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Our Best Advice

Customers rely on us to help select components, design complex systems, to manufacture, install, and maintain machinery and equipment. We offer our best advice through our blogs.

The Hope Group

The Hope Group is an authorized full-line Parker distributor featuring hydraulic, pneumatic, fluid connector, and sealing products for OEM and MRO applications.

Sorensen Systems is a designer/builder of custom systems providing clean water, renewable energy sources, and technologically advanced process systems for industry.

Hope Air Systems is an authorized distributor for Kaeser Compressor featuring energy efficient rotary screw compressors as well as a designer/builder of skid-mounted packaged compressed air systems.

Hope Service can dispatch its field service fleet of vehicles and experienced, factory-trained technicians to provide emergency and routine field service to its hydraulic, electrical, and compressed air systems customers.

The Hope Group owns and operates seven Parker Stores at its branch locations providing "while you wait" replacement of hose assemblies and immediate on-hand access to 3,000 Parker fluid connector parts.

The Hope Group provides 24 hour access to $150 million of Parker parts through its eCommerce website,, offering one or two-day shipping of all your hose & fittings, hydraulic, pneumatic, valve, and filtration needs.

iPower Distribution Group of New England provides supply chain consulting and implementation through streamlined procure-to-pay process, vendor managed inventory (VMI), Kanban, and in-plant buyer-planner services.


Hope Air Systems Home › Buy From Us › Air Compressors
Our Best Advice

Peter Rhoten   10 Worst Things You Can Do To Your Air Compressor
Peter Rhoten
Hope Air Systems

Ray-McCann   Monitoring Operational Conditions In The Palm Of Your Hand
Ray McCann
Fluid Power Specialist

mike-gardella   Sorensen Systems Designs Aerospace Fluid Control Test Stand
Mike Gardella
VP Engineering & Mfg

Donna-Tibbetts   One of Our Stores is Open 24 Hours a Day!
Donna Tibbetts
Operations & Service Mgr

doug-markham-ipower-new-england   When Should Materials be Stocked at Point of Use?
Doug Markham
President, iPower NE

Rotary Screw
Rotary screw compressors operate on the principle of positive displacement. Filtered air enters the inlet of the airend where two rotors un-mesh. As the rotors re-mesh, the space is reduced on the opposite side of the airend and thus, the air is compressed and moved to the discharge port.

Reciprocating compressors are a positive displacement machine, which means using a piston within a cylinder they increase the pressure of the air by reducing its volume, thus taking in successive volumes of air that is confined within a closed space and elevating this air to a higher pressure

Packaged Air Systems
In recent years, various manufacturers have been stepping up their design and production of "packaged" air systems. It might be more correctly defined as "pre-packaged" systems. These come from the factory with many of the complimentary components for a complete system already mounted on a skid, ready for installation.

Oil-Free compressors are available as rotary screw, piston, and centrifugal designs. The rotary screw utilizes specially designed air ends to compress air without oil in the compression chamber; the centrifugal is oil-free by design with oil lubricated running gear separated from the air by shaft seals and atmospheric vents.

PET Packaged Systems
Hope Air Systems has over 40 years experience in designing skid-mounted PET package systems to meet a wide range of requirements, including expanded focus on offerings from 1,000 L/M to 40,000 L/M at 40Kg. We have extensive experience with every type of installation, including screw/booster, reciprocating 3-stage, centrifugal, and oil-free screw booster systems.

High Pressure
High-quality high pressure air compressors by Sauer run at ranges from 100 to 5,000 PSI. Engineered for continuous operation in extreme environments, the 3-stage design lowers cylinder compression temperatures, and reduces the pressure ratio per cylinder.


The Hope Group, a division of KLX Inc. | 70 Bearfoot Road, Northborough, MA 01532

Phone: 508-393-7660 | Fax: 508-393-8203 | Email

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