YD43H Diaphragm Reducing Valve

DP17/DP17G Diaphragm Reducing Valve

Feature and Application:

The performance of this reducing valve has been improved greatly than the ordinary pressure reducing valve. The new mebrane is adopted on DP17/DP17G diaphragm reducing valve and the work area is increased greatly. Therefore, the subtle change of valve upstream pressure or downstream load can be feedback accurately and timely to the main valve diaphragm. Then the main valve opening of DP17/DP17G diaphragm reducing valve can be adjusted to ensure the stability of the downstream pressure. Another prominent feature of this product is that many pilot valves can be installed on the same DP17/DP17G diaphragm reducing valve at the same time. Under the stable pressure temperature control, upstream pressure control, remote switch control and others can be realized.

Performance Index of YD43H Diaphragm Reducing Valve:


A-D-E: thread connection or flange connection EN 1092 PN25, ANSI 300LB.
A-B-C: flange connection ANSI 150LB.
F-F:DP17G maximum operating temperature 120℃.
Note: the pressure regulating range of this series of products is 0.2-1.7bar g.

Technical Parameters of YD43H Diaphragm Reducing Valve:

Nominal pressure	PN25
PMA Maximum allowance pressure	25bar g @ 120℃
TMA Maximum allowable temperature	232℃
TMI Minimum allowable temperature	-10℃
PMO Maximum operating pressure	17bar g
TMO Maximum operating temperature	DP17 232℃
	DP17G 120℃
TMIO Minimum operating temperature	0℃
Outlet pressure(bar g)	0.2-1.7
Maximum cold hydraulic test pressure	38bar g

Component and Material of YD43H Diaphragm Reducing Valve:

Component	Material
Valve body, valve cover	WCB
Valve seat	2Cr13
Valve clack	2Cr13
Stem	2Cr13
Mebrane	316
Adjusting spring	60Si2Mn
Valve spring	50CrVA

Flow Coefficient (CV):

DN	15	20	25	32	40	50
CV	2.5	5.5	8.1	12	17	28

Connecting Dimension of YD43H Diaphragm Reducing Valve:

DN	RC	L	H1	H	D
15	2001-1-2	147	221	133	185
20	2001-3-4	154	224	136	185
25	1	160	235	145	207
32	2001-1-4	180	236	156	207
40	2001-1-2	200	238	176	255
50	2	230	246	183	255

Statement: this information is just for reference, for detailed information, please contact us.