Description
801116 ST-4 SAFETY VALVE – BA-921
PART NUMBER(S):
Fleet Products: 801116 | Replaces OE: Bendix: 801116, BE801116
DESCRIPTION:
Model: Bendix ST-4 Safety Valve
Vehicles: Bendix BA-921 air compressors used in heavy-duty truck and trailer air brake systems
• Pressure Setting: 250 PSI
• Pressure Tolerance: ±10 PSI
• Thread/Inlet Port: 7/8-14 UNF-2A
• Port Type: Straight Thread O-Ring Port
• Function: Pressure Relief / Pop Off
• Number of Holes: 2
• Material: Brass & Stainless Steel
• Hex Size: 15/16 in
• Length: Approx. 1.25 in
Applications:
Used on Bendix BA-921 compressor heads as a preset safety pressure relief valve for truck and trailer air brake systems. The valve relieves excess pressure from the compressor head and is typically replaced when leaking, damaged, contaminated, or no longer opening at the specified pressure.
CROSS-REFERENCE(S):
BW801116, HVG801116, 2255222, K801116, BX801116, WA801116, 170.801116, AV801116
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:
✔ Install directly into the 7/8-14 UNF-2A port on the BA-921 compressor head
✔ Confirm port orientation, thread type and sealing surface before installation
✔ Install with a new O-ring and verify threads are clean and undamaged
✔ Do not adjust valve setting; this valve is preset at the factory
✔ Confirm valve vents properly and does not leak after system pressure test
✔ Opening pressure: 250 ± 10 PSI
✔ Torque to compressor head specification
Warranty Information
