

MILTON MIL-99773 Safety Air Coupler, A-Style, 1/4" FNPT, Push Button
Prevent Accidental Disconnects - Milton A-Style Safety Air Coupler (MIL-99773, 1/4" FNPT)
OSHA-Compliant Push Button Air Coupler for Safe Tool Operation
The Milton MIL-99773 safety air coupler is a professional A-style fitting that prevents dangerous accidental air line disconnections in workshops and industrial facilities. This 1/4 in (6.35 mm) FNPT safety coupler delivers up to 36 SCFM airflow while maintaining OSHA compliance for workplace safety.
Key Benefits
Two-Step Safety Release - Push once to stop airflow, push twice to release the plug, eliminating dangerous surprise disconnections.
OSHA-Required Safety Compliance - Meets mandatory safety standards for specific industrial applications, ensuring your workspace complies with federal workplace safety regulations without additional modifications.
High-Performance Airflow - Delivers 36 SCFM through 1/4" basic flow size, providing sufficient air volume for pneumatic tools, spray guns, and air-powered equipment without flow restrictions.
Perfect Applications
Perfect for professionals who need reliable air tool connections:
- Automotive repair shops and tire service centers.
- Manufacturing facilities with pneumatic equipment.
- Construction sites requiring OSHA-compliant air fittings.
- Machine shops and fabrication workshops.
- Any environment where accidental air line disconnects pose safety risks.
Technical Specifications
| Specification | Value |
|---|---|
| Model Number | MIL-99773 |
| Connection Type | 1/4 in (6.35 mm) Female NPT |
| Coupler Style | A-Style Safety |
| Maximum Pressure | 300 PSI |
| Airflow Capacity | 36 SCFM |
| Temperature Range | Up to 250°F (121°C) |
| Seal Material | Buna-N |
| Compatibility | Standard pneumatic tools and air hoses |
| Quantity | 1 piece |
| Safety Compliance | OSHA Required |
Installation Requirements
Simple installation process for immediate use:
- Ensure air system is depressurized before installation.
- Apply thread sealant to 1/4" FNPT male fitting if needed.
- Thread coupler onto air hose or manifold hand-tight plus 1-2 turns.
- Test connection at low pressure before full operation.
Upgrade Your Air System Safety Today
Don't risk injury from accidental air line disconnects. The Milton MIL-99773 safety air coupler provides OSHA-compliant protection with professional-grade performance for your pneumatic tools and equipment.
Order now for safer, more reliable air tool operation.
Frequently Asked Questions
How does the push button safety mechanism work?
Push once to stop airflow completely, then push a second time to safely release the plug. This deliberate two-step process prevents accidental disconnections during tool operation, reducing workplace injury risks and meeting OSHA safety requirements for specific industrial applications.
Is this safety coupler required by OSHA in all workplaces?
OSHA requires safety couplers in specific industrial applications and work environments where pneumatic tools are used. Check your local workplace safety requirements and industry regulations to determine if this safety equipment applies to your particular facility and operations.
Will this work with standard air hoses and pneumatic tools?
Yes, the 1/4 inch FNPT threading is compatible with standard air hoses and most pneumatic tools including impact wrenches, spray guns, and air ratchets. It provides 36 SCFM airflow capacity which supports efficient operation of professional-grade pneumatic equipment.
How does this compare to regular quick-connect couplers?
Unlike standard quick-connect couplers that can accidentally release under pressure, this safety coupler requires deliberate two-step disconnection to prevent whipping hoses and potential injury. Regular quick-connects offer convenience while safety couplers prioritize workplace protection and OSHA compliance.
What is the maximum temperature this coupler can handle?
The Milton MIL-99773 safety air coupler operates reliably in temperatures up to 250°F (121°C), making it suitable for most industrial applications including heated workshops, engine bays, and manufacturing environments where elevated temperatures are common.
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