Electric three-way control valve

Electric three-way regulating valve consists of a straight-travel electric actuator and a three-way valve body. With built-in servo unit for receiving the signal of 4-20mA or 1-5VDC, and transform the current signal into corresponding straight travel displacement, automatically modify the opening of the valve to continuously control the pressure, flow rate, temperature and liquid level in the pipeline, Temperature, level and other process parameters of continuous adjustment.

Enquiry

Valve body structure

1-Body,   2- Gasket,   3-Seat,   4-Valve plug   5- Gasket,   6-Bonnet,   7- Packing
8- Packing bushing,   9- Gland,   10-Stem,   11-Hex nut,  12-Stud
13- Hex nut,   14-Stud

Main technical data

Body

Type

Conveging three-way / divider three-way casting globe type, double seat

Size (DN)

25 ~ 300 mm

Pressure rating

PN16 ~ PN100  / CL150LB, CL300LB, CL600LB

Flange standard

JB/T79.1-94、79.2-94、ANSI B16.5

Body material

WCB,CF8,CF8M

Bonnet structure

option

Standard type: (-5 ~ 230 ℃), Heat dissipation type:(-45 ~ 230 ℃),

Low temperature type:(-196 ~ -45 ℃),Bellow sealed type

Bonnet type

Bolted

Packing

V-type PTFE / flexible graphite

Trim structure

Single-seat / plunger disc

Trim material

Seat & Plug: SS304/SS316 surfacing welding Stellite, 

Shaft: SS304/SS316

Flow characteristic

Equal percentage / Linear

 

Performance

Flow characteristic

Linear,  percentage

Allowable range

30:1

Rated Cv value

Percentage / Linear CV8.5 ~ 1280

Leakage grade

Metal seal: IV grade ( 0.01% rated capacity )

Allowable tolerance

±1.0 %

Return difference

≤1.0 %

Dead Zone

≤1.0 %

Difference from beginning to end point

±2.5 %

Rated travel difference

≤2.5 %

 

Actuator

Type

Electric actuator, intelligent integrated

Usage

regulating

Power supply

220VAC ±10 % 50Hz, 380VAC ±10 % 50Hz,

Input signal

4-20mA.DC

Action to close

Input signal increase, valve stem descend, valve close

Action to open

Input signal increase, valve stem ascend, valve open

Lag

≤0.8 %FS

Linear type

≤1 %FS

Environmental temperature

Standard type: -10℃~+60℃

With space heater: -35℃~+60℃

Explosive proof: -10℃~+40℃