FIG681 Electric bellows 3 way control valve - Shaoguan Boilz Control Valve Manufacture Co.,Ltd

FIG681 Electric bellows 3 way control valve: *All electronic electric actuators, adopting the structure
*powerful function, reliable performance, simple connection, high controlling accuracy
*Designed for frequent switch, control requirement of working conditions and design
* beautiful appearance, seal tightly don't leak, long service life

Technical parameter
Installation dimensions
Model description
Working Principle

Body
Bore	DN15~DN500mm
Nominal pressure	PN16~PN420,5K~63K,150LB~2500LB
Applicable temperature	-196℃~+650℃
Applicable medium	gas,water,oil,steam etc
Connection	flange,SW
Bonnet type	Normal type ,High temperature type, Bellows type , Low temperature type
Stuffing	PTFE,Flexible graphite
Seat	PTFE
Body material	WCB,WC6,WC9,CF8,CF8M,CF3M etc
Trim
Flow Characteristic	quick-open, equal percentage, Linear
Actuator
Type	Single spring diaphragm cylinder,multi-spring diaphragm cylinder,piston type/Double-acting cylinder,electric.

Model		Introduction
FIG681
Valve type	TYP300	CV3000 type
	TYP900	forged steel sleeve type steam trap valve
	TYP910	forged steel labyrinth control valve
	TYP920	forged steel cascade throttle control valve
	FIG580	2 ways control valve
	FIG680	3 ways control valve
	FIG681	3 ways bellows sealing control valve
	JX480	slide valve
Actuator	A	single spring diaphragm type
	B	multi-spring diaphragm type
	C	single action piston
	C1	double action piston
	D	electric
	F	electric-hydraulic

	E	manual
	G	pneumatic-hydraulic
	H	other
Open/Close type	1	air to open type
	2	air to close type
	3	electricity to open
	4	electricity to close
Action type	A	direct action
Action type	B	reaction
Handwheel	1	without handwheel
	2	top mount the handwheel
	3	Side mount the handwheel
Connection	F	flange
	H1	butt welding
	H	socket
	S	internal thread
	S1	external thread
	J	wafer type
	K	other
Valve trim structure	1	shut-off valve
	2	sleeve single seat valve
	3	sleeve double seat valve
	4	porous type noise reduction cage
	5	labyrinth cage
	6	multistage depressurization type cage
	7	other
Valve core structure	A	balanced internal parts
Valve core structure	B	unbalanced internal parts
Valve bonnet type	1	standard type
	2	cooling fin type
	3	lengthen type
	4	bellow type
	5	clamp cover type
	6	other
Flow characteristic	1	quick opening
	2	linear
	3	equal percent
	4	fixed percentage
Valve seat material	1	RPTFE
	2	alloy steel
	3	cemented carbide
	4	tungsten steel
	5	other
Norminal diameter	DN	DN15-DN500
Norminal pressure	PN	PN10-PN760
	LB	150LB-2500LB
	K	5K-60K
Material type	1	WCB
	2	WC6
	3	WC9
	4	CF8
	5	CF3
	6	CF8M
	7	CF3M
	8	A105
	9	F91
	10	F22
	11	other
Illustraton
1、TYP300-B-1-A-2-F-2-A-1-3-1-DN50-PN25-CF8
1.CV3000 series，Multi-spring diaphragm cylinder,air to open type,direct action,top mount the handwheel,sleeve single seat valve,balanced internal parts ,standard valve bonnet,equal percent type,RPTFE valve seat,norminal diameter DN50,norminal pressure PN25,CF8 material.

      Electric control valve is an important execution unit industrial in automation controlling process. As higher and higher degree of industrial automation, it’s being used more and more in the field of all kinds of industrial production. Compared with traditional pneumatic control valve, it has obvious advantages: energy-saving (only consume electricity when at work), environmental (no carbon emissions), convenient installation (no need for complicated pneumatic pipe and pump stations). According to its functions and features valve are divided into linear features, percentage and parabolic characteristics.

Working principle

Power supply：DC24V,AC220V,AC380V

Input control signal ：DC4-20MA，DC1-5V

Feedback control signal：DC4-20MA（load (electric) hinder below 500Ω）

        Automatic regulating function is realized by receiving signals (such as: 4 ~ 20 ma) from industrial automation control system to drive valve ,changing the cross-sectional area of the pipeline between valve core and valve seat ,controlling the flow rate, temperature, pressure and etc of pipeline medium.

       New type electric control valve’s actuator has servo function, 4-20 ma, accepts unified 4-20mA or 1-5 v DC standard signal, converts current signal to corresponding linear displacement, automatically controls valve opening, achieving continuous adjustment to the fluid’s pressure, flow, temperature, liquid level and other process parameters inside the pipeline.

Electrical principle

       Action principle: motor power 220 VAC or 380 VAC, control signal 4 ~ 20 mA, valve has controller inside, the controller converts current signal to the angular travel signal of the stepper motor, motor rotation, the straight travel or angular travel is realized by gears, levers, or gear lever driving the stem .

      Feedback: motor operates through the gear running, slide rheostat outputs valve’s position signal by three joints, there are also three lines limit signals (full open and full closed. public line)