Description
110139-G - SEALCO RD045 RATIO RELAY VALVE - 4 DELIVERY PORTS, 4.5 PSI CRACK PRESSURE
PART NUMBER(S):
Fleet Products: 110139-G (New) | Replaces OE: Sealco: 110139 | Meritor: RSL110139 | Automann: 170.110139 | Velvac: 032103 | TRAMEC: 51444 | WAGNER: A85490, A97600 | BERG: 12345, 12343 | BENDIX: 102626, 065104, 279952, 280651
DESCRIPTION:
Model: Sealco RD045 Ratio Service Relay Valve
Vehicles: Tandem axle trailers using compatible non-ABS service brake systems
• Valve Type: Non-ABS ratio service relay valve
• Control Port: One 3/8" NPT female
• Supply/Auxiliary Port: One 3/8" NPT female
• Reservoir/Tank Port: One 3/4" NPT female
• Delivery Ports: Four 3/8" NPT female
• Nominal Crack Pressure: 4.5 PSI
• SAE J1860 Identification Tag: RD045
• Normal Braking Ratio: 1:1
• Temporary Boost Ratio: 1:1.5 during rapid brake applications
• Mounting: Direct tank-mounted configuration
• Function: Uses control pressure to rapidly deliver reservoir air to four service brake chamber connections
Applications:
Designed for tandem axle trailer service brake systems requiring a four-delivery-port relay valve with a nominal 4.5 PSI crack pressure. The valve operates at a 1:1 ratio during normal braking and momentarily increases delivery pressure during rapid applications. It is not intended for converter dollies, lift axles, or trailer turntable axle systems.
CROSS-REFERENCE(S):
110139X, 110147, 110600, 110600X, 110126, 110143, 110583, 110005, 110118, 110673, 02-055, 032102, 10003890, 102616, 12343, 12345, 12900076, 13010046, 14406, 170110139, 170.110139P, 170.110139XB1, 2RSL110139, 322-GN110139, 39540263, 401132, 430-20094, 51444, 55110139, 680-110139, 802605, 8235RSL110139, A100042346, A103600, A86477, AM170110139, AMMTRRSL110139, AV110139, BBH110139, BWR110139, E-SL110139, E7HZ-2A016-A, GN110139, HYU10003890, LIK110139X, MID110139, MSV110139, M-110139, R6552, PF SEA110139, RORSL110139, SA110139, SC110139, SEA110139, SEA110139N, SEA-110139, SEO110139, SL110139, S-17736, S17736, TDARSL110139, TR110139, TV110139, WWS110139, 20SC110139
A cross-reference listing means this part may be a suitable replacement for the listed part numbers. Always verify fitment before installation.
IMPORTANT INSTALLATION NOTES:
✔ Fully depressurize the trailer air brake system before removing or installing the valve.
✔ Confirm one 3/8" control port, one 3/8" supply/auxiliary port, one 3/4" reservoir port, and four 3/8" delivery ports.
✔ Verify the application requires a nominal 4.5 PSI crack pressure and the RD045 ratio configuration.
✔ Mount securely to the reservoir, reconnect all lines according to the trailer pneumatic schematic, and apply thread sealant sparingly.
✔ Pressurize the system and verify balanced service brake response, ratio operation, release performance, and no air leakage.
Warranty Information
