Y13H Pilot piston steam pressure reducing valveDetailed product description：

Y13H pressure reducing valve is mainly used in steam pipelines to reduce pressure and stabilize pressure. Y13H 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, cylinder liner, 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 and setting the outlet pressure, the diaphragm is used to sense the change in outlet pressure. The opening and closing of the pilot valve drives the piston to adjust the size of the overcurrent area at the throttle position of the main valve, achieving the function of pressure reduction and stabilization.

Main technical parameters and performance indicators of Y13H pilot piston steam pressure reducing valve:

Nominal pressure (Mpa)	one point six	two point five
Shell test pressure (Mpa) *	two point four	three point seven five
Sealing test pressure (Mpa)	one point six	two point five
Maximum import pressure (Mpa)	one point six	two point five
Export pressure range (Mpa)	0.1-1.0	0.1-1.6
Pressure characteristic deviation (Mpa) △ P2P	GB12246-1989
Flow characteristic deviation (Mpa) △ P2G	GB12246-1989
Minimum pressure difference	zero point one five	zero point one five
leakage volume	GB12245-1989
Shell test does not include diaphragm and valve cover.

Main component materials of Y13H pilot piston steam pressure reducing valve:

Part Name	Part material
Valve body, valve cover, bottom cover	WCB
Valve seat disc	2Cr13
cylinder liner	2Cr13/25 (hard chrome plating)
piston	2Cr13/copper alloy
piston ring	Alloy Cast Iron
Guide valve seat and guide valve stem	2Cr13
Diaphragm	1Cr18Ni9Ti
Main valve spring	50CrVA
Main spring of pilot valve	50CrVA
Adjusting spring	60Si2Mn

Flow coefficient (Cv)

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

Connection size of Y13H pilot piston steam pressure reducing valve:

Nominal diameter DN	G	L	H	Hl
fifteen	1/2"	one hundred and forty	two hundred and ninety-five	ninety
twenty	3-4"	one hundred and forty	three hundred and thirty	ninety-eight
twenty-five	1"	one hundred and sixty	three hundred and thirty	one hundred and ten
thirty-two	1-1/4"	one hundred and eighty	three hundred and thirty	one hundred and ten
forty	1-1/4"	two hundred	three hundred and forty-five	one hundred and twenty-five
fifty	2"	two hundred and thirty	three hundred and forty-five	one hundred and twenty-five

Connection form: Internal thread connection