How can I tell if my valve is working properly?

Rubber attachment stretches over the fitting and penetrates over 1/2 inch for a secure attachment.

Slide valve com­plete­ly cov­ers ports in either position

The slide valve uses an inter­nal slid­ing plate to cov­er one of two inter­nal ori­fices. The open com­part­ment allows either oxy­gen rich, or oxy­gen reduced air to go to the mask.

When the slide valve is adjust­ed prop­er­ly, one hole at a time will be com­plete­ly cov­ered. When the switch is moved to the oppo­site posi­tion, the slide gate will ful­ly seal the oth­er hole.

Note the gate is properly aligned when the cable is relaxed.

Note the gate is prop­er­ly aligned when the cable is relaxed.

Two issues may occur:

  1. When the cable is tight­ly wound or left in the coiled pack­ing con­fig­u­ra­tion, the con­trol cable can become crowd­ed against the sides of the cable hous­ing caus­ing the gate to mis­align and par­tial­ly cov­er both holes. Use in this posi­tion yields air from both com­part­ments dur­ing oper­a­tion. To fix: 
    • Uncoil the cable control
    • Check the gate align­ment to con­firm it prop­er­ly seals over either hole
  2. Installation or usage par­tial­ly dis­lo­cat­ed the cable hous­ing mounts in either the valve hous­ing, or the con­trol assem­bly. The slide plate mech­a­nism isn’t respond­ing prop­er­ly. See video…