30D02Y/R self-operated (before-valve) pressure control valve

Precio FOB

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50 ~ 150 USD / Piece

1 Minimum Order

País:

China

N º de Modelo:

Precio FOB:

50 ~ 150 USD / Piece (Negociable) Obtener el precio más reciente

Lugar de origen:

Precio de pedido mínimo:

50 per Piece

Cantidad de pedido mínimo:

Detalle de embalaje:

wooden case

El tiempo de entrega:

Capacidad de suministro:

Tipo de pago:

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

Grupo de productos :

self-operated control valve

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Zhejiang Jinfeng Automatic Meter Co., Ltd.

China

1st Año

Persona de contacto ZOE

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

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Descripción del producto

Summary
The *0D*2Y *0D*2R self-operated (before-valve) pressure control valve is composed of the control valve, actuator and a spring used for pressure setting. It is suitable for controlling before- valve pressure in the pipes of non- corrosive liquids, gases and steams.When the before-valve pressure rises, the control valve is opened. Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â
The main features are as follows:
1.It has the pressure balancing function with high sensitiity.
2.Low noise ,reliable performance, free
of maintenance
3.The standard modular design is adopted.
4.Various combined controls can be carried out through the assemblies.
Technical parameters and performances
Body

DN		5ã€0ã€5ã€2ã€0ã€0ã€5ã€0ã€0ã€5ã€0ã€0ã€**0mm
PN		Class0ã€0
Flange standard		ANSIã€JISã€DIN GB JB(special standards can be offered according to user requirements)
Body material		WCBã€CF8ã€CF3ã€CF8Mã€CF3M
Plug material	Hard seal	Stainless steel (4ã€6ã€**6L)
	Soft seal	Stainless steel embedded with rubber ring
Pressure balancing		Stainless steel bellows (DN5~5), balanced diaphragm (DN0~*0)

Actuator

Effective area (cm2)	*2 â€»	*0	**0	**0
Pressure setting range	1.0~1.6 0.3~1.1	0.1~0.5 0.5~0.5	0.*5~0.2 0.1~0.6	0.5~0.5
Minimum differential pressure that ensures normal work of the pressure valve	â‰¥0.*5	â‰¥0.*4	â‰¥0.*1	â‰¥0.**5
Allowable maximum differential pressure between the upper a nd lower diaphragm chambers	2.0	1.*5	0.4	0.*5
Material	Diaphragm cover: galvanized steel sheet; Diaphragm: EPDM or FKM with fiber
Control pipeline connection	Copper pipe or steel pipe Î¦*0X 1(mm); Ferrule connection: R1/4"

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

Set value error		Â±8%
Allowable leakage (under stipulated testing conditions)Â	Hard seal	4Ã—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	3 Valve shaft	4 Bonnet	5 Diaphragm	6 Diaphragm
7 Spring	8 Adjusting nut	9 Pressure pipe	*0 Bellows	*1 Balanced diaphragm	*2 Charging valve

Allowable working temperature

DN		5~*5mm	0~0mm
seal type	Â Hard seal	â‰¤**0â„ƒÂ Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â	â‰¤**0â„ƒ
		Cooling tankâ‰¤**0â„ƒ	Cooling tank and extension â‰¤**0â„ƒ
		Cooling tan k and heat sink â‰¤**0â„ƒâ€»Â Â Â Â Â Â Â Â Â Â Â Â	Cooling tank and extension â‰¤**0â„ƒâ€»
	Soft seal	â‰¤**0â„ƒ

Note: â€»It indicates the allowable working temperature is valid only when the medium is steam
and the body with PN*0 shall be adopted w hen the temperature resistance is **0â„ƒ.
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. Â Â Â Â

I. Dimensions and weight of control valve

DN (mm)

**0

**5

**0

LÂ (mm)

**0

BÂ (mm)

**2

**8

**0

**5

**0

País:	China
N º de Modelo:	-
Precio FOB:	50 ~ 150 / Piece (Negociable) Obtener el precio más reciente
Lugar de origen:	-
Precio de pedido mínimo:	50 per Piece
Cantidad de pedido mínimo:	1
Detalle de embalaje:	wooden case
El tiempo de entrega:	15
Capacidad de suministro:	-
Tipo de pago:	T/T, L/C, D/A, D/P
Grupo de productos :	self-operated control valve