Pilot-Type Oversized Diaphragm High Sensitivity Reducing Valve
manufacturer: Shanghai MeiYan Yi Pump & Valve Co., Ltd.
Eml: sales@1bengfa.com
Tel: +86 (21) 5640 2009
Mob: +86 138 1691 3072（WeChat Same Account）
product drawing
Pilot-Type Oversized Diaphragm High Sensitivity Reducing Valves
Structural feature and function
This series of pressure reducing valve is the company reference foreign advanced products and developed successful new pilot-type oversized diaphragm valve, this product has made great improvement on the basis of ordinary pressure reducing valve. Adopting new diaphragm materials, and enlarge the working area greatly, so the slight change of valve upstream pressure or downstream load can be accurately and timely feedback to the main valve diaphragm, to regulate the main valve opening and ensure the stability of the downstream pressure.
This product has another prominent feature: multiple pilot valve can be installed and swap of the same body, at the same time of voltage-stabilizing, temperature control, upstream pressure control and remote switch control etc. can be achieved.
Dimensions & constructral diagram
Pilot-Type Oversized Diaphragm High Sensitivity Reducing Valve constructral diagram
Main technical parameter and performance norm
| nominal pressure(Mpa) | 2.5 |
| casing body test pressure(Mpa)* | 3.75 |
| sealing test presure(Mpa) | 2.5 |
| max. inlet presure (Mpa) | 2.5 |
| outlet pressure range(Mpa) | 0.02-1.6 |
| pressure property deviation(Mpa)△P2P | GB12244-1989 |
| flow property deviation(Mpa)P2G | GB12244-1989 |
| leakage quantity | GB12245-1989 |
Material of main parts
| name of part | material of parts |
| body, bonnet | WCB |
| valve seat | 2Cr13 |
| valve disc | 2Cr13 |
| valve rod | 2Cr13 |
| diaphragm | 1Cr18Ni9Ti |
| adjustable spring | 60Si2Mn |
Flow factor(Cv)
| DN | 15 | 20 | 25 | 32 | 40 | 50 |
| Cv | 2.9 | 5.3 | 8.6 | 11.6 | 16.5 | 29.1 |
Connecting dimensions
| 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 |
