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Replaces the check valve that came with your Demco SBS Air Force One (SM99202 or SM99243) or Stay-IN-Play Duo supplemental braking system (SM99251).
Features:
Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.
Hello, everybody. This is Jeff at etrailer.com. Today, we're gonna take a look at this replacement vacuum check valve for the Demco SBS Supplemental Braking Systems. This is for a quantity of one valve. Now, this part here replaces a vacuum check valve that came on your Demco SBS Supplemental Braking Systems. This is designed to work with the Air Force One system, part number SM99202 or part number SM99243, and also works on the Stay-IN-Play DUO, which is SM99251.
All three of those systems we do sell separately our website. Now, those systems use two check valves in the vacuum lines. One check valve will install between your brake booster and the tow car's engine, and the other one installs between the operating unit and the vacuum line. Now, these are required on all tow cars that don't have a diesel engine, and this part includes one replacement check valve. But that should do it for the review on the replacement vacuum check valve for the Demco SBS Supplemental Braking Systems.
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Average Customer Rating: 4.8 out of 5 stars (45 Customer Reviews)
Replaces the check valve that came with your Demco SBS Air Force One (SM99202 or SM99243) or Stay-IN-Play Duo supplemental braking system (SM99251).Unfortunately, I heard about the issue with the Air Force One brake systems check valves thru a forum. I had the tale tell sponginess in my brakes while driving. I ordered two of these to replace the ones provided by SMI. Of the two check valves...the one that is between the AF1 controller and the brake booster was shot...you could see light thru it. I replaced it with this new check valve and it made a huge difference. I only wish Demco/SMI would have sent notice to their customers to notify them of this.
The check valve does look more robust...however, while twisting a hose, I found the two halves do come apart rather easily. So, it might be worth your while to wrap some tape around the joint between the black and white halves...to prevent it from coming apart... never know when a technician will grab a hose to look at something else...and not notice the check valve separated.
I had read that this was an improved check valve for the air force one braking system. It is larger than the old one and appears more robust. I installed it and it is working like it should.
These are the latest design check valves from Demco, a direct replacement of the prior units. My valves were 5 years old, no issues, but I replaced them out of an abundance of caution, to avoid any issues down the road. Order was filled and shipped promptly, great service.
I ordered two one way check valves for an aux brake system. It was a good thing they arrived undamaged. They were not packaged individually and thrown into bag that could have been easily crushed with minimal weight. I am not happy about the length of time it took to receive the merchandise and how it was packed!
Fine replacement. Glad you had it and was well made.
Arrived super fast. E-trailer is the b est
Needed a check valve to install a braking device on Jeep when towing behind a Class C. Finding the part on the website was a bit challenging but, they had it. Ordering was simple and straightforward.
Worked perfectly in my application.
James
5/7/2022
Still working flawlessly
Exactly what I needed. Bought a used Invisi-Brake and needed a 3/8 check valve for the master cylinder. This part is perfect. Fast shipping and a great price!!
Ordered this to have on hand in case it is needed. We had one go out on us & the manufacture replaced it under warranty. it is an easy fix if you have the part.
Worked perfectly in my application
replaced a bad check valve after five y ears.
Check valve was delivered promptly and fixed the problem I had with the old one.
Came quickly and well priced
Patrick C.
4/10/2020
Perfect
etrailer does a very good job for us in all areas
First class service and very pleasant staff. I was advised of how things were progressing throughout the process right up to and including final delivery. Thank you very much.
The part came quickly and was the correct part. I am very pleased with etrailer and will use them again.
Very prompt service and exactly what we needed.
This product is exactly what I was looking for . Works as advertised. Prompt shipment
Fast, as ordered, pleasure to do business with.
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Tim
6/9/2023
Working great!!!