Sealco 110139 Service Relay Valve - 4 Delivery Ports with Ratio Feature

Part Number:680-110139
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$104.06 USD
Sealco 110139 Service Relay Valve - 4 Delivery Ports with Ratio Feature
Qty in Stock: 5
Add'l Qty (1-4 days): 6
Quantity in Stock reflects available inventory as of 5:00 AM CST.

Product Details

Special Notes
Product Description
Manufacturer: Sealco
Condition: New
Ratio Feature
Do not use this valve on converter dollies, trailer turntable axles or lift axles
4 Delivery ports
Auxiliary supply port = 3/8" pipe thread
Control port size = 3/8" pipe thread
Reservoir port size = 3/4" pipe thread
Delivery port size = 3/8" pipe thread
Nominal crack pressure = 4.5 psi

The Ratio Feature is considered a benefit in hard stop situations and refers to the relationship between the control air pressure to the valve and the delivered air pressure from the valve to the service brake chambers. During normal stopping, a 1:1 ratio exists between the control and delivered air pressures. In a hard stop, the ratio momentarily changes to 1:1.5 until valve lap-off occurs and the ratio is restored. This change takes place in less than 1/100th of a second.

Cross References: 110139, 680-110139, 110126, ESL110139, 102616, 12343, 12345, A103600, A86477, 55110139, 39540263
A cross reference listing means that this valve should be a suitable replacement for the part numbers listed. You should check the description to be sure it will work in your application.

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