The 30L01Y/R self-operated flow control valve

Product Description

Summary
The *0L*1Y *0L*1R self-operated flow control valve is composed of the control valve provided with flow setting and actuator.
The main features are as follows:                                                                                               
1.It has the pressure balancing function with high sensitivity.                                                                                                                                                                                                                                                                                                                  
2.Low noise, reliable performance ,free of maintenance                                                                                                     
3.The standard modular design is  adopted.
4.The flow is adjusted according to the                                                                                                       
standard figure by the throttle valve,  which is convenient and fast.                                                                                                                                                                                                            
5.Various combined controls can be  carried out through the assemblies.
Body

DN		*5、*0、*5、*2、*0、*0、*5、*0、**0、**5、**0、**0、**0mm
PN		Class**0、**0
Flange standard		ANSI、JIS、DIN GB JB(special standards can be offered according to user requirements)
Body material		WCB、CF8、CF3、CF8M、CF3M
Plug material	Hard seal	Stainless steel (**4、**6、**6L)
	Soft seal	Stainless steel embedded with rubber ring
Pressure balancing		Stainless steel bellows (DN*5~**5), balanced diaphragm (DN**0~**0)

Actuator

Effective area (cm2)	**0	**0
Differential pressure of throttle	0.*2   0.*5
Allowable maximum differential pressure between  the upper and lower diaphragm chambers	0.4	0.*5
Material	galvanized steel sheet; diaphragm EPDM or FKM with fiber
Control pipeline connection	Copper pipe o r steel pipe Φ*0X 1(mm) ferrule connect ion: R1/4"

Performance

Set value error		±8%
Allowable leakage (under stipulated testing conditions)	Hard seal	4×0.*1% valve rated capacity
	Soft seal	DN*5~*0	DN**-DN**5	DN**0~**0
		*0 bubbles/ min	*0 bubbles/min	*0 bubbles/min

Structural figure

1 Flow restrictor	2 Body	3 Seat	4 Valve shaft	5 Bonnet
6 Bellows	7 Diaphragm Cover	8 Diaphragm	9 Charging valve

Allowable working temperature

DN		*5~**5mm	**0~**0mm
seal type	Hard seal	≤**0℃	≤**0℃
		Two Cooling tank≤**0℃	Two Cooling tank and extension ≤**0℃
	Soft seal	≤**0℃

Note: The differential pressure of throttle in the flow valve includes two types such as 0.*2MPa and 0.*5MPa, which shall be selected according to the actual situations. The differential pressure before and after the valve shall be higher than that of the throttle.
Rated flow coefficient, noise measuring coefficient, allowable differential pressure

DN

*5

*0

*5

*2

*0

*0

*5

*0

**0

**5

**0

**0

**0

Rated flow coefficient

4

6.3

8

*6

*0

*2

*0

*0

**5

**0

**0

**0

**0

Throttle pressure differential                Flow range(m /h)

0.*2MPa

0.**2

0.**3

0.**4

0.**7

0.***1

0.***6

*- *8

*- *0

*- *3

*- *0

*****5

*****0

*****0

0.*5MPa

0.**3

0.**4.5

0.**6

0.***0

0.***6

1.***4

4 - *0

***8

*- *0

*****0

*****0

*****0

*****0

Noise measuring coefficient Z value

0.6

0.6

0.6

0.*5

0.*5

0.5

0.5

0.*5

0.4

0.*5

0.3

0.2

0.2

Allowable differential

PN*6

1.6

1.5

1.2

1

pressure (Mpa)

PN*0

2

Note: The differential pressure of throttle in the flow valve includes two types such as 0.*2MPa and 0.*5MPa, which shall be selected according to the actual situations. The differentia l pressure before and after the valve shall be higher than that of the throttle.
Working principle
After the controlled medium enters the valve, the before-valve pressure P1 is into the lower diaphragm chamber through the control pipeline, and the pressure Ps after throttling by the throttle valve is into the upper diaphragm mchamber. The difference between P1 and Ps △Ps=P*-Ps is called effective pressure. The difference between the thrust producedon the diaphragm by P1 and the thrust produced on the diaphragm by Ps determines relative positions of the plug and seat and determines the flow that passes through the valve. When the flow that passes through the valve increases, i.e. △Ps increases, P1 and Ps respectively acts on the lower diaphragm chamber and upper diaphragm chamber to make the plug move towards the seat,
so that the flow area between the plug and seat is changed and Ps is increased . The thrustacted on the diaphragm by the increased Ps, the reacting force of the spring and the thrust acted on the diaphragm by P1reaches balance at the new position to realize the purpose of controlling f low, and vice versa. The flow of the controlled medium is determined through adjusting relative positions of the throttle valve and seat.     

Calibration chart: To set the flow more accurately and quickly, the following calibration charts are offered for you reference (please measure the flow with a flow meter if you need to set the flow more precisely or set the flow
for valves with DN******0).
The calibration chart is only applicable to water, and serves as a reference for other media, whose flow shall be properly adjusted in the actual process..

I. Dimensions and weight of control valve

DN (mm)

*5

*0

*5

*2

*0

*0

Country:	China
Model No:	-
FOB Price:	50 ~ 150 / Piece (Negotiable) Get Latest Price
Place of Origin:	-
Price for Minimum Order:	50 per Piece
Minimum Order Quantity:	1 Piece
Packaging Detail:	wooden case
Delivery Time:	15
Supplying Ability:	-
Payment Type:	T/T, L/C, D/A, D/P
Product Group :	self-operated control valve