Pilot-operated relief valve MRPCC series

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Pilot-operated relief valve MRPCC series

Product catalog summary

Technical Specifications

Operating Pressure: 350 BAR
Flow Rate: 45 L/min
Response Time: 10 ms
Internal Leakage: 30 ml/min max at 70 bar
Temperature Range: -40°C to +120°C (-40°F to +250°F)
Cavity: T-162A
Fluids: Mineral-based fluids with viscosities of 7.4 to 420 cSt

Product Features

Main stage orifice is protected by a stainless steel screen.
Back pressure on the tank port (port 2) is directly additive to the valve setting at a 1:1 ratio.
Will accept maximum pressure at port 2; suitable for use in cross port relief circuits. Consider spool leakage if used in such circuits.

Operation

Pilot-operated, balanced-piston relief cartridges are normally closed pressure regulating valves. When the pressure at the inlet (port 1) reaches the valve setting, the valve opens to the tank (port 2), throttling flow to regulate the pressure. These valves are accurate, have low pressure rise vs. flow, are smooth and quiet, and have moderate response speed.

Installation Dimensions

Includes performance curve for pressure drop vs. flow and typical pressure rise. Torque specifications are provided for installation.

Order Type

Adjustment: Screw or Handwheel
Pressure Range: Various options from 75-6000 psi (5-420 bar) with preset values
Seal Kits: Buna N or Viton
Body Material: 6061-T6 aluminum or steel
Body Porting: SAE 8T, G1/4, NPT1/4, and other options available

Application Areas

Transmission, engine, and powertrain control
Building and road construction equipment
Agricultural and garden machinery
Forestry and resource management equipment
Waste disposal equipment
Other professional mobile and industrial applications

Catalog excerpts

Pilot-operated relief valve MRPCC series-1

机能符号 Symbol 先导式溢流阀 Pilot-operated Relief Valves 技术参数 Specifications ·工作压力 Operating Pressure 350BAR ·流量 Flow 45L/min ·额定响应时间 Response Time - Typical 10ms ·内泄漏 Internal Leakage 30ml/min.max.at 70bar ·温度 Temperature -40°C to +120°(-40°F to+250°F) ·插孔 Cavity T-162A ·流体 Fluids Mineral-based fluids with viscosities of 7.4 to 420 cSt. 产品特性 Features ·主级的阻尼孔被不锈钢滤网保护。 Main stage orifice is protected by a stainless steel screen. ·油箱口（口2）处的背压直接以1:1的比例增加到阀的设定值上。 Back pressure on the tank port (port 2) is directly additive to the valve setting at a 1:1 ratio. ·可在口2接受最大压力；适合应用在交叉端口的溢流油路中。如果应用在交叉端口的溢流油路中，请考虑滑阀泄漏。 Will accept maximum pressure at port 2; suitable for use in cross port relief circuits. If used in cross port relief circuits, consider spool leakage. 压力达到阀设定值，阀开始向油箱（口2）溢流，节流以调节压力。此类阀压力调节精度高，压力波动随流量变化小，并且调节平稳，噪声小，响应速度适中 Pilot-operated, balanced-pist

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Pilot-operated relief valve MRPCC series-2

安装尺寸 INSTALLATION DIMENSIONS HEX 4 压力-流量性能曲线 Performance Curve Pressure Drop vs.Flow 压力降 PRESSURE DROP psi(bar) 订购型号 Order Type Ⅰ Ⅱ Ⅲ Ⅰ. 调节方式 adjustment L=螺钉调整 Screw Adjust K=手轮调整 Handwheel Adjust Ⅲ. 油封 Seal- Kits N=丁腈橡胶 Buna N V=氟橡胶 Viton Ⅳ. 阀块材质 BODY MATERIAL A=6061- T6铝耐压强度207Bar 6061- T6 aluminum alloy rated at 207Bar S=钢材耐压强度350Bar steel r

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Pilot-operated relief valve MRPCC series-3

应用领域 AP P L I CATI ON ARE A · 传输、发动机和动力传动控制 Transmission, engine and powertrain control · 建筑和道路建设设备 Building and road construction equipment · 农业和园林机械 Agricultural and garden machinery · 林业和资源管理设备 Forestry and resource management equipment · 废弃物处理设备 Waste disposal

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