South Gate Engineering manufactures both standard and custom A.S.M.E. Code Air Receivers for new and existing compressed air systems. Air Receivers are provided in all compressed air systems for the following reasons:

1. Storage capacity is essential to provide compressed air when short-term demand exceeds the compressor output.

2. Pulsation caused by the compressor operation is reduced as a result of the proper selection of the air receiver.

3. Adequate storage allows the compressor to cycle and not operate continuously.

4. Moisture and oil entrained in the air are allowed to settle to the bottom of the air receiver where it can be periodically blown off.
Standard air receivers are available in both 125 and 150 PSI. Custom air receivers can be ordered with any pressure rating designed. All vessels are manufacture in accordance with the A.S.M.E. Code, Section VIII, Division 1 for unfired pressure vessels. Consult the factory with the specification requirements for design and pricing.

Selection:
The first step in designing compressed air system focuses on determining the systems demand requirements. Once the demand has been determined, a compressor with sufficient output can be selected. It is recommended that the air receiver be sized to best supplement the air compressor operation. A common approach is based on one minute of storage for the rated compressor output. The following formula can be used for this determination:

V = Cr x ( Ci / Co )

V = Air Receiver Volume (cu. Ft)
Cr = Compressor rating (cfm free air)
Ci = Compressor Inlet Free Air (psia)
Co = Compressor Outlet Pressure (psia)

Conversions:
Cubic Feet to Gallons: Multiply by 7.48
PSIG to PSIA: Add 14.7

After calculating the air receiver capacity, inlet and outlet connections should be selected based on the size of the compressor outlet connection. Safety valves should be sized equal to or greater than the compressor capacity in cubic feet of free air.

Tank Sizing Guide:

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