Need help? We're here!
(888) 312-8812 Login SignupRelay Valve
The Bendix Air Brake Relay Valve speeds brake application on axles far from the foot valve by supplying air from a nearby reservoir. The foot valve sends only a small control signal, and the Bendix 800136 answers it by delivering full reservoir air to the chambers it serves. That keeps rear brakes from lagging behind the front on long wheelbase trucks and tractors. Listening for a sharp exhaust when the pedal is released is a quick way to confirm the valve is working.
| Balance / Primary Service Port | 1/8-27 NPT (with Cover) |
| Body Configuration | 2 SUP / 4 DEL (2H + 2V) |
| Cautionary Note(s) | Not applicable to this part |
| Control / Secondary Service Port | 1/4-18 NPT |
| Control Port Orientation (CW from Front Face) | 0Adeg |
| Crack Pressure | 4.0 PSI |
| Delivery Port 1 | 1/2-14 NPT |
| Delivery Port 2 | 1/2-14 NPT |
| Delivery Port 3 | 3/8-18 NPT |
| Delivery Port 4 | 3/8-18 NPT |
| Delivery Port 5 | Not applicable to this part |
| Delivery Port 6 | Not applicable to this part |
| Delivery Port 7 | Not applicable to this part |
| Delivery Port 8 | Not applicable to this part |
| Exhaust Port | Dust Shield |
| Internal Supply Passage to Cover | Not applicable to this part |
| Market Indicator | Aftermarket New |
| Maximum Operating Temperature | 200 AdegF (93 AdegC) |
| Minimum Operating Temperature | -40 AdegF (-40 AdegC) |
| Mounting | 5/16-18 UNC-2A Stud (2x) |
| Mounting Bracket Direction | Up |
| Mounting Bracket Location | Not applicable to this part |
| Mounting Orientation (CW from Front Face) | 180Adeg |
| Supply Port 1 | 1/2-14 NPT |
| Supply Port 2 | 1/2-14 NPT |
| TMC Washer | RV040 |
| Country of Origin (Primary) | MX |
| UPC | 04068078307977 |
| VMRS Code | 013010009 |
| Brand | Part Number |
|---|---|
| BW800136 | |
| N/A | 102802N |
Be the first to review this product!
Be the first to ask a question about this product!
Optional. Please do not use your full name.
Minimum 10 characters, maximum 500 characters
You can upload up to 3 images to help illustrate your question. Supported formats: JPG, PNG, GIF, WebP
Please complete the reCAPTCHA verification to submit your question.
California residents see


