Tornado Recovery Tank Internal Pipe Assembly 31050

Inside the recovery tank, this pipe assembly is what carries the returning airstream and dirty solution from the tank inlet down to the bottom of the tank. Getting the discharge low matters: dumping recovered water into open air at the top of the tank throws spray straight at the vacuum intake. Part number 31050 is the genuine OEM internal pipe assembly for the MWH-800, Marathon 800 and Marathon 1200 machines.

Compatible Models for the Recovery Tank Internal Pipe Assembly

This part fits the following Tornado machines:

• Tornado 98164 MWH-800 8-Gallon Self-Contained Carpet Extractor
• Tornado 98166 20″ Marathon 800 Carpet Extractor (8 Gallon, 115V)
• Tornado 98167 20″ Marathon 800 Carpet Extractor (8 Gallon, 230V)
• Tornado 98168 12 Gallon Self Contained Carpet Extractor
• Tornado 98168 20″ Marathon 1200 Carpet Extractor (12 Gallon, 115V) — all series
• Tornado 98169 20″ Marathon 1200 Carpet Extractor (12 Gallon, 115V)

The symptom of a failed internal pipe is water where water should not be. If the assembly has cracked, separated at a joint, or worked loose at the tank fitting, recovered solution sprays inside the tank instead of being delivered to the bottom. That mist reaches the filter and then the vacuum motor, and the first sign is usually a filter that is soaked rather than dusty, followed not long after by a motor that has ingested water.

The second symptom is foaming. A pipe discharging above the waterline agitates the recovered solution continuously, and detergent-laden water whipped with air produces foam that fills the tank far faster than the liquid does. If your machine foams out long before the tank is full, look inside before you reach for defoamer.

Inspect it with the tank empty and a torch. Look at the joints rather than the middle of the runs: plastic pipework fails where it is bonded or clamped, not along the straight. Check that the assembly is still seated in its fitting at the tank wall and that the lower end has not been knocked off its position by a tank being emptied roughly. Flex it gently and look for a hairline opening up at a joint.

Scale is the slower problem. Hard water and detergent leave a deposit inside the pipe that narrows it over a season or two, and a narrowed pipe backs recovered water up into the tank inlet. Flushing the recovery side with clean water at the end of each day keeps that at bay; a machine that has been put away dirty for years may have a bore you can no longer clear.

When you fit the replacement, check the tank fitting and its gasket at the same time. The assembly seals against that fitting, and a perished gasket there produces exactly the same spray problem as a cracked pipe. Seat the new assembly fully, make sure the lower end sits where the old one did, and refill with clean water on the bench to confirm the discharge is going where it should before the machine goes back to work.

Browse every assembly for this machine on the Tornado 98168 Marathon 1200 parts hub, and see the manufacturer’s range at tornadovac.com.

Frequently Asked Questions

What Tornado machines does the internal pipe assembly 31050 fit?

It is used on the Tornado 98164 MWH-800 8-gallon self-contained extractor, the 98166 and 98167 20″ Marathon 800, the 98168 12 Gallon Self Contained extractor, the 98168 20″ Marathon 1200 in all series and the 98169 20″ Marathon 1200. Call 763-535-0770 with your model number if you are not sure.

How do I know the internal pipe has failed?

A soaked rather than dusty intake filter is the usual first sign, because a cracked or unseated pipe sprays recovered solution inside the tank instead of delivering it to the bottom. Heavy foaming long before the tank is full points the same way. Inspect the joints with the tank empty and a torch rather than looking along the straight runs.

Why does my machine foam so quickly?

Often because the internal pipe is discharging above the waterline and continuously agitating detergent-laden water. That produces foam far faster than the tank fills. Check the pipe before reaching for defoamer — if it has come adrift at a joint or at the tank fitting, no amount of defoamer will fix the cause.

How do I order the Recovery Tank Internal Pipe Assembly (part# 31050) or get help?

You can add the Recovery Tank Internal Pipe Assembly (part# 31050) directly to your cart on this page, or call us at 763-535-0770. Our staff at 5415 West Broadway, Crystal, MN 55428 has been servicing Tornado equipment since 1956 and can help confirm the right part for your machine.

Questions? Call us at 763-535-0770 or visit us at 5415 West Broadway, Crystal, MN 55428.