Brake Booster Check Valve Help

[Zeppelin654]

Somehow there was a small hole in the check valve when I went to bleed the brakes on my 92 build. The booster grommet has a 3/4" opening. I need a check valve that has a 3/4" barb on it. I CANNOT find a check valve big enough. All I can find is 1/2" barb ones with "universal grommets" and the grommets wont work. If anyone has any help on this, I would really appreciate it. It's been almost a year long build, slow because of acquiring parts and finding time with work, and I don't want to not be able to drive it, because I can't bleed the brakes and have good working brakes. Thanks guys

 

[badbowtie]

Rockauto lists one

 

[Zeppelin654]

I looked there and cross referenced the part number because the raybestos part is out of stock, and it's the small one that has a 1/2" barb I think. A gentleman is sending me one that supposedly will work. I've got my fingers crossed !