioning properly, a failing or improperly installed pump may be the cause. Neptune Machine can:

• Inspect and diagnose pump issues.
• Recommend repair, overhaul, or replacement options.
• Implement solutions to restore reliable operation.

Electrical motors, controls, and testing

Neptune Machine also supports the electrical and control side of pump systems.

Services include:

• Installation and troubleshooting of motors and motor controllers.
• Load and balance testing.
• Work with float controls, pressure controls, and variable frequency drives.

Service area

• Pump and related services are provided across New York City and the surrounding tri-state area.
• Emergency support is available; see the Contact and Emergency Service document for the emergency phone number.

Welding, Fabrication and Iron Works

Neptune Machine offers welding, metal fabrication, and iron works services to support structural, mechanical, and custom metal projects.

Fabrication capabilities

• Power brakes, slip rollers, and shears capable of cutting substantial steel plate thicknesses.
• Skilled metalworkers, pipe fitters, and welders experienced in industrial metal fabrication.
• Use of welding, burning, and plasma cutting equipment to deliver precise parts and turnkey metal projects.

Typical services

On-site and facility-based services include:

• Tank fabrications
• Structural welding
• OSHA ladders, platforms, and catwalks

These capabilities complement Neptune Machine's mechanical and piping services, allowing many projects to be handled end to end.

• 24-hour emergency service phone number: 1-718-852-4100
• Use this number to reach Neptune Machine for urgent mechanical, pump, or HVAC issues that require immediate attention.

Service area

• Emergency and standard services are available throughout New York City and the surrounding tri-state area.

Facility location

• Neptune Machine operates from a 25,000-square-foot facility at:
• 521 Carroll Street, Brooklyn, NY

Non-emergency inquiries

For estimates, project discussions, and general questions:

• Visit https://www.neptunemachine.com and use the Contact section to request an estimate or service.
• When contacting Neptune Machine, provide details about your building, equipment, and issue so they can route your request to the right specialists.

Lists Brooklyn as a location. Names New York and New York City as a service area. Areas beyond these are not published.

Mechanical and ventilation services

• Design and installation of mechanical and ventilation systems.
• Repair and upgrading of existing systems, including older pumping and air systems.
• Focus on maximizing system efficiency, reducing downtime, and controlling operating costs.

Field and facility services

• Repair and installation work can be performed on site at your building or in Neptune Machine's facility.
• Rapid response for urgent issues; technicians aim to restore systems to operation quickly.

Equipment and components serviced

Neptune Machine services a broad range of mechanical and HVAC components, including:

• Motors and air compressors
• Cooling towers (installations, refurbishing, fill replacement, including drive train and gear reducers)
• Air handlers, blowers, and drives
• Coils and heat exchangers/tube bundles
• Hot water heaters
• Many types of process and utility piping and valves

Piping and valve capabilities

• Access to a wide inventory of prefabricated pipe, valves, and fittings.
• Engineering and certified welding teams can design and build custom piping systems when standard components are not available.
• Fabrication and installation of process and utility piping, including certified welding and equipment setting.

Ask anyway — the agent will say plainly that it is not published rather than guess.