The 30D12Y 30D12R pilot-operated (after valve) pressure control valve

FOB Price

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50 ~ 150 USD / Piece

1 Piece Minimum Order

Country:

China

Model No:

FOB Price:

50 ~ 150 USD / 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:

Supplying Ability:

Payment Type:

T/T, L/C, D/A, D/P

Product Group :

self-operated control valve

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Zhejiang Jinfeng Automatic Meter Co., Ltd.

China

Free Member

Contact Person ZOE

609ROOM,2#Yinghua International Plaza, Guangfu Road,Putuo District ,Shanghai China, Shanghai, Shanghai

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Product Description

Summary
The*0D*2Y/*0D*2R pilot-operated (after valve) pressure control valve is composed of the control valve，pilot and actuator .It is suitable for controling differential pressure in the pipes of non-crrosive liquids, gases and steams. when the diferential pressure rises, the control valve is closed .
The main features are as follows:

It has the pressure balancing function
Low noise, reliable performance, free of maintenance
The standard modular design is adopted.
High control precision

Body

DN		5、0、5、2、0、0、5、0、0、5、0、0、**0mm
PN		Class0、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 (DN5~5), balanced diaphragm (DN0~*0)

Actuator

Effective area (cm2)	**0
Pressure setting range	0.1~0.2 0.8~0.5 0.2~0.5 0.*5~1 0.6~2.0
Minimum differential pressure that ensures normal work of the pressure valve	DN5~5 0.8 DN0~0 0.1
Allowable maximum differential pressure between the upper and lower diaphragm chambers	0.4
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"

Note: ※The pressure setting range corresponding to the effective area does not apply to valves with DN******0.
Performance

Set value error		±4%
Allowable leakage (under stipulated testing conditions)	Hard seal	4×0.*1% valve rated capacity
	Soft seal	DN5~0	DN-DN5	DN0~0
		*0 bubbles/ min	*0 bubbles/min	*0 bubbles/min

Structural figure

1Body	2Seat	3Stem	4 Before-valve pressure P1 pipe	5 Balanced bellows	6 Travel indicator	7 Diaphragm	8 Spring
9 Operating pressure Ps pipe	*0 After-valve pressure P2 pip	*1 Pilot	*2 Pilot plug	*3Spring	*4 Bellows	*5 Adjusting screw	*6 Adjustable needle valve

Allowable working temperature

DN		5~*5mm	0~0mm
seal type	Hard seal	≤**0℃	≤**0℃
		Cooling tank≤**0℃	Cooling tank and extension ≤**0℃
		Cooling tan k and heat sink ≤**0℃※	Cooling tank and extension ≤**0℃※
	Soft seal	≤**0℃

Note: ※It indicates the allowable working temperature is valid only when the medium is steam
Rated flow coefficient, noise measuring coefficient, allowable differential pressure

**0

**5

**0

Rated flow coefficient

6.3

**5

**0

Noise measuring coefficient Z value

0.6

0.*5

0.5

0.*5

0.4

0.*5

0.3

0.2

Allowable differential

PN*6

1.6

1.5

1.2

pressure (Mpa)

PN*0

Working principle
After throttling by the plug and seat, the before-valve pressure P1 of the process medium is changed into the after-valve pressure P2. Through the control pipeline, P1 is to the upper diaphragm chamber of the actuator and acts on the top disc. The acting force produced balances the reacting force of the spring, determining relative positions of the plug and seat and controlling the before-valve pressure. W hen the before-valve pressure P1 increases, the acting force of P1 that acts on the top disc will increase accordingly. At the time, the acting force on the top disc is higher than the reacting force of the spring to make the plug move away from the seat, until the acting force on the top disc balances the reacting force of the spring. At the time, the flow area between the plug and seat is increased, the flow resistance becomes lower and P1 is reduced to the set value. Likewise, when the before-valve pressure P1 decreases, the acting direction is reverse to the above. This is the working principle during the control of before-valve pressure. When it is necessary to change the set value of before-valve pressure P1, please adjust the adjusting nut.

I. Dimensions and weight of control valve

DN (mm)

**0

**5

**0

L (mm)

**0

B (mm)

**2

**8

**0

**5

**0

**6

**4

Weight (Kg)

6.2

6.7

9.7

**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