Internal Thread Pressure Reducing And Maintaining Valve For Water
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
Internal thread pressure reducing and maintaining valve for water reducing valves
Summary
The production YW110. YW116. YW125. YFW110 type pressure-reducing-and-maintaining valve, has been developed to the second generation, the main characteristics of the second generation product: 1,the diameter more than DN65 is piston-type, and improve more than 3 times service life replacing diaphragm, 2 the diameter less than DN50, a nylon reinforced the flat diaphragm rubber instead of the original diaphragm, also improve life more than 3 times. Applicable medium: water, air. Medium temperature: 0 ~90 ° C.
Material of main parts
| name of parts | material |
| spring cap,body,bonnet | grey cast iron,cast steel |
| rubber diaphragm | nylon strengthen rubber |
| sealing gasket | NBR |
| adjustable spring | Si-Mn Steel |
| piston,cylinder sleeve | Stainless Steel |
| valve rod | copper |
Main extrenal dimensions（Flange dimension PN1.0Mpa abide BY GB4216.4-84 STANDARD,PN1.6Mpa ABIDE BY GB4216.5-84 Standard,PN2.5Mpa abide BY GB9113.4-88 STANDARD）
| type | dimensions (mm) | ||||||||||||||||
| YW410-10 YW416-16 TW425-25 | DN | 15 | 20 | 25 | 32 | 40 | 50 | 65 | 80 | 100 | 125 | 150 | 200 | 250 | 300 | 350 | 400 |
| L | 108 | 117 | 127 | 140 | 165 | 203 | 216 | 241 | 292 | 330 | 356 | 495 | 622 | 398 | 787 | 914 | |
| H | 105 | 105 | 115 | 120 | 165 | 165 | 190 | 250 | 274 | 350 | 368 | 395 | 433 | 475 | 520 | 570 | |
| YW110-10 YW116-16 | pipe thread | 1/2 | 3/4 | 1 | 1 1/4 | 1/2 | 2 | ||||||||||
| L | 100 | 100 | 120 | 150 | 150 | 180 | |||||||||||
| H1 | 135 | 135 | 152 | 180 | 196 | 201 | |||||||||||
| H2 | 41 | 41 | 45 | 53 | 56 | 58 | |||||||||||
