Product Drawing
Internal Thread Bigger Diaphragm-type High Sensitivity Reducing Valves
Structural Features and Functions
This series of pressure reducing valve is the reference of foreign congener product development, belongs to the direct effect diaphragm spring pressure reducing valve, the outstanding feature is to greatly increase working area, therefore, compared with the samekind, diaphragm is expecially sensitivity to the downstream pressure variation, the tiny change of downstream pressure (e.g. 0.01 MPa) will cause diaphragm and valve core distinct adjust action, which obviously greatly improves the function of voltage-maintaining.
This series of products are especially suitable for large variation of inlet pressure and outlet flow, stable outlet pressure pipeline.
Dimensions & Constructral Diagram
Internal Thread Bigger Diaphragm-type High Sensitivity Reducing Valve Constructral Diagram
Main Technical Parameter
| nominal pressure (MPa) |
1.6 |
| case body test pressure (MPa)* |
2.4 |
| sealing test pressure(MPa) |
1.6 |
| max. inlet pressure (MPa) |
1.6 |
| outlet pressure range (MPa) |
0.03-1.0 |
| pressure performance deviation(MPa)△P2P |
GB12246-1989 |
| flow performance deviation(MPa)P2G |
GB12246-1989 |
| leakage quantity |
GB12245-1989 |
Material of Main Parts
| Name of Part |
Material of Part |
| body,bonnet |
WCB |
| valve seat |
410 S.S. |
| valve dise |
410 S.S. |
| valve rod |
410 S.S. |
| diaphragm |
321 S.S. |
| adjustable spring |
UNS G92600 |
Flow Factor (Cv)
| DN |
15(1/2") |
20(3/4") |
25(1") |
32(1-1/4") |
40(1-1/2") |
50(2") |
| Cv |
1.2 |
2.2 |
4 |
7 |
12 |
19 |
Connecting Dimensions
| DN |
G |
L |
H1 |
H |
D |
| 15(1/2") |
Rc1/2" |
95 |
55 |
170 |
100 |
| 20(3/4") |
Rc3-4" |
95 |
55 |
170 |
100 |
| 25(1") |
Rc1" |
100 |
60 |
190 |
120 |
| 32(1-1/4") |
Rc1-1/4" |
165 |
75 |
220 |
150 |
| 40(1-1/2") |
Rc1-1/2" |
190 |
90 |
250 |
180 |
| 50(2") |
RG2" |
200 |
110 |
300 |
220 |