Description
SPECIFICATIONS
Body Type
Three-way cast globe valve
Nominal size
3/4’’, 1’’, 1-1/4’’, 1-1/2’’, 2’’, 2-1/2’’, 3’’, 4’’, 5’’, 6’’, 8’’, 10’’, 12’’, 14’’
Pressure rating
• ANSI Class 125, 150, 300, 600
• JIS 10K, 16K, 20K, 30K, 40K
• PN1.6, 4.0, 6.4, 10.0 Mpa
End connection
• Flanged End: FF, RF, RJ, LG
According to ANSI B16.5, JIS B2201, JB/T79.1, PN1.6MPa, JB/T79.2
• Welded End: SW, BW
Material
A216 WCB, A216WC6, A352 LCB, A351 CF8, A351CF8M, A351 CF3M, A351 CF3
Bonnet
• Plain bonnet (-17 to 230°C)
• Extension bonnet(-60 to -29 ℃ or over 230°C)
• Bellows Seal
Gland type
Bolted Gland
Packing
V-shaped PTFE, PTFE, Flexible graphite
Gasket material
Stainless steel(SUS304, SUS316, SUS316L), copper, aluminum
1. Connect Pipe 2. Double-screw Bolt 3. Hexagon Nut 4. Sealing 5. Gasket 6. Lower Bonnet 7. Body 8. Plug 9. Upper Seat 10. Stem 11. Bonnet 12. Packing Spring 13&14. Nuts&Bolts 15. Spring Plate 16&17. Studs&Nuts 18. Locknut 19. Stem Connector 20. Actuator
Trim
Valve plug
Three-way, V-port with linear characteristics
Actuator
Type
Single-acting diaphragm actuator, Spring type piston
actuator, Double acting piton actuator
Diaphragm material
Cloth embedded nylon and ethylene propylene rubber
Spring range
• 20 to 100 kPa(0.2 to 1.0 kgf/cm2)
• 40 to 200 kPa(0.4 to 2.0 kgf/cm2)
• 80 to 240 kPa(0.8 to 2.4 kgf/cm2)
Supply pressure
0.14, 0.25, 0.28, 0.4, 0.5 Mpa
Air connection
Rc1/4 or 1/4NPT internal thread
Ambient temperature
-30 to 70℃
Valve action
• FO: Air to close(Direct action actuator is combined.)
• FC: Air to open(Reverse action actuator is combined.)
Optional accessories
• P/P or I/P Positioner
• Air filter regulator
• Top-mounted or Side-mounted Handwheel
• Limit switch
• Solenoid valve
• Motion transmitter
• Booster relay
• Lock-up valve
• Airlock relay
• Others
Performance
Rated Kv value
Refer to table 1.
Flow characteristics (Refer to table 2)
• Linear
Leakage
• Metal Seat
According to IEC 60534-4:2006 Class IV, leakage less
than 0.01% of maximum valve capacity.
Inherent rangeability
• 30:1
Hysteresis error
• Without positioner: Within 3% F.S.
• With positioner: Within 1% F.S.
Linearity
Without positioner: Within ±5% F.S.
With positioner: Within ±1% F.S.
Description:
The plug structure of Three-way control valve is designed to flow to open. If valve plug in the valve seat that is mixing service control valve. There are two input ports and one outlet port(see Figure a, b). The valve plug is located on the outside of the valve seat that is diverting service control valve. There is one inlet port and two outlet ports (see Figure c,
d). Due to the three-way control valve have opening and closing operation at the same time, so three-way control valve doesn’t have air to open or air to close such type.
• For Direct Action Mixing Service, air failure means vertical pass(B → AB). But for Reverse Action Mixing Service, air failure means the flow is a horizontal pass (A → AB)
• For Direct Action Diverting Service, air failure means horizontal pass (AB → A). But for Reverse Action Diverting Service, air failure means the flow is a vertical pass(AB → B)
