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Wenzhou Meric Hydraulic Technology Co.,Ltd
Pilot-operated check valve MCOHA series

Pilot-operated check valve MCOHA series

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Pilot-operated check valve MCOHA series

Product catalog summary

Technical Specifications

Operating Pressure: 350 BAR
Flow: 320 L/min
Pilot Ratio: 1.8:1
Internal Leakage: 0.07 ml/min max at operating pressure
Temperature Range: -30°C to +120°C (-22°F to +250°F)
Cavity: T-17A
Fluids: Mineral-based fluids with viscosities of 7.4 to 420 cSt

Product Features

The nominal pilot ratio is 1.8:1, meaning a pilot pressure of 1000 psi (70 bar) can counteract a pressure of 1800 psi (125 bar) at port 1. Any decay or loss of pilot pressure could allow the valve to open.
Pressure at port 2 directly opposes pilot pressure.
Reverse flow from port 2 to port 1 is not possible under any condition.

Operation

This valve is a spring-biased closed, pilot-to-close check cartridge with a 1.8:1 pilot ratio. It allows flow from port 1 to port 2 and blocks reverse flow. Pressure at the pilot port opposes pressure at port 1 at a ratio of 1.8:1. It is commonly used in regeneration circuits.

Performance Curve

The performance curve illustrates the pressure drop versus flow rate, indicating how the valve performs under different flow conditions.

Installation Dimensions

Detailed dimensions and torque specifications are provided for proper installation.

Order Type

Adjustment: Nonadjustable
Cracking Pressure: Options range from 1 psi (0.07 bar) to 150 psi (10.5 bar)
Seal-Kits: Buna N or Viton
Body Material: 6061-T6 aluminum (207 Bar) or steel (350 Bar)
Body Porting: Various options including SAE and NPT

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 check valve MCOHA series-1

机能符号 Symbol Pilot Check Valve 技术参数 Specifications ·工作压力 Operating Pressure 350BAR ·流量 Flow 320L/min ·先导比 Pliot Ratio 1.8:1 ·内泄漏 Internal Leakage 0.07ml/min.max.at operating pressure ·温度 Temperature -30°C to +120°(-22°F to+250°F) ·插孔 Cavity T-17A ·流体 Fluids Mineral-based fluids with viscosities of 7.4 to 420 cSt. ·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。 Nominal pilot ratio is 1.8:1. This means that a pressure of 1000 psi (70 bar) at the pilot port will close a valve against a pressure of 1800 psi (125 bar) at port 1. Any decay or loss of pilot pressure could allow the valve to open, even if it is a momentary decay or loss. ·2口的压力直接反作用于先导压力。 Pressure at the port 2 area directly opposes pilot pressure. ·在任何情况下，反向流量从2口流向1口都是不可能的。 Reverse flow through the valve from port 2 to port 1 is not possible under any condition. 产品特性 Features 压力降 PRESSURE DROP psi(bar) 压力-流量性能曲线 Performance Curve Pressure Drop vs.Flow

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Pilot-operated check valve MCOHA series-2

安装尺寸 INSTALLATION DIMENSIONS 订购型号 Order Type Ⅰ Ⅱ Ⅲ Ⅰ. 调节方式 adjustment X=不可调整 Nonadjustable Ⅱ. 开启压力 Cracking Pressure A=4psi(0.3bar) B=15psi(1bar) C=30psi(2bar) D=50psi(3.5bar) E=75psi(5bar) F=100psi(7bar) G=150psi(10.5bar) Z=1psi(0.07bar) 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 rated at 350Bar

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Pilot-operated check valve MCOHA 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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Pilot-operated check valve MCOHA series

Pilot-operated check valve MCOHA series

Catalog excerpts

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