Delivery Time:7-15 working days after received your payment
Certification:CE,TRCU,ISO9001

Pneumatic diaphragm intelligent pressure-balanced single-seat control valve

YSIQ(D)20 Series of Intelligent pressure-balanced single-seat control valve uses modular design and impact structure. With balance hole core plus imported seal ring, which realize special double sealing, make it applicable for high pressure conditions to meet customers operation requirements. Double-sides valve seat and compressing connection of the valve body, greatly enhance the sealing grade and service life of the valve, make it easy to repair and greatly increase the general performance of the regulating valve.

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 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	Pressure Balanced Single-Seat
Nominal Diameter	DN40～DN400(1-1/2”～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℃   Stainless Steel:-40～250℃
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	±2.5
2	Hysteresis＜(%)	1	2.5
3	Dead Band＜(%)