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| TECHNICAL
DATA |
|
Series
|
CV
|
|
End
Connection Size
|
1/8",1/4"6mm
|
3/8",1/2",5/8"
10mm,12mm
|
3/4"
& 1"
|
|
Nominal
Cracking Pressure
|
A1/3,1,10
& 25psig (0.02,0.06,0.7 &
1.76kg/§²)
|
|
Maximum
Working
Pressure
@
70¢µ(21¡É)
|
3000
psig (211 kg/§²)
|
Brass:1500psig
(105.48
kg/§²)
316ss:2000psig
(140.64
kg/§²)
|
|
Maximum
Back
Pressure
@
70¢µ(21¡É)
|
1000
psig(70.32 kg/§²)for craking
pressures less than 10 psig (0.7 kg/§²)
3000 psig (211 kg/§²) for all other
cracking pressures
|
200
psig (14.06 kg/§²)
|
200
psig (14.06 kg/§²)
|
|
Flow
Coefficient(Cv) (see Flow
Curves)
|
1/8"T
- 0.10
1/4"T
- 0.47
|
3/8"T
- 1.47
1/2"T
&
5/8"T
- 1.68
|
3/4"T
& 1"T - 4.48
|
|
Temperature
Rating
|
Viton
: -10¢µ to 375¢µ(-23¡É to 191¡É)
Buna
N : -10¢µ to 250¢µ(-23¡É to 121¡É)
|
|
|
Features
Every
valve is factory tested for cracking and
reseal performance.
CLEANING
Each
valve is cleaned and packaged according to the
company standard cleaning procedures.
TESTING
Each
valve is tested with air for cracking and
reseal performance.
Hydrostatic
shell test is performed at
1.5 times the working pressure.
|
|
|
Valve
Body Materials
|
|
316SS
|
Brass
|
Alloy
400 (1/4"to1/2"T Only)
|
|
Grade/ATSM
Specification
|
|
1.
Inlet Body
|
316SS/A276
|
Brass
360/B16
|
Alloy
400/B164
|
|
2.
O-Ring
|
Viton
|
Buna
N
|
Viton
|
|
3.
Poppet
|
316SS/A276
|
Brass
360/B16
|
Alloy
400/B164
|
|
4.
Spring
|
302SS/A313
|
Alloy
400/B164
|
|
5.
outlet Body
|
316SS/A276
|
Brass
360/B16
|
Alloy
400/B164
|
|
| |
|
CRACKING
PRESSRUE & RESEAL PRESSURE
CV
Series Valves with nominal cracking pressure
of 8 psig (0.55 kg/§²) or lower may require
back pressure to reseal bubble - tight.
|
| |
|
Actual
pressure, kg/§² @21¡É
|
|
|
|
Example
: For a valve with a spring having a nominal
cracking pressure of 25 psig, the actual
cracking pressure ranges between 20 and 28
psig. The minimum reseal pressure is 16 psig.
Valves
which are not actuated for a period of time
may initially crack at higher than subsequent
cracking pressures.
Cracking
pressure - The upstream pressure at which the
first indication of flow occurs.
Reseal
Pressure - The upstream pressure at which the
valve closes bubble - tight.
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