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Smallaire riser pipe


2.5 inch. If you need taller pipes to improve gravity flow thru the secondaries, or just looking to replace rusted-out pipes or older pipes that lack dimples to redistribute seed & fertilizer more uniformly as it goes up into distribution head. Other sizes available.

SKU: SMA.Riser63BLK Category:

Smallaire Heat Exchanger

  • Dries air going through product delivery system
  • Prevents gunk buildup (fertilizer dust, seed treatments)
  • Cools hydraulic oil substantially
  • Robust design

Call to order 785-820-8000

Smallaire riser pipes & conversion heads

  • Enlarged elbow to properly disperse product
  • Tremendous durability
  • Uniform product going to each opener

Prevent hydraulic oil from overheating caused by your air drill. Even if it’s not overheating to the extent that it’s shutting down your tractor, high temperatures break down hydraulic oil faster, and shorten the life of pumps and seals. You really want it to stay below 180 F, and preferably cooler yet.

There are plenty of farmer-built hydraulic oil coolers out there (in Australia, everyone runs them). But you can go one step further: instead of venting that heat into the atmosphere, you can use it to warm and dry the air going through the air delivery system. This has the advantage of reducing moisture in the lines, and helping to eliminate gunk buildup from fertilizer dust and seed treatments.

For a robust “heat exchanger” that’s designed specifically for this, check out our Smallaire unit. The universal, remote-mount version fits nearly any air cart (radiator attaches to frame using u-bolts, etc.—this is do-it-yourself engineering, often quite simple, except for the JD 1910 carts where we have a special bracket/stand that is ready to go—see info below). Note that nearly all Australian air cart manufacturers (there are dozens) use remote-mount radiators rather than fan-mount, which results in less stress on the fan housing while allowing larger, heavier-duty radiators to be used—ours is 24 x 28″, and extra thick—nearly twice as big as some units on the market. Remote-mount radiators use flexible ducting to mount the unit higher up than the fan intake, to draw cleaner air (cuts down on dust and chaff clogging the heat radiator).

We don’t keep many, and it takes about four weeks to get them in from Australia, so plan accordingly. Don’t get sidelined in the heat, or with gunk accumulation in your air delivery system (especially secondary diffusers and distribution heads, dusty fertilizers, or high humidity).

Get the Kit

We’re pleased to announce that we now have a kit to make installing our Smallaire heat exchanger much easier and more streamlined on JD 1910 carts, both tow-behind and tow-between. Note: flexible ducting not installed in photos.

Heat Exchanger Stand

The kit includes a rugged stand (bracket) that bolts onto the cart frame in a way that positions the radiator high up to draw clean air (away from dust and chaff swirling around down closer to the ground behind the drill and cart tires), as well as providing easy access to the radiator from the cart’s catwalk. The kit also includes 3/4″ hydraulic hoses, fittings, and the flexible ducting and other parts to connect the radiator to the fan intake.


Download Installation Instructions

Exapta’s bracket for Smallaire heat-exchanger on JD 1910 carts


“All in all, the Heat Exchanger did its job. It was noticeably warmer, drier air running through the system. Last year, some farmers had to stop seeding at times in the hot conditions due to hydraulic oil overheating, whereas I was able to keep going, even with an older tractor.

Greg Morrical, Beverly, KS (Exapta customer since ’07) (Exapta Smallaire Heat Exchanger on JD 1910 air cart)

“I didn’t think the [Smallaire distribution] head was going to be anything special, but they ended all of our plugging problems and we backed the fan speed off another 200 RPM. Never had a secondary hose come off, either. We got the [Smallaire] stainless risers from you, and they’re an undervalued product. Great product, and I will buy again [for my other air drill]. Thanks!”

Jamie Kouba, Regent, ND (Smallaire manifolds & riser pipes on 60-ft SeedMaster air drill)
Weight 5 lbs
Dimensions 27 × 11 × 3 in

Chris Horton

Chris Horton brings 25 years of management with him. He grew up on his grandparents farm in Reno County Kansas where they mainly grew wheat and cattle feed. He worked on feed lots as a pen rider and cow-calf operations before moving to Southern California where Chris started a new career in the transportation and transport logistics, eventually managing the western region for a large commercial vehicle leasing company. Chris moved home to Kansas, to manage a local Farmers Coop and then eventually the service dept for a tractor dealership. The opportunity to join the Exapta team came up, and he knew he wanted to be a part of this team.

Michael Beasley

Finance Manager

Michael Beasley joined Exapta after serving in various financial roles over the course of his career, from Controller to Chief Operating Officer. He also spent many years in sales walking fields with growers and learning about their greatest challenges. Michael believes in the future of agriculture and the importance of no-till. He is a strong advocate for regenerative farming and soil health.

Jon Zeller

Current Product Engineer

Jonathan Zeller joined Exapta excited to return to working with no-till planting equipment. He supported research of no-till planting and other ag related projects for 7 years with Kansas State University’s Agricultural Engineering Department after getting his engineering degree. He later worked 3 years for Landoll Company, LLC. where he gained experience in a design engineering role. Jonathan grew up on a small family farm in NE Kansas working with row crops, hay and cattle. Jonathan enjoys solving engineering problems and improving or creating products to be robust and easy to install and service.