103061-G | Spring Brake Valve (1/2" Nut, SR-2 Style)

SPRING BRAKE VALVE (1/2" NUT) (2)

PART NUMBER(S):

Fleet Products: 103061-G | OE: 103061 | Automann: RB-103061

DESCRIPTION:

Model: SR-2 Trailer Spring Brake Valve (1/2" NPT Reservoir)
Vehicles: Trailers equipped with dual air brake systems
• Valve Type: SR-2 spring brake valve with integral pressure protection and check valves
• Reservoir Port: 1 x 1/2" NPT (main mounting port)
• Delivery Ports: 4 x 3/8" NPT
• Supply Port: 1 x 1/4" NPT
• Service Ports: 2 x 1/4" NPT
• Exhaust Port: 1 x 3/8" NPT
• Thread Type: NPT (all ports)
• Function: Controls trailer parking and emergency spring brake operation
• Compliance: Meets FMVSS-121 standards
• Mounting: 1/2" NPT thread (used for direct reservoir mount)
• Operating Capability: Allows spring brake release at least once before full application
• Weight: Approx. 2.7 lbs
• Safety Features: Delivered with protective safety caps to prevent thread/mechanism damage before install
• Performance: OEM-grade reliability with validated component fitment

Applications:
Used primarily in trailer systems with dual air tanks, this spring brake valve ensures safe and regulated spring brake release. It mounts directly to a 1/2" NPT reservoir port and controls both parking and emergency braking functions, isolating pressure failures through integrated protection features.

CROSS-REFERENCE(S):

103061, 62103061, 90554107, KN103061, WA103061, BWN103061N, 175103061, BX103061N, K033217, 801363, OR103061, 103061X, 103061N, 103061R, 103061RX, AV103061, R955103061N, R955103061X, TDAR955103061N, BAN103061, BX103061, ZAC103061, 103061P, 401185, 034031, 170.103061, S-A149, K103061, 270-EBN103061N

A cross-reference listing means this part may be a compatible replacement for these part numbers based on OEM or distributor data.

IMPORTANT INSTALLATION NOTES:

✔ Mounts directly to trailer reservoir using 1/2" NPT threaded nut
✔ Ensure thread cleanliness—install with protective safety caps removed
✔ Validate port assignments per schematic: 1 supply, 2 service, 4 delivery, 1 exhaust
✔ Designed to prevent automatic application upon reservoir failure
✔ Confirm all port threads are NPT before install—do not force non-matching fittings
✔ No torque specs officially provided—use standard air valve torque ranges per fleet procedure

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