PDF《LCKCB》

D-55 LCKCB A cartridge-style Pilot to open, poppet-type check valve 锥阀式液控单向阀 SYMBOL The valve has a non-sealed pilot.

It allows free flow from port ② to port ① and blocks flow from port ① to port ② or holding a load. Flow will be allowed from port ① to port ② when pressure is applied to pilot ③ . This pilot operated check valve has a

3 to

1 pilot ratio, meaning that is required at pilot ③ to open the valve. 此阀具有非密封导压.当在②口的压力超过开启压力,②到①开启:在反方向,①到 ②关闭;

当在③口所需的液压力达到①口负载的 1/3 时,阀芯打开,①和②通,液控比为 3:1. 压力 C 流量曲线 PRESSURE DROP VS.FLOW 工作 OPERATION 说明 DESCRIPTION 工作压力(Operating Pressure): 350bar 流量(Flow): See PRESSURE DROP VS.FLOW graph. 内泄漏(Internal Leakage):

1 drops/min.(滴/分) max. at 350bar 开启压力(Crack Pressures): C=2.0bar A=0.3bar B=1.0bar D=3.5bar E=5.0bar F=7.0bar 控制比(Pilot Ratio): 3:1 温度(Temperature): -40°F to +250°F(-40°C to +120°C) 过滤(Filtration): See page (参见) N-1 油液(Fluids): Mineral-based fluids with viscosities of 7.4 to

420 cSt.(矿物油粘度) 插孔(Cavity): SUN T-11A,See page M-6 阀块材料(Body Material): Steel & Ductile iron rated to 350bar 钢和球铁允许使用最大压力350bar 技术参数 SPECIFICATIONS 46cSt oil @ 40°C 液控单向阀 ( 标准导压 ) D-56 订货代号 TO ORDER 功能 LCK= 液控单向阀 Pilot to Open Check Valve 类型 B= 标准导压型 Standard Pilot 控制方式 Control X= 常规 Standard Pilot

1 3

4 65 34.9 ???? 45-50Nm TORQUE (22.2)HEX Unit=Millimeters 安装尺寸 INSTALLATION DIMENSIONS 阀块油口 Body Porting 空白 Blank= 不带阀块 None 6T=SAE6 8T=SAE8 3G=G 3/8 4G=G 1/2

7 阀块详见章节 K-17DK-22 其它螺纹油口也是可选择的 Other Porting is Available

1 7

3 2

4 5

6 LCK C B C X 流量 Flow C=60L/min

2 开启压力 Cracking Pressure C=2bar(30psi) A=0.3bar(4psi) B=1bar(15psi) D=3.5bar(50psi) E=5bar(75psi) F=7bar(100psi)

5 油封 Seal Kits N= 丁晴橡胶 Buna N V= 氟橡胶 Viton 6