Corrugated Pipe Type 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
Corrugated pipe type reducing valves
Y44H type direct effect corrugated pipe type reducing valve function
This valve is used in the steam below 180 °, air and other noncorrosive gas pipelines, after adjusting, the medium pressure reduce to a desired outlet pressure, and the outlet pressure of medium remained relatively stable, but the inlet and outlet pressure difference must be greater than or equal to 0.5 bar.
Dimensions & constructral diagram
Corrugated pipe type reducing valve constructral diagram
Main technical parameter and performance norm
| nominal pressure（Mpa） | 0.6 | 1.0 | 1.6 |
| casing body test pressure（Mpa）* | 0.9 | 1.5 | 2.4 |
| sealing test pressure（Mpa） | 0.6 | 1.0 | 1.6 |
| Max. inlet pressure（Mpa） | 0.6 | 1.0 | 1.6 |
| outlet pressure range（Mpa） | 0.05-0.4 | 0.1-0.8 | 0.1-1.0 |
| pressure performance deviation（Mpa）△P2P | GB12244-1989 | ||
| flow performance deviation（Mpa）△P2G | GB12244-1989 | ||
| min. pressure difference（Mpa） | 0.1 | 0.15 | 0.15 |
| leakage quantity | GB12245-1989 | ||
| *： Casing test does not include corrugated pipe, you must take down the corrugated pipe component before casebody pressure test | |||
Material of main part
| name of part | material |
| body,bonnet | WCB |
| bottom cap | WCB |
| seat,disc | 2Cr13 |
| corrugated pipe | 1Cr18Ni9Ti |
| corrugated pipe up gasket | 2Cr13 |
| corrugated pipe down gasket | 2Cr13 |
| guiding seat | 2Cr13 |
| main valve spring | 50CrVA |
| adjust spring | 60Si2Mn |
Flow factor（Cv）
| DN | 15 | 20 | 25 | 32 | 40 | 50 | 65 | 80 | 100 |
| Cv | 1 | 2.5 | 4 | 6.5 | 9 | 16 | 25 | 36 | 64 |
Connecting dimensions
| nominal diameter DN | external dimensions | ||||||||||||||||||
| L | H | H1 | PN0.6MPa | PN1.0MPa | PN1.60MPa | ||||||||||||||
| D | K | n-ф | d | C | D | K | n-ф | d | C | D | K | n-ф | d | C | |||||
| 15 | 140 | 140 | 290 | 90 | 80 | 55 | 4-12 | 40 | 12 | 95 | 65 | 4-14 | 45 | 12 | 95 | 65 | 4-14 | 45 | 14 |
| 20 | 140 | 140 | 295 | 98 | 90 | 65 | 4-12 | 50 | 12 | 105 | 75 | 4-14 | 55 | 14 | 105 | 75 | 4-14 | 55 | 14 |
| 25 | 160 | 160 | 295 | 110 | 100 | 75 | 4-12 | 60 | 14 | 115 | 85 | 4-14 | 65 | 14 | 115 | 85 | 4-14 | 65 | 14 |
| 32 | 180 | 180 | 295 | 110 | 120 | 90 | 4-14 | 70 | 14 | 135 | 100 | 4-18 | 78 | 16 | 135 | 100 | 4-18 | 78 | 16 |
| 40 | 200 | 200 | 325 | 125 | 130 | 100 | 4-14 | 80 | 14 | 145 | 110 | 4-18 | 85 | 16 | 145 | 110 | 4-18 | 85 | 16 |
| 50 | 230 | 230 | 325 | 125 | 140 | 110 | 4-14 | 90 | 14 | 160 | 125 | 4-18 | 100 | 16 | 160 | 125 | 4-18 | 100 | 16 |
| 65 | 280 | 325 | 130 | 160 | 130 | 4-14 | 110 | 14 | 180 | 145 | 4-18 | 120 | 18 | 180 | 145 | 4-18 | 120 | 18 | |
| 80 | 310 | 380 | 160 | 185 | 150 | 4-18 | 125 | 16 | 195 | 160 | 4-18 | 135 | 18 | 195 | 160 | 8-18 | 135 | 20 | |
| 100 | 350 | 380 | 170 | 205 | 170 | 4-18 | 145 | 16 | 215 | 180 | 8-18 | 155 | 20 | 215 | 180 | 8-18 | 155 | 20 | |
