SteelDog - R-12 Air Brake Relay Valve, 4 PSI Crack Pressure (OEM/Ref #065476) (SKU# 09742)
Relay Valve - 065476 - High-Performance Air Brake Control for Heavy-Duty Trucks
The Relay Valve 065476 is an integral part of heavy-duty air brake systems, engineered to enhance braking response and efficiency by quickly directing air from the supply reservoir to the brake chambers. Ideal for long wheelbase vehicles and multi-axle configurations, this valve reduces brake lag and ensures consistent, balanced braking performance across all axles.
Constructed with a corrosion-resistant aluminum housing and precision-engineered internals, the 065476 relay valve offers reliable operation under demanding conditions. Designed to meet or exceed OEM and DOT standards, it's a direct replacement for a wide range of commercial vehicle applications.
Specifications:
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Part Number: 065476
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Type: Standard Relay Valve
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Material: Cast Aluminum Body with Brass or Composite Internal Components
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Ports:
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Supply Port: 3/8" NPT
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Control Port: 1/4" or 3/8" NPT (varies by application)
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Delivery Ports: 3/8" or 1/2" NPT
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Mounting Style: Bolt-On - Horizontal or Vertical
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Operating Pressure Range: 70- 120 PSI
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Temperature Range: -40°F to 180°F (-40°C to 82°C)
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Weight: Approx. 2.8 lbs
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Serviceability: Field-Serviceable Design
Features:
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Speeds air delivery to brake chambers, reducing lag
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Ideal for tandem axles, trailers, and long-frame vehicles
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High-durability casting resists vibration, corrosion, and pressure fatigue
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Compatible with most OEM air brake configurations
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Complies with FMVSS 121 and SAE J1469 standards
Vehicle Applications:
| Vehicle Type | System Use | Application Notes |
|---|---|---|
| Class 7-“8 Trucks | Air Brake System - Drive Axles | For primary or secondary systems |
| Semi-Trailers | Brake System Relay | Mounted near axle groupings |
| Buses & Vocational Vehicles | Service Brake Control | Supports faster and balanced braking |
Note: Confirm port orientation and thread sizes to ensure proper fit and functionality within your specific air brake setup.
Free shipping on orders over $1,500.00
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