- Item Code: CI0021
- Pressure Rating: PN-1.6
- Testing Standard: IS 5312
- Size Range: 50mm to 500mm
- Product Standard: IS 5312
Suitable For
Material Specification
| P. NO. | NAME OF PART | MATERIAL | SPECIFICATION |
|---|---|---|---|
| 1 | STUDS & NUTS | CARBON STEEL | IS 1363 |
| 2 | COVER | CAST IRON | IS 210 Gr. FG200 |
| 3 | GASKET | C.N.A.F/RUBBER | IS 638 TYPEB |
| 4 | HINGE PIN | H.T. BRASS | IS 6912 FHTB1 |
| 5 | HINGE | CAST IRON | IS 210 Gr. FG200 |
| 6 | BODY | CAST IRON | IS 210 Gr. FG200 |
| 7 | SEAT RING | LEADED IN BRONZE | IS 318 LTB2 |
| 8 | DISC | CAST IRON | IS 210 Gr. FG200 |
| 9 | DISC RING | LEADED IN BRONZE | IS 318 LTB2 |
| 10 | WASHER | LEADED IN BRONZE/BRASS | IS 318 LTB2 |
| 11 | NUT | H.T. BRASS | IS 6912 FHTB1 |
| 12 | SIDE PLUG | LEADED IN BRONZE | IS 318 LTB2 |
Dimensional Data
| SIZE (mm) | 50 | 65 | 80 | 100 | 125 | 150 | 200 | 250 | 300 | 350 | 400 | 450 | 500 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| A | 200±2 | 216±2 | 241±2 | 292±3 | 350±2 | 356±2 | 495±2 | 622±4 | 698±4 | 800±4 | 900±5 | 1000±5 | 1100±6 |
| B | 16 | 16 | 21 | 22 | 23.8 | 23 | 24.5 | 26 | 27.5 | 29 | 30 | 31.5 | 33 |
| ∅C | 50 | 65 | 80 | 100 | 125 | 150 | 200 | 250 | 300 | 350 | 400 | 450 | 500 |
| ~H | 126 | 145 | 154 | 196 | 196 | 204 | 242 | 281 | 337 | 480 | 525 | 620 | 700 |
| ∅D | 165 | 185 | 200 | 220 | 254 | 285 | 340 | 395 | 445 | 505 | 565 | 615 | 670 |
| K | 125 | 145 | 160 | 180 | 215.9 | 240 | 295 | 350 | 400 | 460 | 515 | 565 | 620 |
| n | 4 | 4 | 4 | 8 | 8 | 8 | 8 | 12 | 12 | 16 | 16 | 20 | 20 |
| ∅d | 19 | 19 | 19 | 19 | 22.2 | 23 | 23 | 23 | 23 | 23 | 28 | 28 | 28 |
Principle Features
INTRODUCTION
Leader Reflux Valves are designed with high sensitivity to pressure so that the valve closes immediately far significant fluid stats flowing backward. Fluid reversing backward causes damage to equipment like boilers or pumps. The valve is activated by the flowing material in the pipeline. The pressure of the fluid passing through the system opens the valve, while any reversal of flow will closes the valve. Closure is accomplished by the weight of the check mechanism, by back pressure. Entirely automatic in action, depending upon differential pressure and velocity of flow within the line to perform ther functions of opening and closing.
- Design Std.: 1S 5312.
- Bolted Cover, Swing Disc design.
- Metal to Metal seating.
- Gun Metal Body & Disc rings.
- Design Prohibits Galling or Scoring of Seating Surfaces.
- One-Piece Disc Construction Designed to Withstand Severe Service Conditions.
- Large Bolted-On Cover Provides Easy Access to Interior for Routine Maintenance.
- Rigid & Sturdy design.
- Long service life as wear is minimal which makes it highly reliable.
- Valve is mechanically automatic and thus it does not need an actuator or valve operator.
- A horizontal or vertical duct can be used, easy to install.
- The valve must be installed in the direction of the flow arrow.
- Flanged ends as per IS:1538 PN-1.6 (FF).
- Widely applied for low-pressure and ambient-temperature utility services such as water supply, power plants, irrigation projects, air conditioning systems as well as fire fighting systems to prevent the backflow.
END CONNECTION
- Flanged ends as per IS:1538 PN-1.6 (FF).
- Flange drilling as per other standards also available upon request.
UTILISATION & SERVICE
- ‘LEADER’ Cast Iron Reklux valves are suitable for above-ground.
- Best suited for potable water, treated fresh water, neutral liquids & some gases.
WORKING PRESSURE
- Maximum Working Pressure: 16 Bar.
- See Pressure / Temperature Diagram.
TEMPERATURE LIMITS
- Maximum Working Temperature: 45°C.
- See Pressure / Temperature Diagram.
TEST PRESSURE (Hydrostatic)
| Rating | PN-1.6 |
|---|---|
| Body (Hyd.) | 2.4 MPa |
| Seat (Hyd.) | 1.6 MPa |