40 LB Passive Double Barrel Hydrocarbon Extractor, ASME Certified
ABOUT THIS PART
40 LB passive double barrel hydrocarbon extraction system, $350,000. Two complete 20 LB sides on one rack: four 6 in x 48 in chilled material columns, two 12 in ASME recovery vessels, two 100 lb ASME solvent tanks, two color remediation columns and two molecular sieves, tied together by a chilled recovery manifold.
The throughput comes from the layout. One pair of columns soaks while the other pair drains, so the recovery side is never idle waiting on a load. Recovery is fully passive, so there is no pump in the solvent path. Runs crude or live resin without reconfiguration.
The other advantage is redundancy. Every vessel on this machine is doubled, so one side keeps producing while the other is down for a gasket change or an inspection.
It runs straight propane. ECR-250902-R0 names propane by CAS number as an approved solvent in its own right, not only as a blend component, and propane's 110 psig at 70 F (21 C) sits inside the 250 psi (17.2 bar) design pressure. See Running Straight Propane.
THE MOST THOROUGHLY DOCUMENTED SYSTEM WE BUILD
This is the machine 3P Certz reviewed in full, as 3P Certz report ECR-250902-R0, Revision 0, issued 23 October 2025. Engineer of record Brian Kester, PE, reviewed by Craig Beaver.
- Every pressure vessel is analyzed individually, with its own summary and calculation pages, inside diameter, pressure envelope and U stamp determination.
- Every purchased component on the system is listed by manufacturer, part or model number, and qualified against pressure, temperature and wetted materials. That covers the relief valves, ball valves, needle valves, the compound gauge, the sight glasses, the quick connects, the tubing and the gaskets.
- The report states that components shall not be substituted outside the specifications in that list, which is why we do not swap parts on a certified build.
Every number on this page traces back to it.
BUILT, NOT RESOLD
- N.B. Oler holds the ASME U stamp. The solvent vessels, the color remediation columns and the recovery vessels are welded, hydro tested and U stamped in our own shop in Bend, Oregon.
- The material columns and molecular sieves are not U stamped and do not need to be. At 5.75 in and 5.72 in inside diameter they fall under the ASME BPVC Section VIII Division 1 exemption for vessels of 6 in inside diameter or less, U-1(2)(-i). They are built to the same shop standard.
- Solvent vessel design calculations are DCR-200101-R1. Recovery vessel design calculations are DCR-210020.
- All stainless is fabricated here. Gaskets, filter cartridges and filter socks are purchased parts and are not represented as ours.
EVERY VESSEL IS RATED FOR FULL VACUUM
That matters because you pull a vacuum on this machine every run, and a vessel rated only for internal pressure can collapse doing it. Every vessel is rated to -14.7 psi (-1.01 bar), full vacuum, and to 250 psi (17.2 bar) max design pressure. Inside diameters and U stamp status, from the report:
| Vessel | Inside diameter | ASME U stamp |
| Solvent vessel | 12.08 in | Required and fitted |
| Collection and recovery vessel | 12.38 in | Required and fitted |
| Color remediation column | 7.78 in | Required and fitted |
| Material column | 5.75 in | Exempt, inside diameter 6 in or less |
| Molecular sieve | 5.72 in | Exempt, inside diameter 6 in or less |
Gasket choice sets the cold limit on this machine, not the vessels. The vessels are good to -155 F (-104 C). The certified minimum solvent temperature is -30 F (-34 C) on standard elastomeric gaskets, and PTFE or rigid PTFE composite gaskets take it to -65 F (-54 C). If you plan to run cold, choose the gasket for it. See choosing a gasket material.
Common add-ons, priced separately: a secondary material column rack, a tube in shell condenser, extra 100 lb ASME solvent tanks and extra 12 in ASME recovery vessels. If you are choosing between sizes, the 20 LB system is the same engineering on one side, and the single barrel compact 40 LB gets the same throughput into a smaller footprint without the redundancy.
LEAD TIME, SHIPPING AND TERMS
- 26 weeks from paid order to shipment.
- Paid in full before the system ships. We do not offer net 30 or purchase order terms.
- Ships as one crate, 3,000 lb, 144 in long x 48 in wide x 90 in tall. Measure your dock and your doorway against that before delivery day.
- LTL freight, quoted and invoiced after the crate is measured, not charged at checkout.
- Your room has to be permitted for the solvent quantity you intend to store. Talk to us before you commit to a layout.
WHAT SHIPS WITH IT
Onsite training and commissioning are part of the delivery, not optional paperwork. Systems operated or modified by outside consultants without retraining are the ones that come back damaged.
In the crate: Hydrocarbon Operators Manual, What To Expect guide, onsite training and commissioning checklist, safety and process training with a certification exam and certificate, and an operators run log.
THE OPERATING ENVELOPE
Two of everything, and one pressure envelope. 250 psi (17.2 bar) is what lets this machine run straight propane.
Propane sits at 110 psig at 70 F (21 C) and 174 psig at 100 F (38 C). n-Butane at the same temperatures is 16.5 and 36.9 psig. A 150 psi machine does not have the room for the first column, whatever its brochure says about solvent compatibility. See running straight propane.
Every vessel also holds full vacuum, -14.7 psi (-1.01 bar). The jacket figures are separate envelopes and lower on purpose: a column jacket is a 22 psi (1.5 bar) space, and putting liquid CO2 or chilled fluid into it at more than that is how jackets get destroyed.
The gasket sets the cold limit on this machine, not the steel.
The steel is good to -155 F (-104 C) and is never what stops you. Standard gaskets put the floor at -30 F (-34 C). PTFE or rigid PTFE composite gaskets take it to -65 F (-54 C), which is the number that matters if you are running cold propane or fresh frozen. See choosing a gasket material.
Every figure is transcribed from 3P Certz report ECR-250902-R0, Revision 0, issued 23 October 2025, engineer of record Brian Kester, PE. Approved solvents are named by CAS number in that report: n-Butane 106-97-8, Isobutane 75-28-5, Propane 74-98-6.
SPECIFICATIONS
▦ IN YOUR MANUAL
This part appears in the operator manual that ships with your system. The QR code there links to this page.
◈ REFERENCE FOR THIS PART
COMMON QUESTIONS
What is the design operating pressure?
250 psi (17.2 bar), per 3P Certz report ECR-250902-R0. Solvent tank jackets are 100 psi (6.9 bar) and the column jackets and liquid CO2 inlets are 22 psi (1.5 bar).
How much solvent and material does it hold?
200 lb of solvent across two 100 lb ASME tanks, and 40 lb of plant material per run, which is 18,000 g dry or about 72 lb of live resin.
How cold can it run?
The certified minimum solvent temperature is -30 F (-34 C). Built with PTFE or rigid PTFE composite gaskets it may run as low as -65 F (-54 C). The gasket sets the limit, not the vessels, which are good to -155 F (-104 C).
Which solvents are approved?
n-Butane (CAS 106-97-8), Isobutane (CAS 75-28-5) and Propane (CAS 74-98-6).
Are all the vessels ASME stamped?
The solvent vessels, color remediation columns and recovery vessels are U stamped. The material columns and molecular sieves are exempt because their inside diameters are 5.75 in and 5.72 in, under the 6 in ASME exemption, so they carry no stamp and do not need one.
Can it hold a vacuum?
Yes. Every vessel on the system is rated to -14.7 psi (-1.01 bar), full vacuum, which is in the pressure table of the certification report.
Is the CRC column included?
Yes, two of them, one per side, and they are certified as part of this system rather than bolted on as an option. Your build sheet governs.
What documentation comes with it?
3P Certz report ECR-250902-R0, signed by Brian Kester, PE. It analyzes every pressure vessel individually and qualifies every purchased component by manufacturer, part number, pressure, temperature and wetted materials.
Can I substitute parts?
Not on a certified build. The report states components shall not be substituted outside the specifications in its purchased components list.
How is it different from two 20 LB systems?
It is two 20 LB sides on one rack sharing a chilled recovery manifold, so one pair of columns soaks while the other drains. Every vessel is doubled, so one side keeps producing while the other is down.
How is it different from the single barrel 40 LB?
Same 40 lb per run. The single barrel puts four columns onto one large recovery vessel and one large solvent tank in a 52 in x 64 in footprint with no redundancy, and it costs more.
What does installation require?
An electrically classified C1D1 area, 24 to 48 kW of hot water, and a room permitted for the solvent quantity you intend to store.
What is the lead time?
26 weeks from paid order to shipment.
Do you offer net 30 or purchase order terms?
No. Systems are paid in full before they ship.