Professional and Technical Expertise

Parker's pneumatic fittings and valves help customers improve throughput, increase efficiency, design smaller footprints, achieve faster assembly, and provide connections with reduced leak paths.

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Unique Solutions for a Range of Industries

Parker designs and manufactures fittings, hoses, valves, air couplers, and other connectors that provide unique solutions for a wide variety of applications, markets, and industries. Our customers appreciate the intrinsic value of our products and our employees' professional and technical expertise. Learn how our stainless steel, thermoplastic and brass fittings, couplers, and valves address applications in various markets and download our catalogs for more information.

Featured Automation Connectors

Parker designed its superior push-to-connect fittings, valves, tubing, flow controls, and accessories to engineer your success. We offer pneumatic fittings and connectors in several materials, in a wide variety of configurations, and in metric and standard sizes. Parker guarantees the quality and traceability of every connector we sell and our products meet or exceed national and international standards.
Parker Prestolok PLP nickel-plated brass fittings reduce assembly time by eliminating the use of a sleeve and tightening of a nut required in compression style fittings. Simply push the tubing into the fitting until it bottoms. To disassemble, press the release button, hold against the body and pull tubing from the fitting. A thread sealant is applied to all male threads eliminating the possibility of system contamination from PTFE tape.
Prestolok PLP Nickel-Plated Brass Fittings
Composite push-to-connect fittings provide a simple way of connecting tubes to a fitting. Parker Prestolok composite fittings reduce assembly time by eliminating the use of a sleeve and tightening of a nut. All Prestolok PLP composite fittings are 100% leak tested and date coded to guarantee quality and traceability.
Prestolok PLP Composite Fittings
Parker's Prestolok PLM fittings have a high phosphorous, FDA compliant, electroless nickel plating which is resistant to water, harsh detergents and other aggressive fluids. Prestolok PLM fittings are fitted with a FKM O-ring protected by a washer and can be used with all liquid and gaseous fluids compatible with these components. Prestolok PLM fittings reduce assembly time by eliminating the use of a sleeve and tightening of a nut required in compression style fittings.
Prestolok PLM Metal Fittings
Fittings that come in contact with food must be corrosion resistant, non-toxic, non-absorbent and capable of being washed down and disinfected. Parker's Prestolok PLS Stainless Steel fittings have a 316L stainless steel body and washer and a 303L stainless steel collet. The Prestolok PLS fitting uses nutriment grade materials and USDA NSF H1 grease conforming to FDA standards, permitting permanent contact with food. Prestolok PLS has a hygienic design aimed at reducing retention zones for safe and easy cleaning.
Prestolok PLS Stainless Steel Tube Fittings
Parker flow control regulators offer precise adjustment, accuracy and compactness providing the solution for all applications. Flow control regulators are available with polymer or nickel-plated brass bodies and external or recessed adjustment screws. By allowing a higher maximum flow than standard regulators as well as precise adjustment, this range of flow control regulators helps you improve your productivity and performance with accuracy.
Flow Control Valves

Transportation Connectors

For all air brake, engine, trailer or other transportation applications, our high-performing, leak-free, DOT fittings, tubing, hoses, valves and other accessories meet and exceed FMVSS571571.106 and SAE J2494-3 requirements. See how Parker can help you reduce costs, speed up assembly, and outperform the competition with our custom and engineered US manufactured products.
Parker's push-to-connect (PTC) fitting is a composite push-to-connect air brake fitting that meets D.O.T. and SAE specifications and reduces assembly time versus compression-style fittings. Engineered to meet the demands of all truck/trailer, mobile, and rail systems worldwide, Parker’s PTC fittings reduce assembly time versus compression-style fittings by 90%.
Composite Push-To-Connect Fittings
Being the world's leader in leak-free technologies, Parker's Prestomatic fitting is a robust, all brass push-to-connect air brake fitting that meets SAE and D.O.T. specifications. Designed for all D.O.T. truck and trailer applications, Prestomatic’s innovative collet design ensures positive grip on the tubing and the rigid stainless steel tube support stays in place for superior side load leakage resistance. The Brass PTC Fitting is ideal for use in air brake systems on semi-trucks, trailers, buses, mobile equipment, and farm implements.
Brass Push-To-Connect Fittings
Parker's NTA DOT compression style air brake fittings are DOT-approved brake line compression fittings meeting D.O.T. FMVSS 571.106 specifications and the functional requirements of SAE J246 and SAE J1131. NTA fittings have a pre-applied thread sealant on all male pipe threads. Electroless nickel-plated bodies can be used with bio-diesel. All Prestolok PLM fittings are 100% leak tested and date coded to guarantee quality and traceability.
NTA Brass Compression Fitting
Parker's brass ball valves are designed to provide years of service at an economical price and are available in various end configurations and options. These ball valves are intended for use in the fully open or closed positions.
Brass Ball Valves from Parker Hannifin

Featured Water and Beverage Connectors

Parker is a trusted partner in the water treatment and filtration market, helping to increase system efficiency and reduce assembly time and leak paths. Our thermoplastic push-to-connect fittings, valves, cartridges, tubing, and accessories offer new ways to create value. We are committed to providing reliable quick connect solutions for your water and beverage application.
Parker's TrueSeal™ fittings are lightweight and field attachable, and connect to tubing without the use of tools. TrueSeal offers a robust push-to-connect fitting ideal for use in food, potable water, chemical, filtration, and beverage industries.
TrueSeal™ Fittings from Parker
Parker's LIQUIfit™ fittings ensure reliable and compact connections for liquid transfer applications. LIQUIfit is a plastic quick connect water fitting that offers an "eco-designed" innovative alternative for water applications; no fluid contamination occurs and environmental protection is guaranteed.
LIQUIfit™ Fittings
Parker's Par-Barb® fittings are specially engineered with a four-barb design that generates maximum gripping and sealing power when combined with a hose clamp. These plastic barbed tube fittings meet FDA and NSF 51 requirements and are ideal in medical, pollution control, and food and beverage applications, as well as irrigation, instrumentation, reverse osmosis, and deionized water systems.
Par-Barb® Fittings
Parker's Fast & Tite compression style fittings install in seconds without tools for a leak proof seal without clamps or adjustments. Fast & Tite meets FDA and NSF-51 requirements for food contact.
Parker Fast & Tite Fittings
Parker's polypropylene ball valves corrosion resistant design make them ideal for water filtration units, coffee and beverage machines and various other fluid applications. The compact design allows for easy assembly and access where space is at a premium.
Polypropylene Ball Valves from Parker

Compressed Air Aluminum Piping Systems

Parker Hannifin, the pioneer in compressed air aluminum piping systems, builds on its history of innovation by manufacturing the largest range of diameters and products through its Transair® line. Transair offers a cost effective, innovative and energy efficient aluminum compressed air pipe system that is easy to assemble, change or modify.
Transair aluminum pipe for compressed air, vacuum and inert gas systems offers the advantages of being lightweight, strong and corrosion-resistant. Transair pipe and fittings are reusable, allowing for quick system modifications. All connectors are 100% recyclable, silicone-free, and made of non-flammable materials.
Aluminum Pipe for Compressed Air Systems
Transair's various quick-connect fittings take into account the specific requirements of each diameter and provide the user with an optimum safety coefficient and easy connection. The quick connection technology of Transair allows systems to be modified and reconfigured within minutes, instead of hours or days with traditional materials. This technology minimizes production downtime and increases process productivity and efficiency.
Connectors – Quick Connect Fittings Technology
Transair Conditioning Monitoring's wireless sensors and cloud-based software allows you to monitor your compressed air system remotely and from anywhere. With our line of pressure/vacuum, humidity, temperature, power, and flow sensors you can prevent costly downtime while identifying system improvement areas.
Transair Condition Monitoring
With a large product range, Transair complements your compressed air, inert gas or vacuum piping projects, whether it is a primary or secondary system, from the smallest workshop to a large industrial facility. With over 750,000 installations worldwide, Transair is the trusted brand of aluminum piping, quick connect fittings, condition monitoring sensors and software. Learn more about solutions for the automotive, food and beverage and material handling industries.
Transair aluminum piping fits a range of markets

Quick Links for All Industries

Parker Fluid System Connectors Division designs and manufactures connectors and accessories that provide unique solutions for a variety of markets and industries, from pneumatic automation and DOT transportation fittings to connectors for water/beverage industry. Click any of the links below to learn how our fittings, valves, cartridges, piping systems and accessories address a range of applications.


Parker Hannifin Corporation Fluid System Connectors Division
300 Parker Drive
Otsego, MI 49078 USA

More Locations

Phone  +1 (269) 692-6555
Fax +1 (269) 694-4614