User Manual

Valves
SKC bag fi  ing valves are extremely durable but are not intended for use as handles
or hanging devices. This type of handling may damage the seal causing leakage.
It is considered to be misuse and will void the SKC warranty.
Proper Bag Infl ation
Avoid fi lling any bag more than 80% of its maximum volume. At the end of the
sampling period, turn off the pump and close the valve on the bag.
Filling Bags Using Negative Pressure
The SKC Vac-U-Chamber is a rigid air sample box that allows the direct fi lling of
an air sample bag using negative pressure provided by most personal air sample
pumps. When using the Vac-U-Chamber, the air sample enters the bag directly,
without passing through the pump. This eliminates the risk of contaminating the
pump or sample. The Vac-U-Chamber has rigid walls that will not collapse under
vacuum conditions, thus eliminating possible errors. All surfaces in contact with
samples are constructed of inert materials.
Small Vac-U-Chamber (supplied without pump) with polypropylene fi ttings;
suitable for use with 1-liter bags .................................................................Cat. No. 231-940
Large Vac-U-Chamber (supplied without pump) with stainless steel fi ttings;
suitable for use with 8-liter bags .................................................................Cat. No. 231-939
Extra-large Vac-U-Chamber (supplied without pump) with stainless steel fi ttings;
suitable for use with 10-liter bags ...............................................................Cat. No. 231-944
Jumbo Vac-U-Chamber (supplied without pump) with stainless steel fi ttings;
suitable for use with 25-liter bags ...............................................................Cat. No. 231-946
See Accessories on page 4 for tubing.
SKC sample bags are available in Tedlar
®
, FluoroFilm FEP, SamplePro
FlexFilm, Standard FlexFoil
®
, and FlexFoil PLUS with fi ttings made of stainless
steel, polypropylene, or PTFE in sizes ranging from 0.5 to 100 liters. SKC
also manufactures custom sample bags. Contact SKC at 724-941-9701 or
[e-mail].
For sample bag stability reports,
visit www.skcinc.com/bags.asp.
Incorrect
Infl ation
Correct
Infl ation
3