LB78 Dump Valve
The LB78 Dump Valve enables exhaled gases to be expelled at an ambient pressure level lower than that of breathing. It is used specially for evacuating to the outside of an hyperbaric chamber the oxygen rich mixtures breathed during decompression or therapeutic treatments.This prevents oxygen build-up in the atmosphere of the chamber, thus minimising fire risks.
The overpressure created by the expiration operates a diaphragm which, in turn, opens a large diameter fully balanced exhaust valve.
A large gas flow is thus obtainable with a minimum driving overpressure.
It is equipped with a safety valve which prevents any dangerous pressure-drop in the breathing circuit, in the event of the main valve leaking.
Description:
The LB 78 oxygen dump-valve features a circular housing made of medical POM-C easy to clean.
The stainless steel threaded locking ring gives quick access to the diaphragm to ease cleaning and periodic maintenance.
Characteristics:
• Fully rated for use with pure O2 under pressure
• Operating differential pressure: 0.1 to 5 bar
• Maximum instant flow rate: > 400 l/min
• Dump Valve opening: 2 millibar (overpressure)
• Safety valve opening: -2 millibar (underpressure)
• Diaphragm made of silicone
• Weight: 900 g
• Diameter: 127 mm
• Height: 65 mm
Old chrome-plated version no longer available
Maintenance Kits for old version remain available (refer to reference table below)
Corrugated Hose (sold separately):
• Heavy-duty LP Hose to connect the dump valve to the Oronasal mask
• Made of Medical Silicone
• Length: 800 mm
2.5.0.0