NuPresto 400
NuBlu Energy's flagship 2-stage CNG compressor package. The same proven design that built the NuPresto 350 reputation, now standardized and refined for the next generation of CNG mother stations, RNG injection and virtual pipeline filling.
Overview
The NuPresto 400 takes natural gas from pipeline pressure up to CNG fill pressure in a single compact, fully packaged skid. It pairs the heavy-duty Fornovo Gas DA300 frame with NuBlu's field-driven controls, cooling and instrumentation engineering to deliver a compressor that runs day and night with predictable maintenance and minimal operator attention.
Standard configuration is two stages, with 3-stage and 4-stage variants for lower suction pressures. Every unit is assembled, wired and factory-acceptance tested at our facility in Center, Texas before it ships.
Key specifications
| Compression stages | 2-stage standard (3 and 4 stages available) |
|---|---|
| Compressor frame | Fornovo Gas DA300 heavy-duty reciprocating |
| Cylinders | 3 cylinders, non-lubricated, water-cooled, with HP valves |
| Suction pressure | 550 to 900 psig |
| Discharge pressure | Up to 4,200 psig |
| Max flow rate | Up to 3.64 MMSCFD |
| Driver | 400 HP electric motor, 1,200 rpm, direct coupled (TEFC, Class I Div 2 available) |
| Discharge treatment | Discharge filter coalescer |
| Cooling | Water-cooled cylinders with closed-loop glycol package |
| Control system | PLC-based with HMI, remote monitoring via Ewon |
| Lube oil | Chevron Cetus PAO 68 or approved equivalent, shaft-driven lube oil pump |
| Design standards | ASME B31.3, NEC, NFPA, API and ISO design philosophy |
| Skid | Single skid, fully assembled and FAT-tested in Center, TX |
Final flow, pressure and power are tuned to your gas analysis, suction conditions and site requirements. Contact engineering for a sized proposal.
NuPresto 400 family at a glance
| Variant | Suction | Flow | Best fit |
|---|---|---|---|
| 2-Stage | 550 to 900 psig | Up to 3.64 MMSCFD | High-pressure pipeline mother stations and trailer filling |
| 3-Stage | 150 to 600 psig | Up to 2.6 MMSCFD | RNG and low to mid-pressure pipeline service |
| 4-Stage | 40 to 100 psig | Up to 1.1 MMSCFD | Declining wells, low-pressure RNG and stranded gas |
Why NuPresto 400
Heavy-duty reciprocating frame
Fornovo Gas DA300 frame with crosshead-equipped, three-cylinder construction. A platform with thousands of installed units globally and the structural reserve to handle continuous duty in CNG service.
Non-lubricated, water-cooled cylinders
Non-lube cylinders mean no oil carryover into the gas stream, cleaner downstream equipment and lower environmental risk. Water-cooled jackets keep cylinder temperatures stable, extending valve and ring life.
Predictable maintenance windows
Engineered around 4,000 to 8,000 hour service intervals on wear parts. Operators know when the next valve, ring and packing service is due, and we stock the spares in Texas to support it.
Real controls, not an afterthought
PLC-based control system with HMI, remote monitoring via Ewon and a control philosophy refined across multiple field deployments. Cause-and-effect logic is documented and tested before the unit leaves the shop.
Built and tested in Texas
Final assembly, FAT, loop checks and HMI commissioning happen at our Center, TX facility. Issues get caught in the shop, not on your site.
Same proven design, now standardized
The NuPresto 400 is the standardized evolution of the NuPresto 350. Same compressor frame, same control philosophy, refined BOM and tightened lead times.
Typical applications
- CNG mother stations and fast-fill fueling sites
- RNG-to-CNG compression for pipeline injection or trucking
- Virtual pipeline trailer filling (pairs natively with NuBlu VPT-64 and VPT-128 trailers)
- Wellhead and gathering boost compression
- Mine, mill and remote power CNG fuel supply
- Peak shaving and standby gas service
What's included
- Single skid with compressor, motor, cooler and process piping
- PLC, HMI and field instrumentation, wired and tested
- Inlet filtration, pulsation control and discharge coalescer
- Closed-loop cooling system with glycol package
- Cause-and-effect, control narrative and FAT package
- Installation, commissioning and start-up procedure
- Recommended spare parts list and pricing
Engineering and aftermarket support
Every NuPresto 400 ships with documentation engineered to the same standard as the equipment itself: P&IDs, GA drawings, electrical load lists and a full O&M package. Critical spares, including complete cylinders, are stocked at our Texas facility for fast response.
Field service, troubleshooting and remote diagnostics are handled by the same team that designed and built the unit.