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Certification:CE,TRCU,ISO9001

Soft Sealing Automatic Control Valve for Steam / Water High Pressure Difference

Pneumatic Diaphragm Intelligent Low-noise Cooling Fin Single-seat Control Valve

General:

YSIQ(D)12G Series of Intelligent Single-Seat Control Valve use modular design, with advantages of impact structure and wide varieties. The varieties combination of the trim components, make it applicable for high pressure difference, high precision and low noise conditions to meet the different usage for customers’ requirements. The modular design, double-sides valve seat and compressing tightly connection, all greatly enhance valve sealing grade and its service life, which make it easy to repair and greatly increase its general performance.

Working principle:

    The equipped smart positioner will convert to valve required settings when receive normal signal of electricity or signal of computer. Then the pneumatic actuator linear displacement will change to angular displacement by valve special connections, and tested by position transducer then feedback to microprocessor.

    The microprocessor will compare the actual valve feedback with original settings and tested if there is any deviation. It will output pulse width modulation command(PWM) to piezoelectric valve according to the the size and direction of deviation. The piezoelectric valve will regulate the input or exhaust gas under the control command.

Main Parts Materials                                                                  Table 1

Item	Part Name	Material
1	Body	WCB	WC6	CF8	CF8M
2	Seat	304,316/Partial Stellite	316/Partial Stellite
3	Plug	Metal Sealing	304,316/Partial Stellite	316/Partial Stellite
Soft Sealing	304,316+Reinforced Teflon	316+Reinforced Teflon
4	Cage	304,316	316
5	Guide Sleeve	304,316	316
6	Stem	304,316	316
7	Bonnet	WCB	WC6	CF8	CF8M

*Above is the common materials, the specific grades take the contract as a standard.

Specification &Technical Parameter                                                  Table 2                          

Type	Top Guide(Double Guide)Single Seat
Nominal Diameter	DN15～DN400(1/2”～16”)
Nominal Pressure	PN16,25,40,64,100(150lb,300lb,600lb)
Flow Characteristic	Equal Percentage, Linear, Quick Open(For Shut-Off Valve)
Rangeability	50:1
Bonnet Form	Standard Type:Cast Steel :-20～250℃   Cast Stainless Steel:-40～250℃
Fin-Extension Type:Cast Steel:-29～425℃   Cast Stainless Steel:-40～450℃
Low-Temp. Type:Cast Stainless Steel:-60～-100℃,-100～-200℃,-200～-250℃
Seat Leakage	ANSI Ⅳ,V,Ⅵ(Soft Sealing)

Main Performance Index                                                             Table 3

No.	Item	Standard Type	Fin-Extension Type, Low-Temp. Type
1	Basic Error＜(%)	±1