PSVTM
Pressure Setting Valve
Operating Instructions
Your VARILITE™ PSV™ air-foam floatation cushion uses an innovative air valve to control the amount of
immersion for optimal pressure distribution. PSV stands for Pressure Setting Valve
VARILITE PSV makes it easy for a user or caregiver to adjust the cushion.
The PSV is marked with three pre-determined positions, labeled “1”, “2”, and “3.”. The least amount of air is
released when the number “1” appears in the indicator window. More air is released, and more immersion
occurs, as the valve is opened to positions “2” and “3”.
For best results, the initial fitting of a VARILITE PSV cushion should be completed by a therapist, a certified dealer
representative, or other qualified seating specialist who should determine which pre-determined position is
appropriate. (If the user falls outside the pre-determined range, the seating specialist can mark a different position
on the PSV.)
The cushion is intended to be adjusted daily. For proper adjustment, follow the steps listed below.
1. Start with the cushion fully inflated. To inflate,
open the valve by turning it counterclockwise.
(patent pending)
. The
2. Close the valve by turning it clockwise and sit
on the cushion.
3. Open the valve by turning it counterclockwise
until the pre-determined position number
appears in the indicator window. Air will
escape until the valve automatically shuts off
(approximately 10-15 seconds).
4. Once the valve has shut off the release of air,
close the valve by turning it clockwise. This
will prevent the inadvertent release of
additional air due to weight shifting,
transferring, manual propelling, and so forth.
5. When finished with the cushion for the day,
open the valve by turning it counterclockwise.
Let the cushion rest fully inflated with the valve
open overnight.
Indicator
Window
Open
Note: To prevent bottoming-out, never release all the air from a VARILITE PSV cushion.
Close
31-087 Rev 10/03
PSVTM
Pressure Setting Valve
The PSV is located on the right side of VARILITE cushions. For operation
from the left side, remove the cushion from the cover and rotate the PSV
180°. To prevent damage to the valve body, use a 1/2 in. open-end
wrench, open the valve all the way, and place the wrench on the flat
shoulders at the base of the valve body.
A low-slip material is used on the underside of all VARILITE PSV cushion covers to prevent the cushion from sliding in the
wheelchair. For extra security, PSV cushion covers have loop sewn to the low-sip material that can be attached to a drop
base or solid seat with adhesive hook (provided).
All VARILITE PSV cushions covers accommodate Rigidizers, also know as solid inserts, which are an effective and
inexpensive way to provide the pelvis with a firm, level base of support while promoting an anatomically neutral position.
Solid inserts are available for purchase by calling VARILITE Customer Service at 1-(800)-827-4548.
Turn here
with wrench
To ensure long life and optimal performance of your VARILITE PSV cushion:
• Never leave your VARILITE PSV cushion exposed to extreme weather conditions such as heat, cold or UV rays.
• Check your cushion’s inflation level when you change altitudes. If punctured or if the valve is left open, the cushion will
deflate under pressure. In the unlikely event of a puncture, immediately contact an authorized VARILITE dealer or VARILITE
Customer Service.
• Never put your VARILITE PSV cushion in a washing machine. Your cushion may be wiped with warm water and mild
detergent, and the covers should be washed, with the zipper closed, according to the instructions on the care and use label.
Be sure all components are completely dry before reassembling. Do not autoclave.
• Your VARILITE PSV cushion always should be used with its cover. The cover protects the cushion from punctures, burns and
being soiled, and it enhances pressure distribution and promotes air circulation for healthy tissue.
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