Solvent Tank Condenser, Drop-In Tube in Shell Kit, 6" Tri Clamp

It adds 1,100 sq in of cooling surface at the top of the vessel, where the vapor is warmest. That cuts recovery time on a passive system, and because the cooling happens inside the tank rather than through a jacket wall, it cuts liquid CO2 use as well. On some setups we have seen LCO2 use halved.

What $15,000 buys

• The condenser element, 5.25 in outside diameter and 13 in overall, which drops through the 6 in tri clamp on the tank
• New solvent tank cap, built for this kit
• New liquid CO2 plumbing
• Dip tube and thermocouple, length cut to your tank
• Three cryogenic relief valves: 250 psi (17.2 bar) on the solvent side, 100 psi (6.9 bar) and 22 psi (1.5 bar) on the chilling circuit
• Needle valve, ball valves and pressure gauge
• Certificate of Conformance certification, ECR-220034-R0
• Installation by N.B. Oler

What it does to your recovery time

1,100 sq in of cooling surface, and it sits at the top of the tank where the vapor is warmest. That is the whole idea. A jacket chills the tank wall, and as the tank fills, more and more of that wall is behind liquid rather than vapor. The condenser is in the vapor space for the entire run.

• Faster recovery and less chilling time on a passive hydrocarbon system. On a passive machine the condenser is what sets recovery time, so this is usually the cheapest hour you can buy back.
• Liquid CO2 use drops, because the cooling is happening inside the vessel instead of through a wall. Depending on your setup and your process, we have seen LCO2 use cut in half.
• It also speeds solvent distillation back into the tank when you are not recovering.
• Cooled by liquid CO2 or an industrial chiller, your choice. Four 1/2 in NPT ports, so the circuit can be arranged to suit the rack you already have.

The surface area is worked out from our own tube count and tube length, not taken off a catalog. The method is in Stainless Steel Tube in Shell Condensers.

How it sits in the tank

• Goes in through the 6 in tri clamp opening. The element is 5.25 in outside diameter and 13 in overall
• Adds 6 in to the overall height of the tank, and inserts about 6-1/2 in down inside it
• Pass-through orifices, so your thermocouple and dip tube still reach the bottom of the tank with the condenser installed. That is the detail most drop-in designs get wrong
• The penetration geometry is cut to mate with the standard N.B. Oler solvent tank cap, so a custom cap drops straight on

Pressures and temperatures, from ECR-220034-R0

Your gaskets set the temperature range, not the condenser.

Those figures are the engineer of record's, other than the -40 F (-40 C) low end, which 3P Certz confirmed in September 2026. The report number goes on the quote so your inspector can pull it. Body is 304L stainless, condensing tubes are 3/8 in x 0.035 in wall. Approved solvents are butane and propane, including straight propane.

Fitment

• Fits a 100 lb solvent tank with a 6 in tri clamp opening, including our 100 lb ASME solvent tank
• Not universal. If your tank has no 6 in tri clamp port, this kit does not go in it. Send us a photo of the tank top before you order
• Coolant: liquid CO2 or a chilled circuit. Target is -60 C (-76 F) at minimum, -70 C (-94 F) preferred
• If you want a condenser that plumbs inline in the rack instead of into the tank, that is the Tube in Shell Condenser, $8,625 to $13,750

Lead time and shipping

• About 16 weeks to build
• 45 lb, so it ships parcel rather than freight
• Installation is included, so we schedule a visit rather than leaving you with a crate