AB-6526
6
z
Valve
Item
Specification
Type of valve
Two-way valve, flanged-end connection
Rated pressure
JIS 10K (max. operating pressure 1.0 MPa)
Valve size,
Cv,
Closed-off rating
Model Number
Valve size
Cv
Closed-off rating
Chilled/hot water,
high temperature
water
Steam*
VY51_ _K00
11
DN15 (1/2”)
1.0
1.0 MPa
12
DN15 (1/2”)
2.5
13
DN15 (1/2”)
6.0
14
DN15 (1/2”)
1.6
15
DN15 (1/2”)
4.0
21
DN25 (1”)
10
22
DN25 (1”)
16
41
DN40 (1½”)
25
42
DN40 (1½”)
40
51
DN50 (2”)
65
—
0.3 Mpa
61
DN65 (2½”)
95
—
0.1 Mpa
81
DN80 (3”)
125
0.7 MPa
1.0 MPa
0.4 MPa
0.7 MPa
VY51_ _H00
61
DN65 (2½”)
95
0.7 MPa
1.0 MPa
81
DN80 (3”)
125
0.4 MPa
0.7 MPa
End connection
Flanged-end connection (JIS 10K)
Flat face flange (FF) : body cast iron (FC200)
Raised face flange (RF) : body stainless steel (SCS13A)
Applicable fluid
Chilled/hot water, high temperature water, steam, brine (glycol concentration: 50 % or less)
Temperature of fluid
0–175 °C
Flow characteristics
Equal percentage characteristic
Rangeability
100:1
Leakage from valve
seat
0.01 % of the rated Cv (max. 0.0006 of Cv for DN15)
Major materials
Body
Cast iron (FC200)
Stainless steel (SCS13A)
Plug, stem
Stainless steel (equivalent to SCS)
Seat ring
Heat-resistant PTFE
Gland packing
Inorganic fiber packing
Gasket
Expanded graphite sheet
Color
Body of FC200: gray (equivalent to M5B 4/1)
Body of SCS13A: none
Attaching actuator
Integrated with the valve
*
Indicates the limit of temperature in which the actuator can operate.
When the fluid is steam, the max. fluid temperature for the valve is 175 °C, so it is 0.8 MPa or less.
