How do Pneumatic Valves Work?

pneumatic valvesAir pneumatic systems demand methods of safe and precise control of actuators distinctive to their apparatus. Although the medium is fluid, as all process and hydraulic water systems are, the implementation of power is different in a variety of ways than with liquids. What is shared in the physical conductivity of any liquid medium is the need for valves to control the direction of movement, velocity, and force.

Considerations for mounting

Pneumatic valves come in both standard and non-standard mounting configurations. Non-standard valves are constructed depending on the manufacturer’s design, with port layout, operator style, and mounting options unique to the finished product. They can be separate stacks mounted in a row or subplate mounted. Most manufacturers do fitting differently, so, it is best to take a careful look at products appropriate to a specific application.

By a stroke of felicity, most manufacturers have standardised pneumatic valves that suit some specifications, such as staggered oval ports. This means that almost all manufacturer’s valves will fit each other’s subplate or manifolds. Port and electrical connections are definitely standardised with most valves. NPT ports are standard, but many new valves today come with push-lock fittings on the subplate itself.

Electrical connectors for standardised valves are frequent connections with DIN, mini-DIN, or field bus variants. This makes the operation of a dozen valves as simple as one connector.

Flow controls

Another common use with pneumatic valves are systems to control flow. There are fewer types of flow valves available compared to other pneumatic types, but most circuits apply them to make for better adjustment to the cylinder or motor velocity. Controlling velocity in pneumatic systems is more complicated than with hydraulic systems since pressure differential between the work ports of a cylinder plays a more prominent part.

Pressure release

Relief valves for pressure release control pressure at the inlet port by releasing pressure out. Relief valves are commonly used only in receivers or air storage devices such as accumulators, to prevent excessive pressurisation. Because of this, relief valves are also called safety valves and are not used anywhere else except for the air preparation stage in a system.

Master Mac 2000 Valves

So, when it comes to valves, Master Mac 2000 P/L has expanded to be one of Australia’s largest locally owned pneumatic and process automation companies. Master Mac 2000 is the distributor of quality brands like Rotoflux, American, Piab, Mac, Tolomatic, Univer, and many more stocked in Brisbane.

Univer valves are standard-based pneumatics that come with either mixed or spool system for heavy or other applications. Pressure control valves, compact valves, flow control valves, and accessories are available.

Contact Master Mac 2000 today for more information by visiting their website,

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About MasterMac2000: Your Trusted Pneumatic & Process Automation Partner.

LEADING THE INDUSTRY: Established in 1989, MasterMac2000 has grown to become one of Australia's largest privately owned pneumatic and process automation companies. We stock top-quality brands like Univer, Mack, Tolomatic, Mac, Piab, American, and Rotoflux in Brisbane.

SERVING QLD & NORTHERN NSW: We proudly service Queensland and Northern New South Wales for all your pneumatic and process equipment needs. Our mission is to provide the best pre and post-sales support while actively expanding our client base.

SOURCING HARD-TO-FIND PARTS: Not only do we stock quality components, but we also excel at sourcing those elusive, hard-to-find parts. With our extensive database and global network of contacts, getting the parts you require is as easy as a call to our highly skilled, professional sales team.


  • Decades of expertise in pneumatics & process automation
  • Carefully curated selection of world-class brands
  • Exceptional sourcing capabilities for speciality parts
  • Knowledgeable sales staff dedicated to finding solutions
  • Unwavering commitment to customer service excellence

About The Author

Stuart Havill

Stuart Havill is the owner and manager of MasterMac2000, Queensland's largest privately owned pneumatic and process valve company.

With his early working career as a maintenance fitter for Boral in 1992, Stuart has spent his life in the field of pneumatics and process equipment. He gained extensive experience in plant design, maintenance, repairs, fabrication, and site management.

In 1996, he transitioned to a pneumatic sales technician role at MasterMac2000, where he excelled in key account management, providing cost-effective solutions, and managing a sales team of 9 employees.

Since 2002, Stuart has been the manager at MasterMac2000, overseeing the company's growth and establishing it as a leader in pneumatic automation and process valve engineering. His expertise spans customer training, CRM setup, industrial compressor sizing and installation, and turn-key project management.

Under Stuart's leadership, MasterMac2000 has been servicing the industry since 1988, with 5 full-time sales representatives covering northern rivers NSW, Queensland, Northern Territory, and PNG. The company prides itself on providing the best-priced solutions to all customers in the marketplace.

View Stuart’s LinkedIn profile to learn more about his expertise in pneumatics and process equipment.

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