Just like an engine of a car, as the pistons rise, they press the air into a tighter space which creates pressure.
Compressors can have 1 stage or 2 stages of compression.
Single-Stage Piston air
is compressed once and then discharged. Max Pressure = 130 PSI. Two-Stage Piston air is discharged once in a
low pressure side and again in a higher pressure side before discharge. Max pressure = 175 PSI.
Advantages of Piston Compressors:
- Low Price
- Easy to Understand
- Simple to Maintain
Duty Cycle: Piston compressors generate a lot of heat during the compression process, they are restricted to the
amount of time they can operate. This is what we can the "duty cycle". Single-stage pistons normally have a 50%
duty cycle and two-stage pistons have a 75% duty cycle.
Rotary screw compressors act like
superchargers in a sports car. Two helical rotors match each other and rotate together. As they do, air is squeezed into a smaller and
smaller cavity, creating increasing pressure. A thin film of oil lubricates the rotors and keeps them from overheating.
Advantages of Rotary Screw Compressors OVER Piston:
- Runs cooler so it can operate continuously - More stable pressure - Air always available when you need it - Low sound
level- 7 times quieter than a Piston - Better work environment for your team - Lower Oil Carryover - Reduces product
contamination - BEST choice for painting - Better for the environment
Sizing the Compressor
To size the compressor, we need some basic information.
1. Maximum Operating Pressure: - Look at the pressure ratings on the equipment - Are there any known pressure issues?
2. Total Air Requirements (Total cfm) - Add up all the cfm ratings on the equipment (they are listed on all tools) -
Do you want to wait on the compressor for air? - How many tools are you using at once? - Have existing compressors and storage tanks?
Calculate the Correct Air Requirements 1. Determine the total air requirements (in cfm) for all equipment 2. Make
adjustments: - Add 10% for leaks and growth in business - Use consumption x 1.5 for piston compressor - Use consumption x 1.0 for rotary
screw 3. Determine final air requirement in cfm for the equipment 4. Check your air requirements with the "benchmarks" below on the number
of workers
2.5HP 50L Oil-Free Dental Air Compressor Clean Air Class Zero Certified
Who we are and how Ash Air can help your business!
Ash Air has been around in New Zealand since 1979, and we’ve grown into a nationwide company with international support and a
reputation for quality and reliability.We look after all things compressed air for your business!
Reciprocating, Screw, air compressors
Vacuum pumps
Nitrogen
An extensive line of air treatment components
Ash Air's range of Chicago Pneumatic, Alup, Pneumatech, and Quincy compressors are used extensively around the world in industries
ranging from oil and gas to food, automotive and farming, and we bring you these world class compressors here in the land of the long white
cloud.Our technicians are compressed air equipment experts and are dedicated to addressing customer needs. Supported by a 13 locations
nationwide, Ash Air offers one of the widest selections of compressed air equipment and parts available today in New Zealand.
Reliability and Efficiency
With Ash Air compressors, you can count on reliability and high performance for even the most demanding applications. We focus our
efforts on the following:
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and oxygen are commonly utilized as assist gases, each with its own unique properties and applications. Understanding the characteristics of
both gases, will help you to make an informed decision to ensure precision, efficiency, and cost-effectiveness in your operations.
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Say goodbye to the high cost and hassles of nitrogen bottle deliveries. Producing your own nitrogen is the smart solution. Ash Air is here to help you with your industrial gas needs.
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Mobile air compressors are portable, towable compressors particularly useful for applications that suit the construction and roading
industry! You'll often see a mobile compressor being used for sandblasting, irrigation blow-outs, and for quarrying tools such as pneumatic
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Did you know that Chicago Pneumatic helped man land on the moon? Notice in this photo of the Apollo 11 landing what appear to be
"soccer balls" on top of the capsule. They were inflated through a compressor specially developed by Chicago Pneumatic for
NASA.
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Your company purchased an air dryer for your compressor, now where should you install it? One of the most common things we see in the
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Wrong.
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