直动式 溢流阀, CE标记

流量: 19.8 gpm75 L/min. | 插孔: T-10A
RDDT : 直动式 溢流阀, CE标记
技术特性 [ + ]

直动式溢流阀为常闭压力限制阀,常用来保护液压元件,以防止其受瞬态压力的冲击。当压力在进口(口1)达到阀的设定值,阀开始向油箱(口2)溢流,节流以限制压力上升。此类阀调节平稳、噪声小,基本为零泄漏,抗油 污能力强,防堵塞并且响应速度快。CE标识阀是符合欧盟压力设备设计规范(PED)2014/68/EU要求的安全阀。阀的设定为过量操作压力,在此压力下阀打开。阀的流量性能可以从图中读出,它显示出取决于过量操作压力的阀流 量。作为PED一个要求规范,在最大流量时的系统压力不能超出过量操作压力10%以上。

  • 此类阀的标准预设值包括:A调节范围下:100 bar, 140 bar, 160 bar, 210 bar;W调节范围下:250 bar;C调节范围下330 bar。其他设定值可根据需要设定。
  • 目前Sun的溢流阀中只有RDDT和RDFT有CE标记。
  • 每单发货中都包含一个TÜV认证,它包括了过量操作压力和核准流量认证,一个EC合格证明和一个指导手册。
  • TÜV认证了从90 bar到422 bar的压力设定。
  • 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。
  • 此阀对变动的油液温度和油液污染不敏感。
  • 适合使用在负载锁紧应用中。
  • 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。
  • 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-10A
系列 1
通流能力 19.8 gpm75 L/min.
回座时最大泄漏 10 drops/min.0,7 cc/min.
额定响应时间 2 ms2 ms
复位 >90% of setting>90% of setting
Adjustment - No. of CW Turns from Min. to Max. setting 55
阀头部安装六角尺寸 7/8 in.22,2 mm
阀安装扭矩 30 - 35 lbf ft41 - 47 Nm
调节螺栓的内六角尺寸 5/32 in.4 mm
Locknut Hex Size 9/16 in.15 mm
Locknut Torque 80 - 90 lbf in.9 - 10 Nm
型号重量 .30 lb0,15 kg
Seal kit - Cartridge Buna: 990310007
Seal kit - Cartridge Viton: 990310006
性能曲线 [ + ]
常见问题 [ + ]

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.

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.

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 [ + ]