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  1. Brake Actuator
  2. Demco
  3. Surge Brake Actuator
  4. Disc Brakes
  5. 2-5/16 Inch Ball Coupler
  6. 20000 lbs GTW
Demco Hydraulic Brake Actuator w/ Electric Lockout - Disc - Primed - 2-5/16" Ball - 20,000 lbs

Demco Hydraulic Brake Actuator w/ Electric Lockout - Disc - Primed - 2-5/16" Ball - 20,000 lbs

Item # DM8204702
Our Price: $530.69
Brake Actuator
Shipping Weight: 65 lbs
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Surge-type actuator features a rustproof aluminum master cylinder and a primed finish. eZ-Latch coupler mechanism makes hookup a snap. Electric lockout activates automatically to keep brakes from actuating when in reverse. Weld-on application. 1-800-940-8924 to order Demco brake actuator part number DM8204702 or order online at etrailer.com. Free expert support on all Demco products. Great prices and Fastest Shipping for Demco Hydraulic Brake Actuator w/ Electric Lockout - Disc - Primed - 2-5/16" Ball - 20,000 lbs. Brake Actuator reviews from real customers.
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Demco Brake Actuator - DM8204702

  • Surge Brake Actuator
  • Disc Brakes
  • 2-5/16 Inch Ball Coupler
  • 20000 lbs GTW
  • Weld-On
  • Electric Lockout
  • Straight Tongue Coupler
  • Demco

Surge-type actuator features a rustproof aluminum master cylinder and a primed finish. eZ-Latch coupler mechanism makes hookup a snap. Electric lockout activates automatically to keep brakes from actuating when in reverse. Weld-on application.


Features:

  • Hydraulic actuator activates trailer's brakes when tow vehicle slows or stops
  • Electric reverse lockout lets you back up without actuating trailer brakes
    • Solenoid activates automatically when you shift into reverse
  • eZ-Latch coupler mechanism for simple, secure hookup and disconnect
    • Lets you hook up when latch is in closed position - just drop coupler over hitch ball and latch will snap into place
  • Heavy-duty, aluminum master cylinder is durable, rustproof, and efficient
    • Built for high-pressure applications
    • Allows 50 percent greater displacement than standard master cylinders
  • Acetal copolymer lining provides smooth operation as actuator telescopes in and out
  • Breakaway included
    • Snap hook on safety cable ensures secure connection to breakaway lever
  • Durable steel construction
  • Primed finish
  • Weld-on installation
  • Made in the USA


Specs:

  • Application: trailers with hydraulic disc brakes
  • Ball size: 2-5/16"
  • Gross towing weight: 20,000 lbs
  • Maximum tongue weight: 2,000 lbs
  • Mounting: straight, 3" wide trailer tongue
  • Model number: DA20
  • 1-Year warranty


When you apply the brakes in your tow vehicle, deceleration occurs and momentum pushes your trailer toward the rear of your vehicle. With surge brake systems, the hydraulic actuator is triggered as your trailer moves forward, once your tow vehicle starts to slow down. When this happens, the actuator contracts, applying force to its master cylinder. This in turn supplies the necessary hydraulic pressure to engage your trailer's brakes.


Electric Reverse Lockout

The electric reverse lockout on this trailer brake actuator is automatically activated when you shift your tow vehicle into reverse. The solenoid wires into your trailer connector - which connects to your tow vehicle - so that it can detect when you are in reverse. When your vehicle is in reverse, the solenoid ensures that the hydraulic actuator does not activate your trailer's brakes, thus allowing you to back up your rig. To use the lockout feature, you must have a 5-pole flat, 6-way round, or 7-pole trailer connector.


eZ-Latch Coupler

The coupler portion of this trailer brake actuator features a simple-to-use latching mechanism known as the eZ-Latch. With this mechanism, hooking up is as easy as dropping the coupler over your trailer hitch ball. The latch does not need to be tugged or manually activated to allow the ball into the coupler socket, nor does it have to be secured in place. Just make sure that the coupler is properly lined up with the ball when you lower it, and the rest is automatic.


Demco eZ-Latch in Use


8204702 Demco DA20 Hydraulic Trailer Brake Actuator for Disc Brakes - Electric Lock-Out - 2-5/16" Ball - Easy Latch Coupler - 20,000 lbs





Video of Demco Hydraulic Brake Actuator w/ Electric Lockout - Disc - Primed - 2-5/16" Ball - 20,000 lbs

Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.




Video Transcript for Review of Demco Brake Actuator - Surge Brake Actuator with Lockout - DM8204702

Hello everybody, this is Jeff at etrailer.com. Today we can take a look at the Demco Hydraulic Disc Brake Actuator with the electric lockout and it's for a 2 and 5/16 diameter ball. Has a 20,000 pound gross toying weight capacity and you can see it's in a nice prime finish. Now this hydraulic actuator will activate your trailer's brakes when the tow vehicle slows or stops. Basically what happens is when you apply the brakes in your tow vehicle, deceleration occurs, and the momentum will push your trailer toward the rear of your vehicle. So with a surge brake system like this, this actuator's then triggered as the trailer moves forward once your tow vehicle starts to slow down and when this happens, this actuator will contract, applies force to the master cylinder back here.

And this in turn supplies the necessary hydraulic pressure to engage your trailer's brakes. This one uses a nice acetyl copolymer lining which provides a nice smooth operation as the actuator will telescope in and out. This one does use an easy latch coupler mechanism for a nice, simple, secure hookup and disconnect. Basically, it'll let you hook up when this latch is in the closed position like it is now, you just drop the coupler over the hitch ball and the latch will snap into place. You don't have to get out, open it, close it.

I wanted to try to demonstrate that. I happen to pull, here's a 2 and 5/16 size hitch ball. So if I can lift this up and you can see if I put it on there, with it on there, and then you just put the weight, push it down. If you noticed, it snaps right into place. That lever snapped into place to keep it there and you can see that you're connected.

No problem. So you don't have to open and close the latch all the time and you just leave it in this position. Now when you go to disconnect you just pull up on the latch it's a trigger latch right up here, release it, whoops. And then you'll be able to see once you put that up in the up position, it releases it. You can take it off the ball and now you're detached.

Simple as that. So it makes it very easy to connect and disconnect. And you swing this back over here. This is a heavy duty steel construction. Has a sturdy reinforced outer casing, as we mentioned, has a nice prime finish to it. Now the master cylinder in the back here it is a heavy duty aluminum master cylinder. It's very durable, rust proof, and efficient. It is built for high pressure applications and allows 50% greater displacement than a standard master cylinder. Under this shield back here, you should be able to see there is an electric reverse lockout solenoid. This will let you back up without actuating. your trailers brake. Basically that's solenoid will activate automatically when you shift into reverse. It does have wires on it, so it does have to be wired into your trailer connector, which will then connect your tow vehicle so that it can detect when you're in reverse. It does come with the breakaway cable and the latch hook. That's all included and it is required by law cause this will prevent a trailer runaway situation. And the way it does that is you take your hook, has a latch on it, and you, when you hook up your trailer to your tow vehicle then you take this hook and hook it to the tow vehicle. And what that does is in case this comes detached from the tow vehicle, it will pull on this cable which would activate that lever, which again would allow the pressure in here, supplies the pressure to engage the trailer brakes in a runaway situation. So again, this breakaway cable comes, is included, and it is required by law. Now this is a weld on installation. It is designed to mount to a straight 3 inch wide trailer tongue. It is made in the USA. Specs again, this is, for trailers with hydraulic disc brakes. Gross towing weight capacity is 20,000 pounds. Tongue weight maximum is 2,000 pounds. And this does also go by a model number of DA20. But that should do it for the review on this Demco Hydraulic Disc Brake Actuator with the electric lockout for a 2 and 5/16 diameter ball. Has a 20,000 pound gross towing weight capacity.

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See what our Experts say about this Demco Brake Actuator


Info for this part was:

Employee Lindsey S
Written by:
Lindsey S
Employee Jeff D
Installed by:
Jeff D
Employee Laura H
Updated by:
Laura H

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