Description
SEALCO SPRING BRAKE PRIORITY VALVE – SPRING BRAKE CONTROL VALVE
PART NUMBER(S):
Fleet Products: 110500-G (New) | OE: Sealco 110500, Haldex 110500X, Bendix KN26000X, Meritor RSL110500
DESCRIPTION:
Model: Spring Brake Priority Control Valve
Vehicles: Commercial trailers and tandem axle brake systems with spring brake actuation
• Supply Port: 3/8" NPT
• Control Port: 3/8" NPT
• Reservoir Port: 1/2" NPT
• Delivery Ports: (2–4) x 3/8" NPT (depending on configuration)
• Nominal Crack Pressure: ~4.0 PSI
• Mounting: Direct or nipple-mounted (bracket versions available as 110505, 110510)
• Function: Spring brake priority design releases spring brakes first, then fills service reservoir (~80 PSI threshold)
• Built-in pressure protection to prevent brake compounding
• FMVSS 121 compliant
Applications:
Is this valve right for your trailer brake system? Yes—this aftermarket Sealco 110500-G is engineered for spring brake priority control, ensuring parking brakes release first before the system builds service pressure. Ideal for single or tandem axle trailers across cargo, utility, and commercial fleet use where compliance and safety are paramount.
CROSS-REFERENCE(S):
Sealco 110500, Bendix K025778, KN26000X, Haldex 110500X, Meritor RSL110500, Fontaine 55710035, Tramec Sloan 51301, Dayton AV110500, Freightliner BWK025778, Euclid ESL110500, Triangle TRA51301, World American WA110500, Genuine Newstar S-20219, Automann 170.1105
A cross-reference listing means this part is a suitable replacement for the part numbers listed. Please confirm all ports and dimensions match your application before installing.
IMPORTANT INSTALLATION NOTES:
✔ Confirm supply, control, and delivery ports match the valve being replaced.
✔ No repair kits available—replace as a complete unit when defective.
✔ Use correct nipple or bracket (110505/110510 variants) for mounting and port orientation.
✔ Verify crack pressure (~4.0 PSI) matches system design for proper operation.
✔ Apply approved thread sealant to all NPT fittings and install per FMVSS 121 standards.
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Warranty Information
