SPECIFICATION:

APL (Adjustable Pressure Limiting) Valve is used in medical ventilators, anesthesia machines, or breathing systems to regulate pressure and ensure patient safety. Here’s a general specification example related to such a circuit:

Mapleson System Circuit with APL Valve – Short Specification (Hypothetical)

1. Circuit Type: Mapleson Circuit
   • System: Typically, a non-rebreathing anesthesia circuit, used in controlled ventilation systems.
   • Usage: Ideal for spontaneous or manual ventilation of patients during anesthesia or ICU settings.
2. APL Valve (Adjustable Pressure Limiting Valve):
   • Pressure Range: Adjustable from 0 cmH₂O to 70 cmH₂O.
   • Function: Controls maximum pressure in the circuit, protects the patient from excessive pressure.
   • Material: High-grade medical polymer or stainless steel (contact parts).
   • Flow Rate: Compatible with standard O₂ flows, typically 2–12 L/min.
3. Tubing:
   • Length: 1.5 to 2 meters, with low compliance material.
   • Material: Medical-grade silicone or polyvinyl chloride (PVC), latex-free.
   • Heat/Cold Resistance: Resistant to autoclaving and low-temperature disinfection.
4. Patient Connector:
   • Connector Size: Standard 22mm/15mm connectors for compatibility with different masks or endotracheal tubes.