Are Check Valves Still Needed With Demco Vacuum Connection Tee Fitting

Expert Reply:

Yes, you will still need to install the check valves with the Demco Air Force One Supplemental Braking System # SM99243 or # DM26VR, even if you use the Demco Vacuum Connection Tee Fitting # DM6257.

It will still require you to install the check valves, this fitting should make it easier for the install. I have added a link below to a video review for you to check out as well.

expert reply by: Kyle S

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