FRH44J,FRH44F46,FRH44PFA Rubber Lined Swing Disc Check Valve
FREE-VALVE rubber lined swing disc check valve is a type of one-way valve that can automatically prevent the backflow of media in the pipeline. Its valve disc rotates around the spindle under the action of fluid pressure to achieve opening and closing. When the inlet pressure is higher than the outlet, the valve opens and the medium flows through.
FREE-VALVE rubber lined swing disc check valve is a type of one-way valve that can automatically prevent the backflow of media in the pipeline. Its valve disc rotates around the spindle under the action of fluid pressure to achieve opening and closing. When the inlet pressure is higher than the outlet, the valve opens and the medium flows through. When the inlet pressure is lower than the outlet pressure, the valve plate automatically closes and the medium cannot flow backward.By changing the material of its rubber lining, this type of valve can be adapted to various corrosive media and is widely used in industries such as petroleum, chemical, water supply, and food.

Features
- The disc is designed as a wholewith special
- Easy to install,the valvecan be used for horizontal and vertical installation.
- The channel is in a flow line shapein the valve, and the flow resistance is smaller than that of the lift check valve.
- The lining material is optional, which can be applied to a variety of media ,the valve has good corrosion resistance.
Technical Specification:
- Size Range: DN32~DN500
- Applicable Temperature:-20~120℃
- Connection Type: Flange
- Lined material:NBR,EPDM,F46,PFA
- Test standard:GB/T13927,API598
- Flange To Flange:ANSI10,GB/T12221
- Model:FRH44J,FRH44F46

Service Temperature and suitable media of body lining material
| Lining material | Service temperature,°C | Application medium |
| NR | -10°C~+85°C | exclusive of strong oxidants:fluorosilicic acid, phenolic acid, 30 percent sulfuric acid, 80 percent phosphoric acid, alkali, salt, gold plating solution, sodium hydroxide, potassium hydroxide, neutral salt aqueous solution, 10 percent sodium hypochlorite, ammonia, most alcohols, organic acids and aldehydes,ect |
| EPDM | ≤120°C | It has the similar acid and alkaline properties of natural glue, and it is very good for low pressure steam, hot water and cold water. |
| PTFE(F4) | ≤180°C | Strong acid, strong base, strong oxidant, organic solvent, etc |
| FEP(F46) | ≤120°C | Any organic solvents or reagents, xi or concentrated inorganic acids, bases, ketones, aromatics, chlorinated hydrocarbons, etc |
| PFA | ≤180°C | Strong acid,strong alkali,Strong oxidant, organic solvent, etc |

Main outline and connection dimensions
| DN | PN | L | D | D1 | D2 | n-∅d | Working Pressure |
| 20 | PN10 | 160 | 105 | 75 | 55 | 4-∅14 | 1.0MPa |
| 25 | PN10 | 160 | 115 | 85 | 65 | 4-∅14 | |
| 32 | PN10 | 180 | 140 | 100 | 78 | 4-∅18 | |
| 40 | PN10 | 200 | 150 | 110 | 85 | 4-∅18 | |
| 50 | PN10 | 230 | 165 | 125 | 100 | 4-∅18 | |
| 65 | PN10 | 290 | 185 | 145 | 120 | 4-∅18 | |
| 80 | PN10 | 310 | 200 | 160 | 140 | 8-∅18 | |
| 100 | PN10 | 350 | 220 | 180 | 155 | 8-∅18 | |
| 125 | PN10 | 400 | 250 | 210 | 185 | 8-∅18 | |
| 150 | PN10 | 480 | 285 | 240 | 210 | 8-∅22 | |
| 200 | PN10 | 500 | 340 | 295 | 265 | 8-∅22 | |
| 250 | PN10 | 550 | 395 | 350 | 320 | 12-∅22 | 0.6MPa |
| 300 | PN10 | 698 | 445 | 400 | 370 | 12-∅22 | 0.4MPa |
| 350 | PN10 | 787 | 505 | 460 | 420 | 16-∅22 | |
| 400 | PN10 | 914 | 565 | 515 | 475 | 16-∅26 | |
| 450 | PN10 | 978 | 615 | 565 | 532 | 20-∅26 | |
| 500 | PN10 | 978 | 670 | 620 | 585 | 20-∅26 |
Note: Our company also produces other pressure grade products, flange connection size according to customer requirements according to AS4087,GB/T9113 or ASME B16.5.
Application:
FREE-VALVE rubber-lined swing check valve is a commonly used valve in pipeline systems that prevents backflow of the medium and relies on the medium’s own force to automatically open and close the valve disc.FRH44J Rubber Lined Swing Disc Check Valves are mainly used in water supply systems, petroleum, chemical and other industrial sector for anti-corrosive performance.