Parker 针阀
Parker Needle Valves
针型流量控制阀Needle Flow Control Valves

派克可提供基本的针阀及带反向旁路单向阀的针阀, 针阀是无压力补偿的可调节流阀, 派克提供的大规格针阀的通流能力达 60 gpm (225 Lpm), 工作压力可达 6000 psi (420 bar)。 Parker offers standard needle valves and needle valves with a reverse free-flow check. Parker's needle valves are non-compensated adjustable orifices capable of flows up to 225 lpm (60 gpm) and pressures as high as 420 bar (6000 psi).

派克的针阀系列具有高度耐污染的设计，允许通过手动调节进行精细计量，以创建和调节流量。 这些阀可以在液压系统流量高达225 lpm和压力高达420 bar的情况下运行，并且可以选择集成反向自由流止回阀。 派克的针型阀或针型止回阀是汽缸或电机控制和/或放气应用的理想选择，适用于广泛的市场，例如农业，建筑，物料搬运，工业，石油和天然气等。 Parker's family of needle valves feature a highly contamination tolerant design that allows for fine metering with manual adjustment to create and orifice and control flow. These valves can operate with hydraulic system flows as high as 225 lpm and pressures up to 420 bar with the option of an integrate reverse free-flow check valve. Parker's needle valves or needle-check valves are ideal for cylinder or motor control and/or bleed-off applications within a broad range of markets, such as the agriculture, construction, material handling, industrial, oil & gas, and several more.

针型流量控制阀 Needle Flow Control Valves

市场Markets:

- Agriculture
- Construction Equipment
- Material Handling Equipment
- Miscellaneous Industrial
- Miscellaneous Mobile
- Oil & Gas
-农业
-建筑设备
-物料搬运设备
-杂项工业
-杂项移动
-油气

特点/优势Features/Benefits:

- High flow capacity from a small cavity
- Manual shutoff with extremely low leakage
- Fine adjustment control/sensitivity
- Very tolerant to contamination
- Tamperproof options available
- Free-flow reverse check available
- All external parts zinc plated
-通过小腔体实现高流量
-手动关闭，泄漏极低
-精细调节控制/灵敏度
-非常耐污染
-提供防篡改选项
-提供自由流反向检查
-所有外部零件均镀锌

应用Applications:

- Accumulator bleed-off
- Motor speed control
- Cylinder speed control
-蓄能器放气
-电动机速度控制
-气缸速度控制

其他技术洞察Additional Technical Insight:

针阀为需要基本调节液压流量的应用提供了经济的解决方案。阀内的有效孔口尺寸可通过调节螺钉或旋钮来改变，并且可以通过添加可选的盖使阀具有防篡改功能。当阀门完全关闭时，可以实现关闭。设置好调整后，阀门将充当固定孔。像所有固定孔一样，任何压力变化都会引起流量变化。如果需要恒定流量而不管系统压力或负载压力如何，请考虑使用派克的压力补偿流量控制器。派克的J02A2，NVH081，NVH101和J06A2插装阀是标准的2通针型阀，具有微调选项。孔板将在两个方向上计量，但从端口2到1的流量是优选的。如果需要无限制的回流，则这些针型阀将需要使用额外的止回阀。派克还提供带有内部反向自由流检查功能的J02B2，FV101和FV102针形阀，以减小歧管尺寸和组件数量。Needle valves offer economical solutions for applications that require basic adjustable control of hydraulic flow. The effective orifice size inside the valve is varied with screw or knob adjustments and the valve can be made tamper resistant with the addition of an optional cap. Shutoff can be achieved when the valve is adjusted completely closed. Once the adjustment is set, the valve acts as a fixed orifice. Like all fixed orifices, any changes in pressure will cause changes in flow. If constant flow is required regardless of system or load pressure, please consider Parker's pressure compensated flow controls. Parker's J02A2, NVH081, NVH101, and J06A2 cartridges are standard 2-port needle valves with fine adjustment options available. The orifice will meter in both directions, but flow from port 2 to 1 is preferred. If unrestricted reverse flow is required, an additional check valve will need to be used with these needle valve versions. Parker also offers J02B2, FV101, and FV102 needle valves with internal reverse free flow checks in order to reduce manifold size and component quantities.

Technical Specifications

Needle Flow Control Valves 型号