Thread Number: 12072
Royal 931 Deluxe Tank
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Post# 129252   3/27/2011 at 19:15 (4,714 days old) by KirbyClassicIII (Milwaukie, Oregon)        

kirbyclassiciii's profile picture

Does anyone here know all about the various Royal Deluxe Tanks through the years, such as the 901 and 931 and the Electro-Hygiene versions that are models 950 and 966?

The first power nozzle for a Royal canister/tank was the model 497, which according to Jeff Schroff, Sr., was introduced around September 1974 (look for the serial # to start with "47J"). Pre-9/74 models (serial # starts with "47H" or earlier) could also be upgraded to allow the power nozzle usage by changing the part of the motor assembly to one that allows this provision. He may be wrong, but he also tells me that the PN may have been an Electro-Hygiene exclusive feature at first (along with the deodorant chamber used on the 966, EH's version of the 901/931).

Getting back to the model series at hand, I believe the last 931s were sold around December of 1984, the power nozzle in production at that time being model 597. Correct?


Post# 129343 , Reply# 1   3/27/2011 at 23:10 (4,714 days old) by HooverCelebrity (Germany)        

Not sure, Royal isn't a brand I know a lot about.. Sorry I can't be of any help...

Post# 129402 , Reply# 2   3/28/2011 at 08:57 (4,713 days old) by kenkart ()        
I have!

The Electro Hygiene version, it was made in 1968, from the date on the motor1

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