RIX 4VX SERIES 40HP Helium compressor 60 scfm 50 psi to 3300 psi -( 2 out of 2)
UsedSpecifications
Description
RIX 4VX SERIES 40HP Helium compressor 60 scfm 50 psi to 3300 psi -( 2 out of 2)
RIX Industries 4VX4BG-17.5 four-stage oil-free helium compressor, 40 HP, rated 50 psi inlet to 3300 psi discharge at 60 SCFM. Control panel shows 9,500 hours. This is the second of two identical units available, and it is missing the second and third compression stages (cylinders, heads, and valves), making it suitable as a parts unit or for rebuild.
This is 2nd of the 2 identical units we have. The price if for this unit described and shown in this listing.
There are 2 compression stages are missing - 2nd and 3rd stages ( please see pictures).
Also please be advised that we have identical unit with no parts missing so this one could be great addition or "PARTS" unit if needed. ( Will make a deal on 2 units)
This unit is designed for efficient and reliable operation around the clock, even for the most demanding of applications.
Technical Specifications
FEATURES: Modular Design - Flexible cylinder configurations for up to 4 stages of oil-free compression to meet a wide range of applications• Air-cooled heat exchangers, compression cylinders, and crankcase - Compact/light weight package that is easy to transport and service for years to come• Pressure lubricated crankcase - Durability and simplicity (uses standard automotive engine oil)• Rated for 100% Continuous Duty
RIX 4VX SERIES UNITS PERFORMANCE SPECIFICATIONS:
PRESSURE RANGE: 50-5000 PSIG
TYPICAL FLOW CAPACITY: 30-200 SCFM
POWER: Up to 50 HP
GAS TYPE: Ar, He, H2, O2, N2, CNG & other gas compositions
THIS COMPRESSOR SPECIFICATIONS
PRESSURE RANGE: Inlet 50 psi - outlet 3300 psi
FLOW CAPACITY: 60 SCFM
POWER: 40 HP
GAS TYPE: He
Cylinder 0.5-5.5"D
Stroke 4"
Speed Range: 250-750 RPM
NORMAL OPERATING PRESSURE RANGE
Suction 50PSIG
1st Stage 140 PSIG
2nd Stage 400 PSIG
3rd Stage 1300 PSIG
4th Stage 3300 PSIG
BPR Setting 500 PSI (Approximate)
RELIEF VALVE SETTINGS
Stage Symbol Set Point
Suction 75 PSIG
1st Stage RV1 250 PSIG
2nd Stage RV2 600 PSIG
3rd Stage RV3 1500 PSIG
4th Stage RV4 3500 PSIG
OPERATING TEMPERATURES
Location Normal Range
1st Stage Discharge Gas 320 degrees Fahrenheit
1st Stage Discharge After Cooler 20 degrees above ambient
2nd Stage Discharge Gas 330 degrees Fahrenheit
2nd Stage Discharge After Cooler 20 degrees above ambient
3rd Stage Discharge Gas 340 degrees Fahrenheit
3rd Stage Discharge After Cooler 20 degrees above ambient
4th Stage Discharge Gas 320 degrees Fahrenheit
4th Stage Discharge After Cooler 20 degrees above ambient
The above operating temperatures are based on an ambient temperature of 100 degrees Fahrenheit.
SAFETY SWITCH SETTINGS
Switches Symbol Function Set Point
Oil Pressure PSO Shutdown 25 PSI falling
Discharge Gas Pressure PSR Stop 3300 PSI
Start 3000 PSI
Suction Gas Pressure Stop 35PSI Failing
Start
High Gas Temp, 3rd stage* Stop 450 Degrees Fahrenheit
High Gas Temp, 4th stage* Stop 390 Degrees Fahrenheit
High Vibration Shutdown Hammer blow
The compressor has 2 cylinders, 2 heads, 2 valves missing (Stage 2 and 3) Please see pictures. The motor turns with no problems.
Dimensions
Bare Unit Dimensions: 41”W x 54”L x 36”H¹
Weight: 750 lbs. (with flywheel)¹
Typical Pkg. Dimensions: 46”W x 88”L x 43”H¹
Inspection, shipping & payment
Terms set by Gas Equipment 4 Sale.
Price on Request
Have one like this? Sell it on Metal Mountain →
Seller
Gas Equipment 4 Sale
Waxahachie, TX, United States
Business and location confirmed by Metal Mountain.
Questions buyers ask
What capacity and discharge pressure does it actually deliver?
This unit is incomplete and cannot deliver rated capacity. It is missing the second and third compression stages (cylinders, heads, and valves), leaving only stages 1 and 4 installed. As configured, it is suitable as a parts donor or rebuild project, not for operation.
What drive, power and cooling does it require?
The compressor is driven by a 40 HP motor and uses air-cooled heat exchangers for interstage cooling and crankcase cooling. The crankcase is pressure-lubricated with standard automotive engine oil. Four-stage RIX compressors in this series typically run at 250-750 RPM through a belt or direct drive, though the specific motor voltage and phase are not stated in the listing.
What are the running hours and what has been rebuilt?
The control panel shows 9,500 hours. No rebuild history or component replacement information is provided in the listing. The seller notes the motor turns with no problems, but with two complete stages missing, a full inspection of remaining components and service records should be requested.
What should I inspect on a used compressor before buying?
On oil-free helium compressors, check piston ring and rider band wear, valve condition, and interstage pressure ratios during operation to assess remaining seal life. Verify crankcase oil pressure, listen for bearing noise, and check vibration levels at operating speed. Since this unit is missing stages 2 and 3, confirm the condition of the remaining first and fourth stage components, flywheel, crankshaft, and control panel before purchasing as parts or for rebuild.
General guidance for this type of equipment. Ask about this specific unit in your inquiry — the seller answers directly.