Description:
| Technical Parameters |
| Model | PN(MPa) | Casting test pressure(MPa) | Seal test pressure (MPa) | Materials of body, bonnet |
| HQ41X-10 | 1 | 1.5 | 1.1 | iron or steel |
| HQ41X-16 | 1.6 | 2.4 | 1.76 |
| | | | |
| Mail part & material |
| Body : Cast iron, ductile cast iron ,WCB |
| Bonnet : Cast iron, ductile cast iron, WCB |
| Ball : cast steel coated with neoprene |
| Medium : water and weak corrosive fluid |
| Dimensions | | | | | | |
| DN(mm) | L | D | D1 | D2 | Z-φd | H |
| 50 | 180 | 160 | 125 | 100 | 4-18 | 185 |
| 65 | 200 | 180 | 145 | 120 | 4-18 | 210 |
| 80 | 260 | 195 | 160 | 135 | 4-18/8-18 | 245 |
| 100 | 300 | 215 | 180 | 155 | 8-18 | 280 |
| 125 | 350 | 245 | 210 | 185 | 8-18 | 335 |
| 150 | 400 | 280 | 240 | 210 | 8-23 | 400 |
| 200 | 500 | 335 | 295 | 265 | 8-23/12-23 | 495 |
| 250 | 600 | 390/405 | 350/355 | 320 | 12-23/12-25 | 600 |
| 300 | 700 | 440/460 | 400/410 | 375 | 12-23/12-25 | 715 |
| 350 | 800 | 500/520 | 460/470 | 435 | 16-23/16-25 | 820 |
Check Valve - Ball type (nonreturn valve) was the first valves at
with a unique design. A very simple
but robust design with no critical mechanism involved.
All parts like hinge pin disc mechanism used in conventional valve
are eliminated, and has put in a
reinforced rubber coated ball to arrest flow media in return
condition.
This ball, moves totally out of the flow path when the pumping is
on to give minimum head losses.
The spherical rubber coated ball seals perfectly on the rounded
valve seat ensuring a totally leak proof
sealing.
This design offers other advantages like non clogging & self
cleaning. In this virtually maintenance free
valves, if required, after prolonged usage, the on-line replacement
of the ball is just a minute job.
* Lower power consumption
* Larger solid handling capacity
* Self cleaning, Non-Clogging
* Perfect Sealing
* Low pressure drop
Principle:
The heart of this valve is a reinforced rubber ball. The unique
design of the valve allows free movement of the ball.
The ball moves to open position when the pump starts & allows free
flow of liquid without any interference (See Fig.).
As the pump stops, the ball seats firmly against the metal seat due
to its own weight & back pressure of
the liquid (Mouse over fig.). This results in DROPLESS sealing.
Part List / Materials of Construction
| Part | Description | Standard | Special |
| 1. | Body | Cast Iron | St. Steel, Cast Steel |
| 2. | Cover | Cast Iron | St. Steel, Cast Steel |
| 3. | Ball | Nitrile Reinforced | EPDM, Neoprene |
| 4. | Cover Ring | Nitrile Rubber | Butyle, Viton |
| 5. | Ball Seat Ring | L. T. Bronze | St. Steel, Hard Rub. |
| 6. | Fasteners | Carbon Steel | St. Steel |
