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(888) 312-8812 Login SignupRelay Valve
On a tandem-axle trailer, the Bendix Relay Valve lets the rear axle's brake chambers fill from a local reservoir instead of waiting on air routed all the way from the front. That local supply keeps both axles applying brakes at nearly the same moment, rather than the rear axle lagging while air travels the trailer's length. The Bendix 801620 mounts to the same reservoir and delivery ports the relay valve it replaces used, so the trailer's plumbing needs no changes. Both axles staying in step protects tires and brake linings from the uneven wear a lagging axle causes.
| 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) | 90Adeg |
| 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 | 04068078304372 |
| VMRS Code | 013010009 |
| Brand | Part Number |
|---|---|
| BW801620 | |
| N/A | 102802N |
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