Kirloskar Single Plate Check Valves
Single-Plate Wafer Check Valve: Technical Specifications & Features
The Single-Plate Wafer Check Valve (designed in according with API 6D standards) is an engineered fluid control solution built to stop reverse flow in municipal, industrial, and commercial piping systems.
Key System Advantages & Features
- Drop-Tight Sealing: Machined seating surfaces deliver positive, zero-leakage shut-off during backpressure conditions.
- Slam-Free Closure: Integrated with a lightweight disc and a custom D-shaped high-torsion spring to ensure quick closure before flow reversal, preventing damaging water hammer.
- Low-Pressure Operation: Opens and closes with minimal differential pressure, reducing friction losses across the line.
- Low-Maintenance Hinge: Built with an innovative hinge pin assembly for long service life without frequent maintenance.
Technical Specifications Overview
|
Feature |
Standard Configuration |
Optional Upgrades |
|
Design Standard |
API 6D |
— |
|
Testing Standard |
API 598 |
— |
|
Size Range |
40 mm to 600 mm (1.5" to 24") |
Custom sizes upon request |
|
Flange Compatibility |
ANSI B16.5 Class 150 |
BS 10 (Table D/E), IS 1538 (Table 4/6) |
|
Body Material |
Cast Iron (IS 210 Gr. FG 260) / CS (ASTM A216 WCB) |
Ductile Iron, Stainless Steel (CF8 / CF8M / CF3M) |
|
Disc Material |
Mild Steel / Cast Steel (ASTM A216 WCB) |
Stainless Steel (CF8 / CF8M) |
|
Seat Material |
Nitrile Rubber (NBR) |
EPDM |
|
Spring Material |
Stainless Steel AISI 316 (1.5" to 12" sizes) |
Custom alloys |
Note: Valves sized 350 mm and above are manufactured as springless designs.
Hydrostatic Pressure Test Limits
|
Rating Class |
Body Test Pressure (Kg/Cm2) |
Seat Test Pressure (Kg/Cm2) |
|
Class 150 |
30 |
22 |
|
Class 300 |
79 |
58 |
|
PN 10 |
15 |
10 |
|
PN 16 |
24 |
16 |
Industrial Applications
- Water Supply & Distribution: Prevents reverse flow back into municipal supply pumps and rising mains.
- Industrial Facilities: Protects pumping infrastructure in chemical, power generation, and HVAC systems.
- Oil & Gas Pipeline Infrastructure: Maintains unidirectional flow under varying pressure ratings.
