YG43H

This series of pressure reducing valve belongs to the pilot piston type pressure reducing valve. By the main valve and pilot valve two parts. Main valve mainly by the valve seat, the main valve plate, piston, spring and other parts of the composition. The pilot valve is mainly composed of valve seat, valve, diaphragm, spring, adjusting spring and so on. By adjusting the spring pressure to set the outlet pressure, the use of the diaphragm sensing outlet pressure change, through the pilot valve opening and closing the main valve throttle position of the flow area of the size, to achieve the function of pressure relief.
This series of products made the following improvements in the ordinary valve base, increase the piston area, changing the throttle structure, change the seal in the form, structure and improve the pilot valve spring adjustment form to the following aspects of improving the performance of the product.
1, improve the change of the pressure on the export of the sensing performance, improve the sensitivity, greatly reducing the pressure due to upstream pressure changes, flow changes and other factors caused by the pressure deviation.
2, improve the streamline distribution, reduce the noise.
3, improve the sealing surface structure, to extend the life of the sealing surface.
Note: parameters are for reference only, or are not full. Valve can be used in accordance with the requirements of different pressure, material, diameter, drive, etc.. Specific please contact or online advisory contact.

Part name	Part material
The valve body valve cover Gaidi	WCB
Valve seat valve	2Cr13
Cylinder piston	Aluminum iron bronze
diaphragm	PH15-7Mo
Piston ring	Para polystyrene
Pilot valve seat pilot valve	2Cr13
Main valve spring	50CrVA
Guide main spring	50CrVA
Regulating spring	60Si2Mn

Nominal pressure(Mpa)	1.0	1.6
Shell test pressure(Mpa)*	1.5	2.4
Seal test pressure(Mpa)	1.0	1.6
inlet pressure(Mpa)	1.0	1.6
Outlet 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
difference(Mpa)	0.05	0.07
Seepage quantity	GB12245-1989

Nominal diameter DN	Outline dimension			Connection dimension
	L	H	H1	PN 1.0MPa					PN 1.6MPa
				D	K	n-ф	d	C	D	K	n-ф	d	C
15	140	160	65	95	65	414	45	12	95	65	414	45	14
20	140	160	65	105	75	414	55	14	105	75	414	55	14
25	150	168	68	115	85	414	65	14	115	85	414	65	14
32	180	185	75	135	100	418	78	16	135	100	418	78	16
40	180	185	78	145	110	418	85	16	145	110	418	85	16
50	200	193	88	160	125	418	100	16	160	125	418	100	16
65	230	208	98	180	145	418	120	18	180	145	418	120	18
80	260	228	117	195	160	418	135	18	195	160	818	135	20