Sun Hydraulics COJCXEN 单向阀

Sun Hydraulics COJCXEN 单向阀-产品快照

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Sun Hydraulics
型号:
COJCXEN

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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

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产品介绍

Sun Hydraulics COJCXEN 单向阀

COJCXEN - Pilot-to-close check valve with external pilot port and port 3 blocked

Sun Hydraulics

This valve is a spring biased closed, pilot-to-close check cartridge that has a 1.8:1 pilot ratio. The valve allows flow from port 1 to port 2 and blocks reverse flow. Pressure at the external pilot port opposes pressure at port 1 at a ratio of 1.8:1. Port 3 is blocked. 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. Reverse flow through the valve from port 2 to port 1 is not possible under any condition. 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-19A Series 4 Capacity 160 gpm610 L/min. Pilot Ratio 1.8:11.8:1 Maximum Operating Pressure 5000 psi350 bar Maximum Valve Leakage at 110 SUS (24 cSt) 1 drops/min.0,07 cc/min. Valve Hex Size 1 5/8 in.41,3 mm Valve Installation Torque 350 - 375 lbf ft474 - 508 Nm Model Weight 2.60 lb1,20 kg Seal kit - Cartridge Viton: 990-019-006 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)

Home / Sun Hydraulics - COJCXEN - Pilot-to-close check valve with external pilot port and port 3 blocked

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