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Q345R Air Tanks

Stable Pressure, Cleaner Air, Lower Maintenance Cost

Vertical air receiver tanks built from Q345R pressure vessel steel – high‑strength, low‑alloy, excellent weldability and fatigue resistance. Absorb pulsation, stabilize flow, and knock out bulk moisture before your dryer and filters. This significantly reduces the moisture load on downstream drying and filtration equipment, extending their service life and lowering maintenance costs.

Compact vertical footprint saves valuable floor space. Each tank comes with a certified safety valve, precision pressure gauge, and easy‑access drain. Anti‑corrosion coating inside and out protects against rust and extends service life even in humid environments. Robust certification, plug‑and‑forget reliability – ready for 24/7 operation. 

Whether you are running a single compressor or a complex plant-wide air system, these tanks provide the buffer capacity you need to maintain stable pressure during peak demand and prevent disruptive pressure drops.

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Features

These models provide a typical return on investment between 6 to 24 months.

Simple Installation

Plug-and-play system can be installed easily with minimum cost and interruption.

Small Footprint

Compact design allows installation in spaces too small for twin tower generator systems.

A-Series Specifications

ModelVolume
(ft³/gal)
Design Pressure (PSI)Design Temp
(°F)
Diameter
(IN)
Overall Height
(IN)
Weight
(LB)
Inlet/OutletMaterialService
0.3/0.810.6 / 7911630221.760.7165DN40Q345-RAir
0.6/0.821.2 / 15912030227.682.7397DN40Q345-RAir
1.0/0.835.3 / 26412030231.594.5573DN40Q345-RAir
2.0/0.870.6 / 52812030243.3111.7767DN40Q345-RAir
4.0/0.8141 / 105611623055.1113.0 1389DN40Q235-BNitrogen
20/0.8706 / 528012023094.5200.86540219*6Q345-RAir

Specifications

TypeVertical air receiver tank
Design pressure range116 – 120 psi
ConnectionNormally 1.6″ (DN40) internal threaded; large volume (20 m³ / 706 ft³) uses steel pipe welding (approx 8.6″ OD)
MaterialMainly Q345‑R (pressure vessel steel); 4.0 m³ (141 ft³) nitrogen tank is Q235‑B
ServiceAir (standard); 4.0 m³ (141 ft³) dedicated for nitrogen
Design temperature range230 – 302 °F (not specified for 0.3/0.8 model)
Standard accessoriesSafety valve, pressure gauge, drain valve


Frequently Asked Questions

What is a nitrogen generator, and how does it work?

A nitrogen generator is a device that produces nitrogen gas (N₂) from compressed air. It uses separation methods, such as Pressure Swing Adsorption (PSA) and Membrane Technology, to remove oxygen and other gases, leaving purified nitrogen gas.

What are the advantages of having a nitrogen generator over purchasing bottled nitrogen?

Cost savings: Long-term savings are achieved by eliminating the recurring costs of purchasing bottled nitrogen.

Convenience: Continuous on-site nitrogen generation eliminates the need for deliveries and reduces the risk of running out of nitrogen.

Customization: On-demand nitrogen generation allows you to tailor the flow and purity to your needs.

What is the difference between PSA and membrane nitrogen generators?

PSA (Pressure Swing Adsorption): Uses carbon molecular sieves to separate nitrogen from other gases in compressed air under varying pressure.

Membrane Technology: This technology uses selective permeable membranes to separate nitrogen from oxygen based on the size of the molecules.

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