AB-6209-U
3
IMPORTANT:
In case an Azbil Corporation product fails, you are required to provide your Equipment with safety design such
as fool-proof design*
1
, and fail-safe design*
2
(anti-flame propagation design, etc.), whereby preventing any
occurrence of physical injuries, fires, significant damage, and so forth. Furthermore, fault avoidance*
3
, fault
tolerance*
4
, or the like should be incorporated so that the said Equipment can satisfy the level of reliability and
safety required for your use.
*1. A design that is safe even if the user makes an error.
*2. A design that is safe even if the device fails.
*3. Avoidance of device failure by using highly reliable components, etc.
*4. The use of redundancy.
Specifications
Item Specification
Type
Three-way ball valve with threaded-end connection (internal), proportional control
Applicable actuator
Model MY53X0A
Pressure rating
Max. working pressure: 230 psig
Valve size, Cv, Close-off rating
Model number
Nominal size
Cv Close-off
rating
Inch DN
VY5303B0021
3/4” 20
4.0 72
psig
VY5303B0022
3/4” 20
6.3
72 psig
VY5303B0023
1” 25
10
72 psig
VY5303B0031
1
1
/
4
” 32
16
43 psig
VY5303B 041
1
1
/
2
” 40
25
43 psig
Mounting orientation
Horizontal or vertical mounting
Materials
①
Body
Cast
bronze*
②
Cap
Cast
bronze*
③
Seat
ring PTFE
④
Ball
Cast stainless steel
⑤
Stem
Stainless
steel
⑥
O-ring
EPDM
End connection
Internal threaded-end (ASME B1.20.1)
Applicable fluid
Chilled/hot water, ethylene glycol solutions, 50 wt.% max.
Allowable fluid temperature
32
F to 212
F (0
C to 100
C), non-freezing
Flow characteristics
Linear characteristic
Rangeability
30 : 1
Seat leakage in fully closed position
0.01 % of rated Cv value (0.0006 Cv or less for Model VY5303B0021)
Mounting position
On vertical / horizontal pipe
Weight
Actuator to combine is excluded.
VY5303B0021
1.5 lb (0.7 kg)
VY5303B0022
1.5 lb (0.7 kg)
VY5303B0023
2.0 lb (0.9 kg)
VY5303B0031
3.1 lb (1.4 kg)
VY5303B 041
3.7 lb (1.7 kg)
*
JIS CAC406 (JIS: Japanese Industrial Standards)
Parts
Identification
Flow
Characteristic
Figure 3. Flow characteristic diagram
⑤
②
③
③
④
①
⑥
100
75
50
25
0
25 50 75 100
B
AB
A
AB
Cv (%)
Position (%)
Figure 2. Parts identification
