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Specifications
Pinch Valve Tubing Options
Bio-Chem Valve supplies two choices of high-purity medical grade pinch valve tubing:
•
Silicone Select
TM
platinum cured silicone tubing
•
Bio-chem (C-Flex) tubing
Both tubing materials comply with USP XXII, Class VI, FDA and USDA standards and are FDA master file listed.
These tubing options have been specially developed to withstand the rigors of usage with pinch valves. The tubing
will not stick shut even after the valve has been in the closed position for an extended period of time. Excellent tubing
memory characteristics ensure unencumbered flow when the valve is in the open position. The Silicone Select
TM
tubing is rated for a minimum of 500,000 open-and close cycles, the Bio-Chem (C-Flex) tubing is rated for a minimum
of 350,000 cycles.
Due to its superior life cycle characteristic, the Silicone Select
TM
tubing is recommended for all pinch valve applications
except:
•
Bio-chem (C-flex) tubing is preferable in applications where gas permeability is at issue
•
Bio-chem (C-flex) tubing exhibits higher chemical resistance with certain media
Bio-Chem Valve pinch valves are supplied with tubing mounted in the valve:
•
2-way valves: one 12-inch (30 cm) tubing section
•
3-way valves: two 6-inch (15 cm) tubing sections joined by a “Y” connector
Tubing is easily replaced without removing the valve from the system. The tubing is also offered separately from the
pinch valves in 50-foot (15 meter) coils.
Note: Different tubing may be requested for special applications. In that case, tubing samples should be provided to
Bio-Chem Valve so that the appropriate adjustments in the valve settings can be made. Deviations from standard
Bio-Chem Valve pinch valve tubing usually results in reduced life cycle expectancy.
Tubing Dimensions and Part Numbers
Valve Part
Number
extension
50' (15m)
coil Part
Number
Silicone
Bio-Chem
(C-Flex)
I.D. (in/mm) O.D. (in/mm)
Wall thickness
(in/mm)
-10
10025-10
"
0.010" / 0.25mm 0.093" / 2.36mm 0.041" / 1.05mm
-23
10025-23
" "
0.023" / 0.58mm 0.093" / 2.36mm 0.035" / 0.89mm
-50
10025-50
"
0.050" / 1.27mm 0.134" / 3.40mm 0.042" / 1.07mm
-01
10025-01
" "
1/32" / 0.79mm 3/32" / 2.38mm 1/32" / 0.79mm
-02
10025-02
" "
1/16" / 1.59mm 1/8" / 3.17 mm 1/32" / 0.79mm
-03
10025-03
" "
1/16" / 1.59mm 3/16" / 4.76mm 1/16" / 1.59mm
-04
10025-04
"
3/16" / 4.76mm 1/4" / 6.35mm 1/32" / 0.79mm
-05
10025-05
" "
1/8" / 3.17mm 1/4" / 6.35mm 1/16" / 1.59mm
-06
10025-06
" "
1/4" / 6.35mm 3/8" / 9.52mm 1/16" / 1.59mm
-07
10025-07
" "
5/16" / 7.94mm 7/16" / 11.1mm 1/16" / 1.59mm
To identify the type of tubing when ordering 50-foot (15 meter) tubing coils, add the following designators to the part
numbers shown above:
•
S - Silicone Select
TM
tubing
•
B - Bio-Chem (C-Flex) tubing