YD43H

This series of pressure reducing valve is the company's reference to foreign advanced products and developed a new type of pilot large diaphragm pressure relief valve, the product in the ordinary pressure relief valve on the basis of a great improvement. The diaphragm is made of new material, and greatly processing work area, so the valve pressure upstream or downstream load minor changes can timely and accurate feedback to the main valve diaphragm opening to adjust the main valve, to ensure the stability of downstream pressure.
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
Valve body valve cover	WCB
valve seat	2Cr13
Valve	2Cr13
The stem	2Cr13
diaphragm	1Cr18Ni9Ti
Regulating spring	60Si2Mn

Nominal pressure(Mpa)	2.5
Shell test pressure(Mpa)*	3.75
Seal test pressure(Mpa)	2.5
inlet pressure(Mpa)	2.5
Outlet pressure range(Mpa)	0.02-1.6
Pressure characteristic deviation(Mpa)△P2P	GB12244-1989
Flow characteristic deviation(Mpa)P2G	GB12244-1989
Seepage quantity	GB12245-1989

DN	L	H1	H	D
15	147	235	145	207
20	154	235	145	207
25	160	235	145	207
32	180	250	160	220
40	16	250	160	220
50	230	270	180	220