By Pass 7129871 ( very old PN 42-3437 ) used on the standard valve common for most Sears, North Star, GE, and Ecowater systems.
GE part # WS15X10012
Morton part # 7370286
Comes with 2 o-rings ( 7170288 ) but Not Clips (7116713), sold separately.
Plastic "body" of the by pass has part number 625.34372. And that number is molded into the plastic.
Replacements have large handle at one end, as shown in our alternate photo.
This is how they are made now ( since 2012 ).
The center to center spacing for the threaded connector is approx 2 1/4"
And the center to center spacing for the mountings that go into the water softener itself is about 3 3/8 of an inch.
Connection to plumbing is 1" threaded. You can use the metal adapters nuts with copper tubes, or connect directly to the male threads using any 1" female piping connections sold at plumbing supply / hardware stores.
* NOTE: Can be used in place of ( if re-plumbing your pipes ), similar By Pass 7278434 ( WS15X10053 ) that requires separate "adapters" for the plumbing connections.
For FAST Delivery, Select Priority Mail shipping during Check Out.
Arrives in 2 business days to most locations.
Standard shipping arrives 2 - 4 days ( in USA ) from date you place order.