直动式 溢流阀 - 在单向阀前

流量: 10 gpm40 L/min. | 插孔: T-11A
HRDA : 直动式 溢流阀 - 在单向阀前
技术特性 [ + ]

在单向阀前的溢流阀是一种复合型阀,此阀在单向阀功能前并入了直动式溢流阀。当压力在进口(口2)达到阀的设定值,阀开始向油箱(口3)溢流,节流以限制压力上升。单向阀流量为进口(口2)到系统口(口1)。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。

  • 注意!该阀偏离正常的溢流阀流道,不能与Sun现存的溢流阀阀块一起工作。
  • 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。
  • 选择溢流阀的弹簧范围时,为确保最大的可重复性,目标溢流设定值要接近最小和最大压力的中间范围。
  • 适合使用在负载锁紧应用中。
  • 此阀的单向阀功能部分最大泄漏速率不超过1滴/分钟(0,07 cc/min)。
  • 此双功能阀一方面可以在单个或多泵油路中提供泵隔离和溢流保护作用。另外此阀可以在蓄能器感应,泵卸荷油路中作为主级阀使用。
  • 直动式溢流阀具有快速响应特性,从而减少压力冲击并可提供低的回座泄漏(在开启压力的85%时低于5滴/分钟(0,3 cc/min)),单向阀泄漏小于1滴/分钟(0,07 cc/min)。
  • 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-11A
系列 1
通流能力 10 gpm40 L/min.
工厂默认的设定值 4 gpm15 L/min.
最大操作压力 5000 psi350 bar
回座时最大泄漏 5 drops/min.0,3 cc/min.
单向开启压力 25 psi1,7 bar
额定响应时间 10 ms10 ms
Adjustment - No. of CW Turns from Min. to Max. setting 66
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 .35 lb0,15 kg
Seal kit - Cartridge Buna: 990011007
Seal kit - Cartridge Polyurethane: 990011002
Seal kit - Cartridge Viton: 990011006
性能曲线 [ + ]
常见问题 [ + ]

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.

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

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 [ + ]