先导关闭 单向阀 带旁通节流孔

流量: 40 gpm160 L/min. | 插孔: T-2A
CNFE : 先导关闭 单向阀 带旁通节流孔
技术特性 [ + ]

此阀为弹簧偏置关闭带旁路节流孔的先导关闭单向阀。它具有钢质阀座并且为非透气型。它允许液流从口1向口2自由流动,口2到口1节流。先导口(口3)的压力以1.8:1的比率对抗口1压力。口2压力将直接抵抗先导压力。注意:旁路节流孔的直径由客户指定。参考下面的技术数据以便选取可行的节流孔范围。

  • 淬火钢特性的底座将有更好的耐磨性以及抗污染能力。
  • 名义先导比为1.8:1。这意味着先导压力为1000psi(70bar),可以抵消1800psi(125bar)的1口压力。不管先导压力衰退或者消失,即便是非常短暂,阀亦会打开。
  • 2口的压力直接反作用于先导压力。
  • 当阀关闭时,所有口的压力都相等。
  • Sun浮动式的结构可以最大限度地减少由于过大的安装扭矩以及孔型加工的误差所造成的干涉现象。
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-2A
系列 2
通流能力 40 gpm160 L/min.
先导比 1.8:11.8:1
小孔尺寸 .016 - .127 in.0,4 - 3,2 mm
阀头部安装六角尺寸 1 1/8 in.28,6 mm
阀安装扭矩 45 - 50 lbf ft61 - 68 Nm
Seal kit - Cartridge Buna: 990202007
Seal kit - Cartridge Polyurethane: 990002002
Seal kit - Cartridge Viton: 990202006
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.

Because of the very high ratio, the COFO has limited capacity. The discharge path is across a .050 inch (1,3 mm) diameter orifice. If you have large accumulators combined with low precharge pressures, this may not discharge the energy quickly enough. Using the COFO XDN cartridge in conjunction with an LODA XDN will provide capacity for larger applications.

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 [ + ]