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(888) 312-8812 Login SignupImprove brake response at the rear axles with the Sealco Air Brake Relay Valve. This relay valve reacts to a low 4.0 PSI control signal, allowing air to move quickly as soon as the treadle valve is applied. That rapid response is distributed through four delivery ports, helping apply braking force evenly across multiple wheel ends. A 3/8-inch NPT control port receives the signal from the primary circuit, while the valve body is built to handle exposure along the chassis. By shortening the distance air must travel during brake application, the Sealco 110415 relay valve helps reduce delay between pedal input and brake response.
| Control Port | 3/8 in. NPT |
| Delivery Ports | 3/8 in. NPT |
| Nominal Crack Pressure | 4.0 psi |
| Notes | with Nipple Fitting |
| Reservoir Port | 3/4 in. NPT |
| Type | 4-Delivery Ports |
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Based in Phoenix, AZ, Sealco® designs and manufactures aftermarket brake and electrical components for commercial vehicles. It specializes in air and anti-lock brake parts and is consistently the leading low-cost producer of trailer air brake valves in North America. Sealco valves are well-recognized in the industry for their remarkable quality, with a patented zinc alloy construction that's pneumatically and submersion-tested to ensure zero leakage. This dedication to quality has made Sealco Commercial Vehicle Products the primary service provider authorized by Meritor WABCO to service and sell their ABS systems to trailer OEMs. Sealco products are also designed, engineered, and assembled in the U.S.A with warehouses in Indiana and Arizona to ensure products are shipped within 48 hours upon receipt of order.
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