Flap Pump Parts

[Drew Shelley]

Looking for HE626 Flap Pump for parts.  Specifically the spring HE-1518.  
 

Any ideas?   Thank you!

Drew Shelley 

N75DF

[Shadrach]

I have a pump on the shelf, but I cannot break it into parts.  I am sure you can source a spring of similar size and spring rate. The HE1518 is not so critical in terms of precise spring rate because that valve is manually operated by a cam and needle. The spring simply holds the valve (ball) against the seat. Err on the side of more compression than less.  If you had lost an HE1516 you would need to be much more precise in sourcing the correct rate spring as it must be heavy enough to hold the ball against the seat but light enough to be unseated by atmospheric pressure when a vacuum is created on one side.

I can provide spring dimensions and pictures if that helps.

[Drew Shelley]

This is helpful!!

could you send dimensions and pictures as you mentioned?  
 

ours is a bit mangled.  Thank you!

Drew

[Shadrach]

1 minute ago, Drew Shelley said:

This is helpful!!

could you send dimensions and pictures as you mentioned?  
 

ours is a bit mangled.  Thank you!

Drew

The spring was damaged? How?

[Drew Shelley]

1 hour ago, Shadrach said:

The spring was damaged? How?

Had adjustment screw too loose when bleeding.  Ball came off seat and wound up jammed into the spring.  When we tightened it back up (without realizing all that), it mangled everything. 

[Shadrach]

4 minutes ago, Drew Shelley said:

Had adjustment screw too loose when bleeding.  Ball came off seat and wound up jammed into the spring.  When we tightened it back up (without realizing all that), it mangled everything. 

That should not be possible. It reads  like someone installed the wrong spring or perhaps the wrong ball. 
 
Spring should engage the ball before it engages the threads.

I made the below video several years ago to illustrate just what I’ve said above. You can see that the Springs as engage the ball before the retraction screw is threaded.
 

 

[Shadrach]

My old machinist calipers aren’t the best but these are the numbers I came up with.

spring length is .575

spring width is .220

ball diameter is .219

 

 

[Drew Shelley]

13 minutes ago, Shadrach said:

My old machinist calipers aren’t the best but these are the numbers I came up with.

spring length is .575

spring width is .220

ball diameter is .219

 

 

Thank you for these numbers!   We are still working on it. 

[Shadrach]

52 minutes ago, Drew Shelley said:

Thank you for these numbers!   We are still working on it.