Thread Number: 71912  /  Tag: Vintage Automatic Washers
Plastic Tee fitting on A500 drain hose
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Post# 951363   8/2/2017 at 23:05 (349 days old) by robbinsandmyers (Hamden CT)        

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I saved the tee fitting off the 1966 A500 and wondered what it was for? It seems to have a check valve in it that lets air in but no water out when draining. Does anyone know its purpose? Thanks.

Post# 951371 , Reply# 1   8/3/2017 at 01:22 (349 days old) by askolover (South of Nash Vegas, TN)        

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sounds like the siphon break

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Post# 951396 , Reply# 2   8/3/2017 at 06:54 (349 days old) by Ultramatic (New York City)        

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Wow. I remember those. My dad's store had boxes of them in black or white. I used to play with them as building blocks.

Post# 951507 , Reply# 3   8/3/2017 at 22:34 (348 days old) by robbinsandmyers (Hamden CT)        

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Askolover thats it! What is its purpose?? Is it worth saving or should I toss it? The machine was hooked up to a stand pipe that was very high in the basement.

Post# 951538 , Reply# 4   8/4/2017 at 06:21 (348 days old) by Bigterkc (Kansas City)        
Anti siphon valves

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They prevent the sewer water from flowing back into your washer in the event of a stoppage somewhere down the line from your washer.

Post# 951598 , Reply# 5   8/4/2017 at 15:09 (347 days old) by brucelucenta ()        

They also keep the washer from siphoning down the drain when the standpipe is low and it is on the permanent press cycle and starts to refill.

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