电比例 溢流 阀 - 无命令时最高压力设定

流量: 25 gpm95 L/min. | 插孔: T-13A
RPEI : 电比例  溢流 阀 - 无命令时最高压力设定
技术特性 [ + ]

这种2口的先导式溢流阀是电液比例控制,常闭型压力调节阀。这款阀是通过弹簧初始设定在最高压力(按照客户要求)。随着线圈电流的加大,将会按照比例,线性地降低压力设定值。当1口(进油口)的压力足以克服弹簧力和电磁力(由模拟信号决定)的差值时,阀芯将会打开,液压油将会从1口流向2口(出油口)。

  • 该类阀的所有配置均配备锌-镍镀层,能够提供1000小时盐雾保护。
  • 线圈插头提供最高IP69K防护等级,详细信息见线圈产品页。
  • 该阀适用于740系列低功率或者高功率线圈,以及747系列防爆线圈。
  • 设定值代表的是最高溢流压力,即没有任何输入信号的时候的默认压力。当信号增加时,溢流设定值将会降低。请参照对应压力范围的性能曲线。
  • 改变比例阀的输入信号将提供无极变化的控制压力。
  • 带有阻尼的结构保证了产品在大范围的调节过程中具有了稳定的性能
  • 为了优化性能,应当使用具有电流反馈和可调颤振的放大器。颤振频率调节范围应当达到100 - 250 Hz。
  • 推荐的安装方位为线圈水平或者竖直方向(线圈朝下),如果需要线圈朝上方式安装,就必须满足油液高度高于螺线管高度,以防止螺线管里面空气排不出。请不要在阀还未安装的情况下手动或得电操作阀芯。
  • 该阀与SUN的可扩展移动控制器XMD完全匹配。
  • 线圈可以双向安装到螺线管上。
  • 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。
比例性能数据 [ + ]
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。
滞环(在颤振作用下) A-Range: 9%, W-Range: 10%A-Range: 9%, W-Range: 10%
线性度(在颤振作用下) A-Range: 3%, W-Range 5%A-Range: 3%, W-Range 5%
Repeatability (with dither) 3%3%
推荐颤振频率 110 Hz110 Hz
名义死区(一定的输出) 35%35%
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-13A
系列 1
通流能力 25 gpm95 L/min.
最大操作压力 5000 psi350 bar
工厂默认的设定值 4 gpm15 L/min.
110 SUS (24 cSt)下的最大泄漏 2 in³/min.@1000 psi30 cc/min.@70 bar
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 1/8 in.3,2 mm
Locknut Hex Size 7/16 in.11,1 mm
Locknut Torque 45 - 55 lbf in.5 - 6 Nm
型号重量 .55 lb0,25 kg
美国专利号# 10,775,81210,775,812
Seal and nut kit - Coil Viton: 990740006
Seal kit - Cartridge Buna: 990010007
Seal kit - Cartridge Viton: 990010006
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.

The kick-down relief acts much like a circuit breaker. When the pressure at the inlet (port 1) of the relief valve rises to the setting, the valve pops open and drops the pressure down to 100 psi or so. The valve stays open until flow through it stops. Shutting off the supply of oil will reset the valve; reversing pressure on the valve is a positive way of resetting it.

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.

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。

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.
备注 [ + ]
  • 当选择Sun阀块时,请检查插装阀的间隙要求。不同的阀控制方式以及线圈要求的间隙不一样。
  • 在阀的最大尺寸之外需增加额外的2.00 inches (50,8 mm),以进行线圈的安装和移除。
额外来源 [ + ]
集锦
技术指导
技术信息
Coil Information [ + ]

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