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Information for Compressor Valve Selection
Valve selection requires the compressor configuration, gas composition, operating range, and the problem to be addressed or project requirement. Provide the information available, and we will identify any additional data needed.
Equipment and Existing Installation
Start with the cylinder, valve position and installation dimensions.
- Compressor manufacturer, model, stage, cylinder, bore and stroke when available
- Suction and discharge valve positions, valve-pocket dimensions, installation and sealing interfaces
- Existing valve model, construction, materials, drawings, photographs and maintenance records
Gas, Duty and Failure History
Give the gas and each operating case. Describe what you saw separately from what you think caused it.
- Gas composition and variation, corrosiveness, moisture, particles, tar, polymers and liquid carryover
- Stage suction and discharge pressure, temperature, flow, speed, capacity control, start-up, shutdown and lubrication
- Failed part, time of occurrence, operating duration, maintenance or replacement records and the project requirement
Units and Conditions
Say whether pressure is absolute or gauge, and give the flow reference, units, stage and operating case. Mark which values are design, measured or estimated, and which come from abnormal operation. Include normal, start-up, shutdown and variable-load conditions.
- We check the gas against material compatibility, particle and liquid control, and lubrication
- We check lift, springs, cushioning, flow, opening and closing timing, impact and installation clearance against your machine
- If the project has standards, inspection or documentation requirements, give the standard name and edition.
What Happens Next
With this information we can shortlist valve types and tell you what else we need. The final configuration is fixed against the actual dimensions, materials, pressures, temperatures, speed, lubrication and installation, and agreed on the drawing.
Where to Start
Equipment details are covered in Solutions Step 01, gas and duty in Step 02. If a valve is already failing, use the Support page. Then compare the catalogue and cases.
Prepare a selection record that can be checked
Use the first enquiry to identify the equipment, duty and evidence for a valve review.
Separate the equipment record from the operating record
For equipment, identify the compressor manufacturer and model, stage or cylinder, suction or discharge valve position, current valve arrangement, valve-space and installation information. Include drawings or measurements where available, and state whether each value came from a drawing, nameplate or field measurement.
For operation, organize gas composition, pressure, temperature, flow, speed, capacity control, lubrication and separation conditions by stage and operating case. A nominal value is useful, but a range and abnormal or transient conditions often explain why more review is needed.
State the conditions clearly
Mark pressure as absolute or gauge. Give units and reference conditions for each flow figure. Keep normal, startup, shutdown and variable-load information separate. If a value is estimated, measured or taken from a design document, label it so that later review does not confuse different sources.
For mixed gas, provide the composition and how it changes. For contaminants, moisture, particles, deposits, oil or liquid carryover, record both what is present and the available control measures such as filtration or separation.
Document failures for diagnosis
If the request follows repeated replacement or a damaged valve, record which part was affected, where it was installed, when the symptom appeared, operating hours and the maintenance history. Add photos and repair records. Record observations and diagnosis separately; review the cause against the operating evidence.
This record supports a technical discussion of the gas, lubrication, contamination, installation and moving-element motion.
Provide project and document requirements
Where a project has a named standard, inspection requirement or document requirement, give the exact name and edition.
Confirm dimensions, materials, lift and springs in the applicable drawings and technical documentation.
Use the site resources in sequence
The solutions pages divide the work into equipment, operating conditions and configuration review. The product catalogue provides the structural vocabulary for candidate valve families. Case studies present machine, gas, stage and outcome records. Together, they help a buyer send a smaller, clearer first package and receive a focused request for anything missing.
If the valve is already failing, begin with the Support checklist. If this is a new selection or a replacement with available data, begin with the three-step workflow and the product pages.
Make the first package easy to review
Use a simple file list when sending several documents: identify the compressor or stage, the operating case and the source of each drawing, photograph or record. Keep file names descriptive.
Organize the first discussion around the relevant machine, operating case and evidence.
Check the handover before requesting a conclusion
Before sending the package, confirm that each pressure, temperature, flow and speed value can be tied to a stage and an operating case. Check that drawings, photographs and maintenance records describe the same valve position. If they come from different dates or operating conditions, label the difference rather than combining them into a single assumed condition.
A useful first request can state both the required decision and the remaining uncertainty: for example, whether the available evidence supports reviewing a valve family, whether an installation interface still needs measurement, or whether a reported symptom needs more operating history. This keeps the next technical question specific and evidence-led.