防冲击, 先导式, 平衡锥阀 溢流阀

流量: 200 gpm760 L/min. | 插孔: T-18A
RPKT : 防冲击, 先导式, 平衡锥阀 溢流阀
技术特性 [ + ]

先导控制式软启动溢流阀不仅限制最大系统压力而且可以起到限制压力上升速度的作用。此类阀打开后以恒定速度关闭,这与阀的设定和流量大小无关.调节螺杆决定了最大设定(溢流)和最小设定(门限压力)。

  • 可在口2接受最大压力;适合应用在交叉端口的溢流油路中。
  • 调节螺杆的密封暴露在系统压力下。这意味着只有当压力被移除时,此阀才可被调节。设定流程为;检查设定,移除压力,调节阀,检查新设定。
  • 不适合使用在负载锁紧应用中。
  • 当进口(口1)压力超过门限设定时,阀打开到油箱(口2)。先导部分以稳定速率向前移动,压缩先导弹簧并增加设定值。当先导部分到达机械限位时,阀达到最大设定值。
  • 此阀为泵和马达提供由负载突变引起的压力冲击保护,特别是变量泵,因为变量机构动作不能跟踪上压力冲击。
  • 此阀可减少由突然换向引起的冲击,为静压驱动装置提供保护。此阀适合交叉端口溢流应用。
  • 当与换向装置一起使用时,此阀可提供比例阀具有的斜坡特性。
  • 可用软溢流阀启动小泵站,从而提高泵的寿命。
  • 油箱口(口2)处的背压直接以1:1的比例增加到阀的设定值上。
  • 所有2口溢流阀(除了先导溢流阀)在尺寸和功能上可互换(如:给定的外形结构尺寸阀拥有相同的流道,相同的插孔)。
  • 利用Sun浮动结构减少由于过量安装扭矩或插孔/插装阀加工误差带来的内部零件粘结的可能性。
技术数据 [ + ]
注意:技术参数可能因产品配置而不同。请查看产品配置部分。
插孔 T-18A
系列 4
通流能力 200 gpm760 L/min.
最大操作压力 5000 psi350 bar
工厂默认的设定值 4 gpm15 L/min.
控制先导流量 10 - 25 in³/min.0,16 - 0,41 L/min.
压力上升时间 400 - 600 ms400 - 600 ms
额定响应时间 2 ms2 ms
调节 - 从最小设定到最大设定的顺时针圈数 4.54.5
阀头部安装六角尺寸 1 5/8 in.41,3 mm
阀安装扭矩 350 - 375 lbf ft474 - 508 Nm
调节螺栓的内六角尺寸 5/32 in.4 mm
锁紧螺母六角尺寸 9/16 in.15 mm
锁紧螺母力矩 80 - 90 lbf in.9 - 10 Nm
型号重量 2.50 lb1,15 kg
美国专利号# 6,039,0706,039,070
Seal kit - Cartridge Buna: 990318007
Seal kit - Cartridge Viton: 990318006
性能曲线 [ + ]
常见问题 [ + ]

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.

设置压力的误差在产品的性能参数页中都有详细说明,您可以通过点击可选产品网页中的更多产品信息到达产品性能参数页面。

One graphic example is on a portable grain auger for silos. When the farmer gets caught in the auger the kick-down relief trips and allows him to escape.

There are exactly 250 Sun drops in a cubic inch or 15 in a cc.

Maybe not. We build in a good amount of overlap in the kick-down reliefs to prevent false tripping. This means they are not as fast as our standard pilot operated reliefs. A direct-acting relief valve set just above the kick-down relief valve would be good insurance.

Only external seals are serviceable.  Sun offers replacement seal kits for all cartridge models. The applicable kit part number can be found in the product page's Technical Data table or by using our Cartridge Seal Kit search function located under Accessories. Please note: Converting the external seals from one material to another does not ensure fluid compatibility with that material due to the existence of internal seals within the cartridge.
额外来源 [ + ]