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Ring Valves
FW type fouling-resistant valve, HD type gas-cushioned valve, HK and HX types.
View Ring ValvesPRODUCTS
Reciprocating Compressor Valves
RONDER offers ten models across ring, mesh and poppet valve designs. Flow passages, valve elements, springs and cushioning differ by model; selection depends on the equipment and operating conditions.
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Mesh Valves
WD, WG, WJ and WP types.
View Mesh Valves03
Poppet Valves
JD and JG types.
View Poppet ValvesSelection Begins with Actual Service Conditions
- Compressor manufacturer, model and configuration
- Gas service or gas composition
- Pressure, temperature, operating speed and actual service information
Start with the duty, then compare valve families
Use the model designation to start the selection record. Valve requirements vary by stage, valve position and operating case, including within the same compressor.
Valve models and selection conditions
Scroll across for all selection details →
| Model / type | Speed (rpm) | Molecular weight Mw | Duty and selection focus | Construction and components |
|---|---|---|---|---|
| FW Ring | — | — | Contaminants and deposits; wide passages and larger lift | PEEK plates; 17-7PH springs; forged valve body |
| HD Ring | — | — | Relatively clean gas; smaller lift and opening-impact control | Multiple springs; gas cushion in the guard |
| HK Ring | — | < 8 | Light gases; lubricated or nonlubricated configurations | Wide passages and sealing surfaces; smaller lift |
| HX Ring | — | — | Contaminants, deposits and oil sticking | Valve rings |
| WD Mesh | < 1000 | > 5 | Lubricated or nonlubricated service; review deposits | Wide flow slots; larger lift |
| WG Mesh | < 1800 | — | Lubricated service; oil-film sticking | Outer-circumference springs; treated flow passages |
| WJ Mesh | < 1000 | — | Process compressors; lubricated or nonlubricated configurations | Metal plates; multiple slots; dual cushioning |
| WP Mesh | < 1000 | — | Installation space and clearance volume | Leaf springs; guard without spring pockets |
| JD Poppet | < 600 | — | Larger flow area; individual poppet maintenance | Individual poppets; spherical line-contact seal |
| JG Poppet | < 1500 | — | Lubricated or nonlubricated service; review poppet loading | Skirtless poppets; spherical line-contact seal |
Send each stage’s suction and discharge pressures and temperatures, speed, gas composition and drawings to determine valve differential pressure, materials, lift, springs and installation dimensions. Calculate mixture Mw from the actual composition.
What the valve has to do
A reciprocating compressor valve opens and closes from the pressure difference across it. Its seat, moving element, springs, guard and flow passages therefore have to be considered together. The buyer’s task is to describe the real duty, including normal operation and any startup, shutdown or variable-load condition that affects the valve.
The catalogue groups the current range by ring, mesh and poppet valve construction. These families organize an initial comparison. Final dimensions, materials, lift and spring arrangement use the actual machine and operating data.
How to use the family comparison
Use the table to decide which product pages are worth reviewing first. Ring-valve pages explain FW, HD, HK and HX structures. Mesh-valve pages cover WD, WG, WJ and WP. Poppet-valve pages describe JD and JG. The structural descriptions are more useful than a name match when a valve is being replaced or when an existing valve has failed.
- For contaminants, deposits, oil film or liquid carryover, document what is present and how it reaches the valve.
- For light gases, speed, lubrication or changing load, record the actual range rather than a single nominal number.
- For a replacement, compare the valve position, chamber, sealing and installation interface with the existing assembly.
Data that makes a technical discussion productive
Start with the compressor manufacturer and model, cylinder or stage, suction or discharge position, and available drawings or measurements. Then list gas composition and changes, suction and discharge pressure and temperature for each stage, speed, flow, capacity control, lubrication and any separation or filtration conditions.
If the request follows a failure, include photos of the failed parts, when the problem appeared, operating hours, maintenance history and changes in operation. Separate observed facts from suspected causes.
Move from comparison to a confirmed configuration
Use the product pages and case studies to organize the technical discussion. Once the equipment, gas and operating envelope are available, the selection workflow can identify missing information and review the valve type, moving elements, springs, cushioning and installation interface.
Confirm the final configuration in the applicable drawings and technical documentation.