YG43Y High sensitivity steam pressure reducing valveDetailed product description：

Structural characteristics and uses

YG43Y high-sensitivity steam pressure reducing valve belongs to the pilot piston pressure reducing valve. It consists of two parts: the main valve and the pilot valve. The main valve is mainly composed of valve seat, main valve disc, piston, spring and other parts. The pilot valve is mainly composed of valve seat, valve disc, diaphragm, spring, regulating spring and other parts. By adjusting the spring pressure to set the outlet pressure, using a diaphragm to sense changes in outlet pressure, and driving the piston to adjust the size of the overcurrent area at the throttle position of the main valve through the opening and closing of the pilot valve, the pressure reduction and stabilization function is achieved.
This series of products has made the following improvements on the basis of ordinary pressure reducing valves: increasing the piston area, changing the throttling structure, changing the sealing form, improving the guide valve structure and adjusting spring form, thereby improving the performance of the product from the following aspects.

1. Improved the sensing efficiency of outlet pressure changes, increased sensitivity, and greatly reduced pressure deviation caused by upstream pressure changes, flow rate changes, and other factors.
2. Improved streamline distribution and reduced noise.
3. Improved the sealing surface structure and extended the lifespan of the sealing surface.
This product is mainly used for steam pipelines, suitable for steam pipelines with large changes in inlet pressure and flow rate.

Main technical parameters and performance indicators

Nominal pressure (Mpa)	one	one point six
Shell test pressure (Mpa)*	one point five	two point four
Sealing test pressure (Mpa)	one	one point six
Maximum import pressure (Mpa)	one	one point six
Export pressure range (Mpa)	0.04-0.6	0.04-1.0
Pressure characteristic deviation (Mpa) △ Pp2P	GB12246-1989
Flow characteristic deviation (Mpa) P2G	GB12246-1989
Minimum pressure difference (Mpa)	zero point zero five	zero point zero seven
leakage volume	GB12245-1989

*Shell test does not include diaphragm and top cover

YG43Y High Sensitivity Steam Pressure Reducing Valve Main Component Materials

Part Name	Part material
Valve body, valve cover, bottom cover	WCB
Valve seat disc	2Cr13
Cylinder liner piston	Aluminum iron bronze
Diaphragm	PH15-7Mo
piston ring	Para polystyrene
Guide valve seat and guide valve disc	2Cr13
Main valve spring	50CrVA
Adjusting the main spring	50CrVA
Adjusting spring	60Si2Mn

Flow coefficient (Cv)

DN	fifteen	twenty	twenty-five	thirty-two	forty	fifty	sixty-five	eighty
Cv	one	two point five	four	six point five	nine	sixteen	twenty-five	thirty-six

YG43H/Y series connection size

Nominal Diameter DN

External dimensions

Connection size

L

H

H1

PN 1.0MPa

PN 1.6MPa

D

K

n-ф

d

C

D

K

n-ф

d

C

fifteen

one hundred and forty

one hundred and sixty

sixty-five

ninety-five

sixty-five

four hundred and fourteen

forty-five

twelve

ninety-five

sixty-five

four hundred and fourteen

forty-five

fourteen

twenty

one hundred and forty

one hundred and sixty

sixty-five

one hundred and five

seventy-five

four hundred and fourteen

fifty-five

fourteen

one hundred and five

seventy-five

four hundred and fourteen

fifty-five

fourteen

twenty-five

one hundred and fifty

one hundred and sixty-eight

sixty-eight

one hundred and fifteen

eighty-five

four hundred and fourteen

sixty-five

fourteen

one hundred and fifteen

eighty-five

four hundred and fourteen

sixty-five

fourteen

thirty-two

one hundred and eighty

one hundred and eighty-five

seventy-five

one hundred and thirty-five

one hundred

four hundred and eighteen

seventy-eight

sixteen

one hundred and thirty-five

one hundred

four hundred and eighteen

seventy-eight

sixteen

forty

one hundred and eighty

one hundred and eighty-five

seventy-eight

one hundred and forty-five

one hundred and ten

four hundred and eighteen

eighty-five

sixteen

one hundred and forty-five

one hundred and ten

four hundred and eighteen

eighty-five

sixteen

fifty

two hundred

one hundred and ninety-three

eighty-eight

one hundred and sixty

one hundred and twenty-five

four hundred and eighteen

one hundred

sixteen

one hundred and sixty

one hundred and twenty-five

four hundred and eighteen

one hundred

sixteen

sixty-five

two hundred and thirty

two hundred and eight

ninety-eight

one hundred and eighty

one hundred and forty-five

four hundred and eighteen

one hundred and twenty

eighteen

one hundred and eighty

one hundred and forty-five

four hundred and eighteen

one hundred and twenty

eighteen

eighty

two hundred and sixty

two hundred and twenty-eight

one hundred and seventeen

one hundred and ninety-five

one hundred and sixty

four hundred and eighteen

one hundred and thirty-five

eighteen

one hundred and ninety-five

one hundred and sixty

eight hundred and eighteen

one hundred and thirty-five

twenty