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GL41F46 cast steel fluorine-lined Y-strainer is a pipeline protection device specifically designed for harsh and highly corrosive working conditions. Its core technology involves an overall lining of high-performance F46 (Fluorinated Ethylene Propylene) fluoroplastic inside a high-quality cast steel matrix. The valve adopts a classic Y-shaped flow structure, intercepting solid particles and impurities in the medium through an internal fluorine-lined filter screen to protect downstream equipment such as pumps, flow meters, and precision control valves from mechanical damage and erosion. Relying on the high pressure-bearing capacity of the cast steel shell and the chemical inertness of the fluoroplastic lining, this product effectively handles strong aggressive media such as acids, alkalis, salts, and strong oxidants. It is a critical device for fluid purity control and equipment corrosion protection in industries such as chemical processing, pharmaceuticals, environmental protection, and semiconductor cleaning.

Product Image of GL41F46 Cast Steel Fluorine-lined Y-Strainer
Feature
1.Excellent strong corrosion resistance:The overall lining is made of high-performance F46 (FEP) material, which can resist the erosion of almost all strong acids, strong alkalis, and organic solvents except for molten alkali metals and elemental fluorine, ensuring long-term operational stability in extreme chemical conditions.
2.High-strength metal pressure-bearing matrix:The valve body shell is made of high-quality cast steel (WCB), which effectively compensates for the lack of mechanical strength in pure fluoroplastic strainers. It provides excellent tensile, impact, and pressure resistance, adapting to various complex medium and high-pressure piping environments.
3.Optimized streamlined Y-shaped design:The internal cavity of the valve body adopts a flow-path structure optimized by fluid dynamics. Combined with a large-capacity fluorine-lined mesh core, the effective filtration area is much larger than the cross-sectional area of the pipe diameter, ensuring efficient impurity interception while minimizing the pressure drop loss of the medium flow.
4.Highly reliable lining process:Advanced injection molding or compression molding processes are used to tightly bond the F46 lining layer with the internal wall of the cast steel, providing strong adhesion and excellent resistance to negative pressure. This effectively prevents lining peeling or collapse under vacuum conditions or intense pressure fluctuations.
5.Integrally molded sealing surface technology:The lining layer extends to the flange connection surface and is integrally molded. Combined with fluoroelastomer or PTFE seals, it can achieve bubble-tight sealing, completely eliminating the risk of strong corrosive media leaking through the flange interface to the external environment.
6.Convenient online maintenance and cleaning:The structure is compact and reasonable, with a quickly removable fluorine-lined blowdown cover at the bottom. During filter element cleaning or replacement, there is no need to cut or remove the valve from the pipeline. The filter basket can be taken out for cleaning simply by loosening the cover bolts, significantly reducing maintenance downtime.
7.High medium purity:Since the F46 lining has extremely high chemical stability and surface smoothness, it will not cause secondary contamination to the transported process fluid. It is particularly suitable for industrial processes with strict cleanliness requirements, such as pharmaceuticals, polysilicon, and fine chemicals.
8.Wide range of condition adaptability:A variety of specifications and filtration precision options are provided. It is not only suitable for corrosive liquids at ambient temperature but can also maintain stable mechanical and anti-corrosion performance within a certain temperature fluctuation range, offering an extremely long service life and low total maintenance costs.

Structural Drawing of GL41F46 Cast Steel Fluorine-lined Y-Strainer
List of Component Names and Materials
| SNO | Part Name | Common Materials |
| 1 | Shell | HT250, WCB, CF8, CF3, CF8M, CF3M |
| 2 | Filter cover | HT250, WCB, CF8, CF3, CF8M, CF3M |
| 3 | Filter screen | F46/FEP (Fluorinated Ethylene Propylene), F4/PTFE (Polytetrafluoroethylene), PFA (Perfluoroalkoxy) |
| 4 | Gasket | F46/FEP (Fluorinated Ethylene Propylene), F4/PTFE (Polytetrafluoroethylene) |
| 5 | Bolt | 35, 35, 304, 304, 316, 316 |
| 6 | Nut | 45, 45, 304, 304, 316, 316 |
Performance Specification Sheet
| Performance Specification Sheet | |||
| Nominal Pressure | 1.6 | 2.5 | MPa |
| Strength test pressure | 2.4 | 3.8 | |
| Sealing test pressure | 1.76 | 2.8 | |
| Applicable Temperature | -20~+450 | ℃ | |
Standard requirements for external dimensions
1. The structural length of the valve shall comply with the standard of GB/T12221
2. Connecting flanges according to GB/T17241.6 standard

Outline Drawing of GL41F46 Cast Steel Fluorine-lined Y-Strainer
| DN | 'inch | L | H | H1 | L | H | Weight(KG) |
| 15 | 1/2 | 125 | 70 | 150 | 2 | ||
| 20 | 3/4 | 145 | 70 | 150 | 3 | ||
| 25 | 1 | 160 | 80 | 160 | 3.8 | ||
| 32 | 1 1/4 | 180 | 90 | 180 | 6 | ||
| 40 | 1 1/2 | 200 | 100 | 240 | 7.2 | ||
| 50 | 2 | 220 | 130 | 250 | 300 | 130 | 10 |
| 65 | 2 1/2 | 260 | 165 | 350 | 350 | 165 | 17 |
| 80 | 3 | 280 | 195 | 390 | 400 | 195 | 20 |
| 100 | 4 | 320 | 230 | 450 | 450 | 230 | 32 |
| 125 | 5 | 350 | 300 | 520 | 500 | 300 | 53 |
| 150 | 6 | 380 | 335 | 580 | 550 | 335 | 66 |
| 200 | 8 | 495 | 420 | 690 | 650 | 420 | 110 |
| 250 | 10 | 595 | 500 | 800 | 775 | 500 | 165 |
| 300 | 12 | 640 | 580 | 950 | 900 | 580 | 225 |
| 350 | 14 | 700 | 640 | 1150 | 312 | ||
| 400 | 16 | 800 | 700 | 1360 | 500 | ||
| 450 | 18 | 850 | 790 | 1480 | 700 | ||
| 500 | 20 | 900 | 875 | 1650 | 900 |

Model:
SBL14P-16C/SBL14P-25C/SBL14P-40C/SBL14R-16P/SBL14R-25P/SBL14R-40PSpecification:
DN25-DN600Pressure:
PN16~PN40Material:
Cast Steel,stainless steel
Model:
GL41P-150LB/GL41P-300LB/GL41P-600LB/GL41W-150LB/GL41W-300LB/GL41W-600LBSpecification:
DN15-DN200Pressure:
PN15~PN150Material:
Forged Steel,Forged Stainless Steel
Model:
GLT41F46-16C/GLT41F46-25C/GLT41F46-16P//GLT41F46-25PSpecification:
DN50-DN600Pressure:
PN16-PN25Material:
Cast Steel,Stainless Steel,PTFE