Description
Tramec 0103223 SR2 SR-2 Spring Brake Valve with Anti-Compounding
Controls spring brakes on trailers; releases spring brakes after reservoir pressure loss; prevents compounding of spring and service brake forces. Commonly used in heavy-duty trailers with dual air brake systems. The valve supports safe modulation of the spring brakes and complies with FMVSS 121 safety regulations. This valve allows the spring brake to release once after reservoir pressure is depleted and prevents service brake force from compounding during application.
Specifications
Vehicles: Dual-circuit trailer air brake systems
• Delivery Ports: Four 3/8″ NPT
• Reservoir Ports: Two 1/4″ NPT and one 3/4″ NPT
• Supply Port: One 1/4″ NPT
• Trailer Service Port: One 1/4″ NPT
• Exhaust Port: One 3/8″ NPT
• Thread Type: NPT throughout
• Mounting: 3/4″ male pipe thread to trailer brake reservoir
• Anti-Compounding: Yes
• Brake Charging Priority: Spring brake priority
• Closing Pressure: 70 PSI
• Operating Temp Range: -50°F (–45°C) to 200°F (93°C)
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