Koganei CVR01 Series User manual

Symbol
Inner Construction, Major Parts and Materials
●Check valves in which media flows in one direction.
These valves restrict flow in the other direction.
●Mounting is simple due to the integrated quick fittings.
They are perfect for compact piping.
●Excellent durability and the electroless nickel plating fits
standard specifications.
Minimum operating differential pressure
Recommended tube
0.01 MPa [1 psi] or less
Nylon tube, urethane tube
Sales unit 1 pc.
Operating temperature range
-0.1〜0.9MPa [-15〜131 psi] Operating pressure range
0〜60℃[32〜140℉]
Minimum non-return differential pressure 0.02 MPa [3 psi]
AirMedia
Specifications
KCF2651Z
Body configuration and control direction (only to CVS and CVR)
Elastic sleeve (NBR)
Sealant coated
Tube
Release ring (polyacetal)
Lock claw (stainless steel)
Tube end
Valve body (aluminum)
Spring pin (stainless steel)
Metal body (brass Note, electroless nickel plated)
Guide ring (brass, electroless nickel plated)
O-ring (NBR)
KCB2661Z
Free flow direction A
Connecting thread side
Free flow direction A
Male thread side
Free flow
CVS
Release
ring side
Free flow direction B
Connecting thread side
Release
ring side
Free flow
Free flow
CVR
Female thread side
Free flow direction B
Male thread side Female thread side
Free flow
CHECK VALVES
032016

Order codes
CVR
Connecting thread size
Free flow direction
A── Inlet on male thread side
B── Inlet on release ring side
Dimensions mm
Shape and control direction
KCB2661Z
Free flow direction A
Connecting thread side
Free flow direction B
Male thread side
Free flow
CVS
Release
ring side
Free flow direction B
Connecting thread side
Release
ring side
Free flow
Free flow
CVR
Female thread side
Free flow direction A
Male thread side Female thread side
Free flow
KCB2661Z
Free flow direction A
Connecting thread side
Free flow direction B
Male thread side
Free flow
CVS
Release
ring side
Free flow direction B
Connecting thread side
Release
ring side
Free flow
Free flow
CVR
Female thread side
Free flow direction A
Male thread side Female thread side
Free flow
Male thread
ー
Female thread
●CVR
1/8 01
02
03
04
1/4
3/8
1/2
Thread size R, Rc
Model sample: CVR02A
Metal
body
1/8,1/4
3/8,1/2
Brass (nickel plated)
Aluminum
Thread size MaterialName
Model R Rc A1 A2 B LNote 1
Width
across
flats
H
Effective
area
mm
2
Mass
g
CVR01□R1/8 Rc1/8 8 9 26.3 22.3 14 6 22
CVR02□R1/4 Rc1/4 11 11 33 27 17 14.5 37
CVR03□R3/8 Rc3/8 12 12 52 45.7 24 52 38
CVR04□R1/2 Rc1/2 15 15 62 53.8 27 78 57
Note 1: The L dimensions for the tapered thread type are the reference dimensions after the fittings are
assembled.
2: Put A in the □for the model number for input from the male thread side. Put B in for output from the male
thread side.
Male thread Female thread
CVR
R
L
B
A1 A2
H
Rc
032016

Order codes
CVR
Connecting thread size
Free flow direction
A── Inlet on male thread side
B── Inlet on release ring side
Dimensions in
●CVR
1/8 01
02
03
04
1/4
3/8
1/2
Thread size R, Rc
Metal
body
1/8,1/4
3/8,1/2
Brass (nickel plated)
Aluminum
Thread size MaterialName
Model R Rc A1 A2 B LNote 1
Width
across
flats
H
Effective
area
Cv
Mass
oz
CVR01□R1/8 Rc1/8 0.315 0.354 1.035 0.878 0.551 110.700 0.776
CVR02□R1/4 Rc1/4 0.433 0.433 1.299 1.063 0.669 267.525 1.305
CVR03□R3/8 Rc3/8 0.472 0.472 2.047 1.799 0.945 959.400 1.340
CVR04□R1/2 Rc1/2 0.591 0.591 2.441 2.118 1.063
1439.100 2.011
Note 1: The L dimensions for the tapered thread type are the reference dimensions after the fittings are
assembled.
2: Put A in the □for the model number for input from the male thread side. Put B in for output from the male
thread side.
Male thread Female thread
CVR
R
L
B
A1 A2
H
Rc
Shape and control direction
KCB2661Z
Free flow direction A
Connecting thread side
Free flow direction B
Male thread side
Free flow
CVS
Release
ring side
Free flow direction B
Connecting thread side
Release
ring side
Free flow
Free flow
CVR
Female thread side
Free flow direction A
Male thread side Female thread side
Free flow
KCB2661Z
Free flow direction A
Connecting thread side
Free flow direction B
Male thread side
Free flow
CVS
Release
ring side
Free flow direction B
Connecting thread side
Release
ring side
Free flow
Free flow
CVR
Female thread side
Free flow direction A
Male thread side Female thread side
Free flow
Model sample: CVR02A
Male thread
ー
Female thread
032016

The safety precautions for the check valves are shown below. Be sure to read the material in the front of the General Personal Catalog
regarding safety precautions other than those below.
Safety Precautions (Check Valve)
WARNING
●Sometimes the body produces heat when the switch operating frequency of the valve body is extreme. This can cause the risk of
burns due to heat. Contact us if the operating frequencies are extreme.
Handling Instructions and Precautions
Precautions for mounting the body
①Use the appropriate tool to tighten the hex nuts on the fitting.
②Refer to the following table of recommended tightening
torques when attaching the threaded parts. If you use more
than the recommended torque when tightening the threaded
parts, you may cause leaks by fracturing the threads or
deforming the gaskets. Also, if you use less than the
recommended torque when tightening the threaded parts, it
may result in looseness or leaks.
Precautions for disconnecting fittings
Tightening threaded parts
①Use the appropriate tool to remove the hex nuts from the
fitting.
②Remove the sealant from the threads on the other parts. If
the sealant is stuck to the other parts, it may get into
peripheral devices and cause a malfunction.
Metric thread
Tapered threads
for pipes
Thread type Thread size
1.5 to 1.9 N•m [13.277 to 16.817 in•lbf]
2 to 2.7 N•m [17.702 to 23.898 in•lbf]
7 to 9 N•m [61.957 to 79.659 in•lbf]
12 to 14 N•m [106.212 to 123.914 in•lbf]
22 to 24 N•m [194.722 to 212.424 in•lbf]
28 to 30 N•m [247.828 to 265.530 in•lbf]
M5×0.8
M6×1
R1/8
R1/4
R3/8
R1/2
Tightening torque
Recommended tightening torque
Precautions for attaching tubes
●Attaching and detaching tubes
①Confirm that the cut surface of the tube is cut straight across,
that the outer surface of the tube is not damaged, and that
the tube has not become oval shaped.
②When connecting tubes, if you do not insert the tube all the
way to the tube end, it may result in leaks.
③After installing the tube, pull on it to check that it does not
come off.
④
Do not meaninglessly press on the release ring before
attaching a tube. Doing so may cause the tube to become
detached.
Tube end
If removing pipes is difficult because the piping space is very
constricted, consult your nearest Koganei sales office for
specialized tools that are available.
Specialized tools for removing tubes
①Tightening threaded parts
Use a wrench on the hex nut to
tighten the threaded parts.
When tightening hex nuts
How to attach and detach tubes
①Attaching tubes
Check valves are equipped with
lock claws that hold tubes in place
when they have been pushed all
the way to the end, and with an
elastic sleeve for sealing the
periphery around the tubes.
②Removing tubes
When removing a tube, pressing
the release ring opens the lock
claw and the tube can be pulled
out.
Be sure to stop the air before
removing tubes.
d
d
c
Precautions for removing tubes
①Before removing tubing, be sure to confirm that the pressure
inside the tubing is zero.
②Uniformly press the release ring inwards as far as it goes
and then pull out the tubing. If you do not fully press in on
the release ring, the tube may not come out, or the tubing
may become scratched causing debris to be left inside the
fitting.
●Mounting
NOTE
Depending on the usage conditions, check valves may
produce a droning (vibrating) noise. Consult the nearest
Koganei sales office for countermeasures against the noise.
For φ3 [0.118], φ4 [0.157], and φ6 [0.236] tubes
Order codes: UJ-1
For φ6 [0.236], φ8 [0.315], φ10 [0.394], and φ12 [0.472] tubes
Order codes: UJ-2
032016

Handling Instructions and Precautions
●Usable tubes
Use of both nylon tubing and urethane tubing are supported.
Nylon tubing outside diameter precision should be within ±0.1
mm [±0.004 in] (nominal) for nylon tubing and within ±0.15
mm [±0.006 in] (nominal) for urethane tubing. Use tubing with
ovality (difference between major axis and minor axis) within 0.2
mm [0.008 in] (use of Koganei tubing is recommended).
Use of tubing that is not a Koganei genuine product or a
compatible (recommended) product may result in tube
disconnection, air leakage, or other problems. Be sure to check
on tubing before building a pneumatic system.
φ4 [0.157]
φ6 [0.236]
φ8 [0.315]
φ10 [0.394]
φ12 [0.472]
Tube size Minimum bending radius
Nylon tube Urethane tube
20 [0.787] 10 [0.394]
30 [1.181] 15 [0.591]
50 [1.969] 20 [0.787]
80 [3.150] 27 [1.063]
150 [5.9] 35 [1.378]
mm [in]
NOTE
1. Use tubing with an exterior that is not damaged. If tubing
becomes damaged after repeated use, cut off the
damaged portion.
2. Do not allow tubing to become severely bent or twisted
near the connection to a fitting. Such a condition creates
the risk of air leakage. The table below shows minimum
radius guidelines for nylon and urethane tubing.
3. Do not use extremely soft tubing, which causes a severe
drop in pull-out strength.
4. Before removing any tubes, always turn off the air supply.
Also, be sure to confirm that the air inside the pipes is
completely vented before starting.
032016