- Overview
- Product Description
- Working Principle
- Application
- Specification
- Product Details
- Product Parameters
- View of the factory
Basic Info.
Product Description
Working Principle
Generally check valve is automatically working, under the pressure function of one direction flow, the disc open, while when the liquid back flows, the valve will cut flow. PTFE/PFA Lined check valves only allow one way flow direction and prevent the back-flow of liquids in pipeline. The solid PTFE ball at valve body lining guarantees that ball rolls into the seat due to gravitation.
FEP/PTFE/PFA Teflon Lined Ball Type Check Valve APPLICATION
FEP/PTFE/PFA Teflon Lined Ball Type Check Valve STANDARD
Design and manufacture standard: GB12235Face to face dimension: GB12221
Flange dimension standard: JB/T 79, ANSI B16.5, DIN 2543, JIS B2020
FEP/PTFE/PFA Teflon Lined Ball Type Check Valve MATERIAL
Body Material: WCB
Ball Material: WCB
Lining material: Fluorine plastic ( FEP, PTFE, PFA) or Rubber
FEP/PTFE/PFA Teflon Lined Ball Type Check Valve TEST AND INSPECTION
Lining Layer: Electrospark detecting
Test Standard: GB/T 13927, API 598
Nominal pressure : PN ( MPA)
Body test pressure: PNX1.5
Seal Test Pressure: PNX1.1
Materials:
No | Name | Material |
1 | Upper body | Cast iron, spheroidal graphite cast iron, carbon steel |
2 | Lower body | Cast iron, spheroidal graphite cast iron, carbon steel |
3 | Body lining | Fluorine plastic |
4 | Disc | Carbon steel fully covered with fluorine plastic |
Nominal size DN | Nominal pressure | Working pressure | L mm | D mm | D1 mm | D2 mm | n-Ф d mm | B mm | Weight kg/kilos |
20 | 1.0 | 1.0 | 160 | 105 | 75 | 59 | 4-14 | 128 |
|
25 | 160 | 115 | 85 | 68 | 4-14 | 128 |
| ||
32 | 180 | 140 | 100 | 78 | 4-18 | 150 | 4.5 | ||
40 | 200 | 150 | 110 | 88 | 4-18 | 160 | 7 | ||
50 | 230 | 165 | 125 | 102 | 4-18 | 178 | 8 | ||
65 | 290 | 185 | 145 | 122 | 4-18 | 205 | 10 | ||
80 | 310 | 200 | 160 | 133 | 8-18 | 230 | 18 | ||
100 | 350 | 220 | 180 | 158 | 8-18 | 255 | 24 | ||
125 | 400 | 250 | 210 | 184 | 8-18 | 305 | 30.5 | ||
150 | 480 | 285 | 240 | 212 | 8-22 | 345 | 47.5 | ||
200 | 500 | 340 | 295 | 268 | 8-22 | 415 | 63.5 | ||
250 | 0.6 | 0.6 | 550 | 395 | 350 | 320 | 12-22 | 495 | 96.5 |
300 | 0.4 | 620 | 445 | 400 | 370 | 12-22 | 540 | 144 | |
350 | 698 | 505 | 460 | 430 | 16-22 | 620 | 224 | ||
400 | 787 | 565 | 515 | 482 | 16-22 | 680 |
|
