Three Ways Control Valves

Three Ways Control Valves

The valve model HMT is a three-way control valve for mixing service.
The actuator employed is of a multi-spring type and has a small-sized, high-output diaphragm motor with an extremely simplified operating mechanism. It is used for the heat control of heat converters, etc. The valve model HDT is a three-way control valve for diverting service. It has a small-sized, high output diaphragm motor which is suitable for big port and high differential pressure services.

Additional information

Size:

3/4'' ~ 14''

ANSI Class:

150 ~ 600LB

Body Materials:

Carbon Steel, Stainless Steel

Temperature Range:

-196 ~ +450°C

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

hmt hdt series
Three-ways Mixing Type Control Valves

 

hdt series
Three-ways Diverting Type Control Valves

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.

the principle of action 3 way control valves direct action diverting type
the principle of action 3-way control valves direct action diverting type

 

the principle of action 3 way control valves direct action mixing type
the principle of action 3-way control valves direct action mixing type

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)

Additional information

Size:

3/4'' ~ 14''

ANSI Class:

150 ~ 600LB

Body Materials:

Carbon Steel, Stainless Steel

Temperature Range:

-196 ~ +450°C

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