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Brakes› Brake Systems And Components

Sealco

4-Port Non-Charging Emergency Relay Valve

$1,813.10 $201.99 Save $1,611.11

SKU: 110338

In Stock
In Stock
Ships by Sep 9
Free Shipping over $200
$100 Minimum Order
30 Days Return
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Overview

The Sealco 110338 is an emergency relay valve designed for heavy-duty truck braking systems. This valve features a four-port, non-charging style.

It includes a 3/8" NPT supply port, a 3/8" NPT control port, and a 3/4" NPT reservoir port. The valve is commonly used on converter dollies, turnable axles, heavy haulers, ag trailers, and air lift axles with service brake chambers.
Show original supplier description
The Sealco 110338 Emergency Relay Valve is a critical component for ensuring reliable braking in heavy-duty vehicles. This valve is engineered with a four-port, non-charging design for efficient operation. Key connection specifications include a 3/8" NPT supply port, a 3/8" NPT control port, and a 3/4" NPT reservoir port, facilitating integration into various air brake systems. The material of construction is noted as aluminum. This emergency relay valve finds common application in specialized trailer and axle configurations. It is frequently utilized on converter dollies, turnable axles, heavy haulers, agricultural trailers, and air lift axles equipped with service brake chambers. Its role is essential in providing both emergency and parking brake functionality.

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

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Specifications

BrandSealco
Part Number110338
CategoryBrakes

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Returns & Fitment

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

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