Does the Polaris back-up valve open?

[crandies]

I have seen pictures of this valve taken apart and apparently there are o-ring replacements. However, I cannot unscrew the valve. Does anybody know which end is up so that I can use the righty tighty, lefty lucy method?
Thanks.

[JimK]

I have seen pictures of this valve taken apart and apparently there are o-ring replacements. However, I cannot unscrew the valve. Does anybody know which end is up so that I can use the righty tighty, lefty lucy method?
Thanks.

Good question. I've not tried to open mine. I'm interested in the answer to this as well.