The Poline PN16 Dual Plate Check Valve with SG Iron Disc – Wafer Type is engineered for automatic backflow prevention in water, HVAC, fire fighting, industrial, and utility pipeline systems. Designed according to API 594, this compact wafer type valve occupies less space and weighs significantly less than conventional swing check valves.
The valve uses spring assisted dual plates for rapid closing action, reducing reverse flow and minimizing water hammer effects. Its cylindrical body construction distributes stresses evenly, while the streamlined flow path offers low pressure drop and improved system efficiency.
The SG Iron Disc construction provides strength and durability, making it suitable for demanding industrial service conditions.
| Parameter | Details |
|---|---|
| Product Type | Dual Plate Check Valve |
| Body Type | Wafer Type |
| Pressure Rating | PN16 |
| Design Standard | API 594 |
| Testing Standard | API 598 |
| Disc Material | SG Iron |
| End Compatibility | ANSI Class 125 / ASME Class 150 |
| Shell Test Pressure | 24.50 kg/cm²g (300 psig) |
| Seat Test Pressure | 16 kg/cm²g |
| Working Temperature | Up to 80°C |
The Poline Dual Plate Check Valve is widely used in:
Poline Valves manufactures dependable non-return solutions designed for compact installation, efficient flow performance, and long service life. Our dual plate check valves help protect pumps and systems from reverse flow damage.
A dual plate check valve uses two spring-loaded plates that open with forward flow and close automatically when flow reverses.
Wafer type valves are compact, lightweight, and require less installation space.
The spring-assisted quick closing action helps minimize sudden reverse flow shock.
PN16 indicates a nominal pressure rating of 16 bar.
It is commonly used in water, HVAC, fire systems, and industrial pipelines.
For pricing, OEM supply, dealership enquiries, or bulk orders for PN16 Dual Plate Check Valve with SG Iron Disc – Wafer Type, contact Poline Valves today.
| MATERIAL LIST | ||||
|---|---|---|---|---|
| Part No | Part Name | Material | Specification | Qty |
| 1 | Body | Cast Iron | IS 210 Gr. FG 200 | 1 |
| 2 | Body Lining | Nitrile Rubber | IS 5192-1 | 1 |
| 3 | Flap / Disc | S.G. Iron | ASTMA 536 | 2 |
| 4 | Hinge Pin | Stainless Steel | IS 6603 | 1 |
| 5 | Stop Pin | Stainless Steel | IS 6603 | 1 |
| 6 | Spring | Stainless Steel | IS 6603 | - |
| 7 | Washer | Stainless Steel | IS 6603 | - |
| 8 | Packing Washer | Nitrile Rubber /PTFE | IS 5192-1 | - |
| 9 | Retainer Plug | Carbon Steel | - | 2/4 |
| 10 | Hook | Carbon Steel | IS 1367 | - |
| SUITABLE FOR | ||||
|---|---|---|---|---|
| GASES | AIR | STEAM | OIL | WATER |
| SIZE DESCRIPTION |
|---|
| Size (mm) | A ±1.5 | Ø B | ØC |
| 40 | 50 | 92 | 56 |
| 50 | 54 | 101 | 60 |
| 65 | 60 | 120 | 73 |
| 80 | 67 | 133 | 89 |
| 100 | 67 | 171 | 114 |
| 125 | 83 | 193 | 141 |
| 150 | 95 | 218 | 168 |
| 200 | 127 | 276 | 219 |
| 250 | 140 | 336 | 273.5 |
| 300 | 181 | 406 | 324 |
| 350 | 184 | 451 | 357 |