The handwheel pressure reducer integrates manual on/off control with pressure reduction functionality, typically mounted on the cylinder valve or backplate. Users can conveniently open or close the air supply via the handwheel while the device precisely reduces high-pressure air to intermediate pressure for the breathing circuit. Its intuitive operation and stable performance make it a core control component of SCBA systems.
- Features a handwheel-operated shut-off valve; rotating the handwheel smoothly opens or closes the air supply with tactile feedback, operable even with gloves.
- Built-in first-stage reduces cylinder pressure (up to 300 bar) to intermediate pressure (0.6–0.9 MPa) with flow capacity ≥1000 L/min, meeting high respiratory demands.
- Outlet equipped with standard threaded connections for medium-pressure hoses or quick couplings.
- Integrated high-pressure relief device automatically vents excess pressure in case of abnormal cylinder pressure, preventing overpressure hazards.
- Housing constructed from high-strength engineering plastic or stainless steel, resistant to corrosion and aging for long-term use in harsh conditions.
- Optional low-pressure alarm whistle activates when cylinder pressure drops to a preset level (e.g., 55 bar), providing audible warning for evacuation.
1. Intuitive Handwheel Control: Traditional handwheel design allows clear on/off status recognition, reducing operational errors.
2. High Flow Capacity: Strong flow capability ensures ample air supply even during strenuous activities.
3. Precise Pressure Regulation: Internal mechanism maintains stable output pressure regardless of input fluctuations.
4. Multiple Safety Features: Integrated safety valve and rupture disc guarantee reliability under extreme conditions.
5. Modular Compatibility: Adaptable to various cylinder interfaces, simplifying inventory management.
Suitable for firefighting, industrial safety, mining, petrochemical, diving, medical air supply, and other fields, especially in traditional environments requiring manual air control.
