气控, 先导式, 平衡滑阀 溢流阀

流量: 200 gpm760 L/min. | 插孔: T-18A
RPKD : 气控, 先导式, 平衡滑阀 溢流阀
技术特性 [ + ]

气控先导平衡滑阀结构溢流阀利用压缩空气作用在隔膜上以代替可调节弹簧来控制压力设定。空气信号供给是通过阀的六角螺母部位的导气口进行。此类阀为常闭压力调节阀。当进口(口1) 压力达到阀设定值,阀开始向油箱(口2)溢流,节流以调节压力。此类阀压力调节精度高,压力波动随流量变化小,并且调节平稳,噪声小,响应速度适中。

  • 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)。
  • 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。
  • 最大空气压力不能超过150 psi (10 bar)。
  • 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 2000 psi140 bar
先导比 20:120:1
110 SUS (24 cSt)下的最大泄漏 5 in³/min.@1000 psi80 cc/min.@70 bar
最大空气压力 150 psi10,5 bar
额定响应时间 10 ms10 ms
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
型号重量 2.50 lb1,15 kg
Seal kit - Cartridge Buna: 990018007
Seal kit - Cartridge Polyurethane: 990018002
Seal kit - Cartridge Viton: 990018006
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 [ + ]