Sun Hydraulics CNFEXAN 单向阀-产品快照
- 品牌:
- Sun Hydraulics
- 型号:
- CNFEXAN
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| 供应商名称 | 电话 | 备注 |
|---|---|---|
| 上海萨弗工控设备有限公司 | 021-51095192 | |
| 上海伦萨液压设备有限公司 | 021-69008526 | |
| 升旭液压系统有限公司 | 021-51162862 | |
| 橡达油压机械（上海）有限公司 |
产品介绍
Sun Hydraulics CNFEXAN 单向阀
CNFEXAN - Pilot-to-close check valve with bypass orifice
Sun Hydraulics
This valve is a spring biased closed, pilot-to-close check cartridge with a bypass orifice. It incorporates a steel seat and is non-vented. The valve allows flow from port 1 to port 2 and restricts flow from port 2 to port 1. Pressure at the pilot (port 3) opposes pressure at port 1 at a ratio of 1.8:1. Pressure at port 2 directly opposes the pilot pressure. Note: The bypass orifice diameter is specified by the customer. See Technical Data below for the allowable orifice range. Features hardened steel seats for excellent wear characteristics and contamination tolerance. Nominal pilot ratio is 1.8:1. This means that a pressure of 1000 psi (70 bar) at the pilot port will close a valve against a pressure of 1800 psi (125 bar) at port 1. Any decay or loss of pilot pressure could allow the valve to open, even if it is a momentary decay or loss. Pressure at the port 2 area directly opposes pilot pressure. With equal pressures at all ports the valve is closed. Incorporates the Sun floating style construction to minimize the possibility of internal parts binding due to excessive installation torque and/or cavity/cartridge machining variations. Cavity T-2A Series 2 Capacity 40 gpm160 L/min. Pilot Ratio 1.8:11.8:1 Orifice Range .016 - .127 in.0,4 - 3,2 mm Valve Hex Size 1 1/8 in.28,6 mm Valve Installation Torque 45 - 50 lbf ft61 - 68 Nm Seal kit - Cartridge Viton: 990-202-006 Show FAQ How big is a drop of hydraulic oil? There are exactly 250 Sun drops in a cubic inch or 15 in a cc. Direct acting or pilot operated - what do I use? Direct-acting valves are used to prevent over pressure, and pilot-operated valves are used to regulate pressure. If you are unsure, use a direct-acting valve. Sun's direct acting valves are very fast, dirt tolerant, stable, and robust. Sun's pilot-operated valves are moderately fast, they have a low pressure rise vs. flow curve, and they are easy to adjust. I need to discharge a large accumulator. How can I increase the capacity of my discharge circuit? Because of the very high ratio, the COFO has limited capacity. The discharge path is across a .050 inch (1,3 mm) diameter orifice. If you have large accumulators combined with low precharge pressures, this may not discharge the energy quickly enough. Using the COFO XDN cartridge in conjunction with an LODA XDN will provide capacity for larger applications. Related Files Technical TipsManufacturing Sun Cartridge Cavities (522.27 KB) Sun's Floating Style Screw-In Cartridge (719.9 KB) Sun Model Code Explanation; 999-901-334 (343.9 KB)
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