{"id":569,"date":"2026-07-29T08:35:05","date_gmt":"2026-07-29T08:35:05","guid":{"rendered":"https:\/\/boostercompressorforoxygen.com\/how-to-write-a-compressor-enquiry-the-process-data-your-supplier-needs-before-they-can-quote\/"},"modified":"2026-07-29T09:27:53","modified_gmt":"2026-07-29T09:27:53","slug":"how-to-write-a-compressor-enquiry-the-process-data-your-supplier-needs-before-they-can-quote","status":"publish","type":"post","link":"https:\/\/boostercompressorforoxygen.com\/ur\/how-to-write-a-compressor-enquiry-the-process-data-your-supplier-needs-before-they-can-quote\/","title":{"rendered":"How to Write a Compressor Enquiry: The Process Data Your Supplier Needs Before They Can Quote"},"content":{"rendered":"

Why Vague Enquiries Produce Useless Quotations<\/h2>\n

We receive several types of compressor enquiries. The ones that result in fast, accurate technical recommendations and competitive commercial proposals share one characteristic: they contain specific process data. The ones that produce delays, clarification questions, and ultimately a quotation the buyer cannot use tend to follow a pattern: “Please quote for an oxygen compressor, we need it to compress oxygen to 150 bar.”<\/p>\n

That enquiry contains two facts \u2014 the gas (oxygen) and the outlet pressure (150 bar). It is missing everything else: inlet pressure, flow rate, gas purity, duty cycle, cooling configuration, power supply, applicable standards, and installation environment. Without this data, we can produce a rough order-of-magnitude price range, but we cannot specify a machine, cannot confirm the motor power, cannot confirm the cooling water requirement, and cannot commit to a delivery schedule.<\/p>\n

This article is a practical guide to writing a compressor enquiry that gets you a useful answer the first time.<\/p>\n

\"Compressor
Every enquiry we receive is reviewed by a compressor engineer against the provided process data. Accurate data produces accurate specifications.<\/figcaption><\/figure>\n

The Eight Essential Data Points<\/h2>\n

These are the minimum data points required to specify any gas compressor. Missing any one of them either prevents accurate specification or forces us to make an assumption that may be wrong \u2014 and a wrong assumption in compressor specification produces a machine that does not perform as required.<\/p>\n

1. Gas Type and Composition<\/h3>\n

State the gas clearly: oxygen, nitrogen, hydrogen, or a mixture. For oxygen: specify whether it is medical grade or industrial grade, and confirm the expected purity range (e.g., 93 \u00b1 3% from PSA, or 99.5% from LOX vaporiser). For nitrogen: confirm the purity and whether it is from PSA, liquid nitrogen, or pipeline. For hydrogen: confirm the purity, the source, and whether any special materials are required.<\/p>\n

If trace impurities are present \u2014 moisture, CO\u2082, hydrocarbon vapours from the gas generation process \u2014 list them. Some impurities affect material selection or require additional inlet treatment.<\/p>\n

For operations that also compress CO\u2082 as a separate gas stream, the specification process follows the same logic \u2014 see our CO\u2082 compressor<\/a> resources for application-specific guidance.<\/p>\n

2. Inlet Pressure<\/h3>\n

State the minimum, normal and maximum inlet pressure. These are different values and all three matter:<\/p>\n