Flange Ball Check Valve
manufacturer: Shanghai MeiYan Yi Pump & Valve Co., Ltd.
E-mail: sales@1bengfa.com
Tel: +86 (21) 5640 2009
Mob: +86 138 1691 3072（WeChat Same Account）
product drawing
HQ44X flange single check valves
HQ45X flange double ball check valve
Usages and features
HQ44X flange single-ball tiny drag check valve, HQ45X flanged double ball tiny drag check valve are based on the rubber wrapping ball as disc, and their theory is scrolling front and back in the chute of the body under the effect of the media, and thus to achieve open or close the valve. The main characteristics of both valves are: large flow, small resistant pressure loss, good sealing performance, muffler closure can reduce the water hammer wave. They can be horizontal or vertical installation. Tiny drag ball cehck valve can be used in the outlet of pumps for cold water, hot water, industrial and sewage pipe network, to prevent the media backflow.
Dimensions & constructral diagram
HQ44X flange single ball check valve constructral diagram
HQ45X flange double ball check valve constructral diagram
Main technical parameter
| type | nominal pressure （MPa） | shell test pressure（MPa） | sealing test pressure（MPa） | body material | ball material |
| HQ44/45-10 | 1.0 | 1.5 | 1.1 | cast iron | carbon steel packed with rubber |
| HQ44/45-16 | 1.6 | 2.4 | 1.76 |
Main external dimensions
| HQ44X-10/16 external dimensions | |||||||||
| nominal diameter | 50 | 65 | 80 | 100 | 125 | 150 | 200 | 250 | 300 |
| L(mm) | 250 | 280 | 310 | 350 | 400 | 450 | 550 | 650 | 750 |
| H (mm) | 180 | 210 | 225 | 245 | 280 | 320 | 380 | 450 | 510 |
| connection dimension | flange connection dimension PN1.0Mpa accordng to GB4216.4-84；PN1.6MPa according to GB4216.5-84 | ||||||||
Main external dimensions
| HQ45X-10/16\external dimensions | ||||||||||||
| \nominal diameter | 200 | 250 | 300 | 350 | 400 | 450 | 500 | 600 | 700 | 800 | 900 | 1000 |
| L(mm) | 550 | 650 | 750 | 850 | 950 | 1050 | 1150 | 1350 | 1450 | 1650 | 1900 | 2100 |
| H (mm) | 510 | 570 | 640 | 715 | 815 | 825 | 980 | 1155 | 1260 | 1350 | 1660 | 1700 |
| \connection dimensions | \flange connection dimensionPN1.0Mpa accordng to GB4216.4-84；PN1.6Mpa accordng to GB4216.5-84 | |||||||||||
