单向节流阀，MK/MG20
产品概述
单向节流阀MK/MG20是一种液压控制元件，兼具节流与单向阀功能，适用于需要精确调节流体流量并限制单向流动的液压系统。该产品采用直通式管式安装设计，结构紧凑，操作便捷，广泛应用于冶金、机床、工程机械等领域。其核心特点是双向节流能力（MG型）或单向节流与自由反向流通能力（MK型），能够有效平衡系统压力与流量需求。138
技术特点
MK/MG20系列采用轴向三角槽节流口设计，通过旋转调节套实现流量无级调节，调节范围广且稳定性高。MK型单向节流阀在正向流动（B→A）时通过节流口控制流量，反向流动（A→B）时单向阀自动开启，确保流体无阻碍通过。MG型则支持双向节流功能，适用于双向流量控制场景。阀体采用高强度耐腐蚀材料，工作压力可达31.5MPa，适应矿物油或磷酸酯等介质，油温范围为-30℃至+80℃，粘度兼容性为10~800mm²/s。2411
应用场景
该产品主要用于液压系统中执行元件的速度控制，例如油缸的进退调速或马达的转速调节。通过与溢流阀配合，可构成进口、出口或旁路节流调速回路，适用于负载变化平缓或速度稳定性要求适中的工业场景，如钢铁厂轧机、水泥生产线、煤矿机械等。其自我清洁设计（MK型环形缝隙）可减少沉积物堆积，延长使用寿命。5918
Product Overview
The MK/MG20 one-way throttle valve is a hydraulic control component integrating throttle and check valve functions, designed for precise fluid flow regulation and unidirectional flow restriction in hydraulic systems. With a straight-through threaded installation, it features compact structure and easy operation, widely used in metallurgy, machine tools, and construction machinery. The MG type supports bidirectional throttling, while the MK type combines throttling in one direction and free flow in the reverse direction, ensuring balanced system performance.120
Key Features
The MK/MG20 series employs an axial triangular-groove throttle orifice, enabling stepless flow adjustment via a rotating sleeve. The MK valve throttles flow in the forward direction (B→A) while allowing unrestricted reverse flow (A→B) via its integrated check valve. The MG valve regulates flow bidirectionally. Constructed with high-strength corrosion-resistant materials, it withstands pressures up to 31.5MPa, compatible with mineral oils or phosphate esters at temperatures from -30℃ to +80℃ and viscosities of 10~800mm²/s. Its robust design ensures reliability in harsh environments.48
Applications
Ideal for controlling actuator speeds (e.g., cylinder movement or motor rotation), this valve forms throttle circuits with relief valves for inlet, outlet, or bypass flow regulation. Typical applications include steel rolling mills, cement production lines, and mining equipment. The MK type’s self-cleaning annular gap minimizes deposit accumulation, enhancing durability in medium-pollution fluids (NAS1638 Grade 9 recommended).61419
简单介绍
MK/MG20 单向节流阀该阀可以双向节流。油通过旁 孔(3)流向阀体(2)和可调节套向(1)之间形成的节流口(4)。
MK/MG20 单向节流阀
的详细介绍
MK/MG20 单向节流阀
通径（NG）8至30 压力至31.5Mpa 流量至400L/min MG6.MG8.MG10.MG15.MG20.MG30
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MK型单向节流阀从通径6至通径30共7个规格。
当压力油从锥阀背面流入时，它作为节流阀使用，
若从相反方向 流入时，它作为单向阀使用，这时由于
有部分油液可在环形缝隙中流动，可以清除节流口上
的沉积物。MG型(节流阀)
该阀可以双向节流。油通过旁 孔(3)流向阀体(2)和可
调节套向(1)之间形成的节流口(4)。转动套筒(1)能够
改变节流断面。MK6.MK8.MK10.MK15.MK20.MK30节流阀
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