Description
RA503 – QUICK EXHAUST VALVE 3/8" NPT QE3 STYLE, HIGH FLOW, INLINE MOUNT
PART NUMBER(S):
Fleet Products: RA503 | OE: RA503
DESCRIPTION:
Model: Quick Exhaust Valve (QE3 Style, 3/8" NPT)
Vehicles: Compatible with truck and trailer pneumatic systems requiring rapid air evacuation
• Type: Quick exhaust valve
• Application: Pneumatic exhaust systems
• Port Size: 3/8 in NPT
• Dimensions: 2.38 × 1.50 × 2.08 in
• Mounting: Inline
• Material: Aluminum diecast body, Buna-N seals
• Operating Pressure: 2-150 PSI
• Temperature Range: -25°F to 180°F
• Flow: 155 SCFM @ 100 PSI
• Flow Capacity Cv: 2.58
• Features: Automatic operation, convertible to check valve, shuttle valve capable
Applications:
Used in air brake systems, lift axle circuits, and general pneumatic control where fast venting is needed. Ideal for truck and trailer air systems needing rapid exhaust to atmosphere. Designed to improve response time of actuators and chambers.
CROSS-REFERENCE(S):
RA503, QE3
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:
✔ Use only 3/8" NPT fittings for all three ports
✔ Add muffler to exhaust port if noise reduction is required
✔ Ensure correct orientation to control port and actuator for optimal function
✔ Plug exhaust port if using as a check valve
✔ Regular inspection advised for contamination buildup in high-dust environments
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Warranty Information
