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Flange Double plate check valve
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PRODUCT DETAILS
Flange Double Plate Check valve Introduction
This Flange Double Plate Check Valve is a reliable choice for preventing backflow in plumbing systems. With its durable flange design and double plate mechanism, it ensures long-lasting performance and efficient operation. Trust this valve for secure and hassle-free use in any plumbing application.
Flange Double Plate Check valve Drawing
Specifications:
|
Nominal pressue (MPa) |
1.0 |
1.6 |
|
|
Nominal diameter(mm) |
50-1000 |
50-1000 |
|
|
Test pressure |
Shell |
1.5 |
2.4 |
|
(MPa) |
Seal |
1.1 |
1.76 |
|
Applicable temperature |
150 |
||
|
Applicable medium |
Fresh water, Sewage, Sea water, Air, Vapor, Food, Medicine, Oils, Acids, |
||
|
Operating mode |
manual, worm gear, pneumatic, electric, etc. |
||
Standards:
|
Design & Manufacture |
Flange Connection |
Face to Face Dimension |
Test & Inspection |
|
API 594 |
DIN PN10/16/25 |
API594 |
API 598 |
Material:
| body | Cast Iron, Ductile Iron, Carbon Steel, Stainless Steel |
| Plate | Ductile Iron, Carbon Steel, Stainless Steel |
| Spring | Stainless Steel |
| Hinge Pin | Stainless Steel |
| Plug | carbon steel |
| Body Bearing | PTFE |
| Spring Bearing | PTFE |
| Stop Pin | Stainless Steel |
| Eye Bolt | Carbon Steel |
| Body Seat | NBR, EPDM, Viton, Neoprene |
Application:
Chemicals, air, water, steam, oil, acids, salts ect
Features:
1. Small in size, light in weight, compact in structure,easy in maintenance.
2. Two torsion springs are used excreting on each of the pair valve plates,which close the plates quickly
And automatically.
3. The quick-close action prevents the medium from flowing back and eliminates water hammer effect.
4. Short body structure length and good rigidity.
5. This valve is tightly sealed, without leakage under the pressure water test.
6. Safe and reliable in operation,high interference-resistance.
Standard Materials Of Main Parts
| ITEM | PART NAME | MATERIAL |
|---|---|---|
| 1 | STOP PIN | Ss304 |
| 2 | HINGLE PIN | Ss304 |
| 3 | SPRING | Ss304 |
| 4 | PLATE | DI |
| 5 | BODY | CI |
| 6 | SEAT | EPDM |
| 7 | BEARING | PTFE |
Dimensions: (mm)
| SIZE (inches) | DN | L | PN10 | PN16 | ||||
|---|---|---|---|---|---|---|---|---|
| D | D1 | D2 | Z-d | D | D1 | |||
| 2 | 50 | 43 | 165 | 125 | 99 | 4-19 | 165 | 125 |
| 2.5 | 65 | 46 | 185 | 145 | 118 | 4-19 | 185 | 145 |
| 3 | 80 | 64 | 200 | 160 | 132 | 8-19 | 200 | 160 |
| 4 | 100 | 64 | 220 | 180 | 156 | 8-19 | 220 | 180 |
| 5 | 125 | 70 | 250 | 210 | 184 | 8-19 | 250 | 210 |
| 6 | 150 | 76 | 285 | 240 | 211 | 8-23 | 285 | 240 |
| 8 | 200 | 89 | 340 | 295 | 266 | 12-23 | 340 | 295 |
| 10 | 250 | 114 | 405 | 355 | 319 | 12-23 | 405 | 355 |
| 12 | 300 | 114 | 460 | 410 | 370 | 12-28 | 460 | 410 |
| 14 | 350 | 127 | 520 | 470 | 429 | 16-28 | 520 | 470 |
| 16 | 400 | 140 | 580 | 525 | 480 | 16-31 | 580 | 525 |
| 18 | 450 | 152 | 640 | 585 | 548 | 20-31 | 640 | 585 |
| 20 | 500 | 152 | 715 | 650 | 609 | 20-34 | 715 | 650 |
| 24 | 600 | 178 | 840 | 770 | 720 | 20-37 | 840 | 770 |
| 28 | 700 | 229 | 910 | 840 | 794 | 24-37 | 910 | 840 |
| 32 | 800 | 241 | 1025 | 950 | 901 | 24-41 | 1025 | 950 |
| 36 | 900 | 241 | 1125 | 1050 | 1001 | 28-41 | 1125 | 1050 |
| 40 | 1000 | 300 | 1255 | 1170 | 1112 | 28-44 | 1255 | 1170 |
REVIEWS
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FAQs
What is a check valve used for?
A check valve is a valve that allows fluid to flow in one direction and prevents backflow. The structure can be divided into two major categories: one is a ball check valve, whose gate body is spherical and can be opened or closed automatically; the other is a disc check valve, whose gate body is a round disc shape that can prevent backflow according to the pressure of the fluid.
What materials are check valves made of?
Check valves can be made of a variety of materials, including brass, stainless steel, cast iron, plastic (PVC or CPVC), and other alloys, and are selected according to the application and fluid type.
Where are check valves usually installed?
Check valves are commonly used in applications such as water and wastewater systems, oil and gas pipelines, chemical processing, and HVAC systems to prevent backflow and protect equipment.
How to tell if a check valve is working properly?
A properly functioning check valve should allow fluid to flow in one direction without any noticeable resistance and completely prevent backflow. Signs of failure include reverse flow, unusual noise or vibration.
How to install a check valve?
Check valves should be installed in the direction of flow indicated on the valve body. Check valves are usually installed in horizontal or vertical piping systems, depending on the specific type and purpose.