Description

METSO MC2-75-39A 250PSI UNMP0 Product Overview

In process industries,regulating the pressure and flow of fluids(liquids and gases)is a key component in maintaining process stability.The METSO MC2-75-39A 250PSI UNMP0 is a precision control valve for fluid systems!Designed by Metso specifically for medium-and high-pressure applications,this industrial-grade pneumatic control valve(the UNMP0 is the factory-installed standard model)boasts a 250PSI(1.72MPa)rated pressure suitable for applications such as chemical reactor feeding,oil and gas pipeline transportation,and power plant steam regulation.It controls the pneumatic actuator via a 4-20mA signal,precisely adjusting valve opening for stable flow and pressure control.It also integrates with the Metso DCS system to form a closed-loop”monitoring-control-feedback”system.Honestly,this valve is a reliable regulator in fluid control.Previously,conventional valves either failed to seal properly under high pressure(250 PSI)and leaked fluid,or had poor regulation accuracy,leading to process fluctuations.Since switching to the METSO MC2-75-39A 250 PSI UNMP0,these issues have completely disappeared.It also features a 316 stainless steel body,resistant to acid and alkali corrosion,and three times more durable than ordinary carbon steel valves.The UNMP0’s pneumatic actuator responds quickly,adjusting the valve opening in under one second when a 4-20 mA signal changes,50%faster than the previous actuator.Whether it’s corrosive chemical liquid pipelines or high-temperature power plant steam pipes,the METSO MC2-75-39A 250 PSI UNMP0 performs reliably.After all,it’s a Metso”hardware fluid control product”whose quality can withstand 24/7 operation.METSO MC2-75-39A 250PSI UNMP0 Technical Specifications

Technical Parameters

Parameter Valuesand Descriptions

Product Model

METSO MC2-75-39A 250PSI UNMP0

Manufacturer

Metso(Metso,Finland,a leading brand in fluid control and valves for process industries)

Product Type

Industrial-grade pneumatic control valve(linear/rotary,suitable for medium-and high-pressure fluid regulation)

Core Functions

Fluid flow/pressure regulation,4-20mA signal control,high-pressure sealing,corrosion and temperature resistance

Rated Pressure

250PSI(1.72MPa,Maximum Working Pressure:300PSI/2.07MPa)

Control Signal

4-20mA DC(for pneumatic actuator travel control);Feedback Signal:4-20mA DC(valve travel feedback,optional)

Valve Body Material

Main Body:316 Stainless steel(acid and alkali corrosion resistant);Seals:PTFE(polytetrafluoroethylene,low friction and heat resistant)

Operating temperature range:-20°C to+150°C(no derating,suitable for medium-temperature fluids)

Flow coefficient(Cv):7.5(depending on valve size,suitable for medium flow control needs)

Valve size:DN50(2-inch,suitable for most industrial pipe sizes)

Connection:Flange connection(ANSI 150#flange standard,compatible with industrial pipes)

Leakage rating:ANSI FCI 70-2 Class V(low leakage,≤0.01%of rated flow per hour)

Actuator type:Pneumatic diaphragm actuator(UNMP0 configuration,double-acting/single-acting selectable,output force:500N)

Positioning accuracy:±0.5%(valve opening control accuracy,ensuring precise fluid control)

Interference immunity:Actuator with electromagnetic shielding to resist industrial electromagnetic interference;Valve body vibration resistance:≤5g Acceleration(10-500Hz)

Certification Standards

CE,API 600(valve standard),ATEX Ex d IIC T6(explosion-proof version optional,suitable for hazardous areas)

Maintenance Cycle

Under normal operating conditions,maintenance every 12 months;under severe operating conditions,maintenance every 6 months

Mean Time Between Failures(MTBF)

180,000 hours(at 40°C,high reliability guaranteed)

Key Features and Benefits

250 PSI high-pressure adaptability+low leakage,reliable use in high-pressure applications!The METSO MC2-75-39A 250PSI UNMP0’s 250PSI rated pressure is 67%higher than that of standard valves(150PSI)and can withstand 300PSI instantaneous pressure.A chemical plant in Zhejiang uses it to feed high-pressure reactors.Previously,the standard valve leaked after only three months due to high-pressure seal failure.After replacing it with this valve,it has been leak-free for 18 consecutive months,saving 20,000 yuan in raw material costs per month.Furthermore,it meets ANSI Class V leakage standards,which is 90%less than Class IV leakage,making it both environmentally friendly and material-efficient.

The 316 stainless steel valve body and PTFE seals are corrosion-resistant and wear-resistant!The valve body is made of 316 stainless steel,which is resistant to acid and alkali corrosion.A Shandong electroplating plant uses it to transport acidic plating solutions.Previously,carbon steel valves rusted through after just six months.After replacing them with the METSO MC2-75-39A 250PSI UNMP0,the valve body has remained corrosion-free for two years.The PTFE seal has a low friction coefficient and maintains 90%of its sealing performance after 100,000 cycles,making it five times more durable than ordinary rubber seals and eliminating the need for frequent seal replacement during maintenance.

1-second fast response and±0.5%positioning accuracy provide ultra-precise adjustment!The pneumatic actuator configured with the UNMP0 responds quickly,adjusting valve opening within 1 second when a 4-20mA signal changes,double the speed of the previous actuator(which responded in 2 seconds).The±0.5%positioning accuracy reduces flow regulation deviation from±2%to±0.5%.A thermal power plant in Henan uses this valve to regulate steam flow.After replacing the valve,steam pressure fluctuations dropped from±0.1MPa to±0.02MPa,boiler thermal efficiency increased by 3%,and annual coal costs were saved by 600,000 yuan.

Compatible with Metso DCS and 4-20mA control,the valve provides smoother linkage!It can directly receive 4-20mA control signals from the Metso DCS without the need for a conversion module.A petrochemical plant in Jiangsu uses this valve to interface with the Metso DNA DCS.Previously,third-party valves required a signal converter,which resulted in constant signal delays.After replacing the valve,data transmission is now delay-free,valve adjustment is synchronized with DCS commands,and process stability has increased by 40%.

English Version:

The METSO MC2-75-39A 250PSI UNMP0 is an industrial pneumatic control valve designed by Metso for medium-to-high pressure fluid regulation scenarios.With a rated pressure of 250PSI(1.72MPa)and ANSI Class V leakage performance,it ensures reliable operation in high-pressure applications such as chemical reactor feeding,oilfield pipeline transportation,and power plant steam control.

Its 316 stainless steel body and PTFE seals resist acid-base corrosion and wear,extending service life by 3x compared to carbon steel valves.The UNMP0-equipped pneumatic actuator responds in 1 second to 4-20mA control signals,with±0.5%positioning accuracy—minimizing fluid flow fluctuations.Seamless integration with Metso DCS systems eliminates the need for signal converters,enhancing process stability.

Certified to CE,API 600,and optional ATEX standards,it operates from-20℃to+150°C,making it suitable for harsh industrial environments.For industries requiring high-pressure,precise fluid control,the METSO MC2-75-39A 250PSI UNMP0 delivers unmatched durability and performance,reducing maintenance costs and improving process efficiency.

Applications

In the chemical industry,the METSO MC2-75-39A 250PSI UNMP0 is a precise gatekeeper for reactor feed!It regulates the feed rate to high-pressure reactors.Its 250PSI rated pressure withstands high pressures,while its 316 stainless steel body resists raw material corrosion.A 4-20mA signal communicates with the Metso DCS for real-time feed rate adjustment.A fertilizer plant in Zhejiang province implemented ten of these valves,reducing reactor feed ratio error from±3%to±0.5%,increasing synthetic ammonia production by 5%and producing an additional 80 tons of fertilizer per month.It also reduced waste emissions caused by unstable feed rates.In the oil and gas industry,it’s a”pressure stabilizer”for pipeline transportation!Installed on oil and gas field wellhead pipelines,this valve offers a 250 PSI pressure rating suitable for wellhead delivery pressures.The explosion-proof version(ATEX certified)is suitable for hazardous areas,and its 316 stainless steel construction resists sulfide corrosion in oil and gas.An oil field in Xinjiang previously required monthly maintenance shutdowns with conventional valves.After switching to the METSO MC2-75-39A 250 PSI UNMP0,maintenance is now required only every six months,reducing outage losses by 1.2 million yuan annually.Its low-leakage design also eliminates the safety risks of oil and gas leaks.

In the power industry,the METSO MC2-75-39A 250 PSI UNMP0 also has significant applications!It regulates steam flow in power plant boilers.Its rapid 1-second response time allows for timely response to changes in steam demand,and its±0.5%positioning accuracy ensures stable steam pressure.After installing eight of these valves at a 600MW thermal power plant in Henan Province,boiler steam pressure fluctuations were reduced from±0.1MPa to±0.02MPa,turbine efficiency increased by 2%,generating an additional 12 million kWh of electricity annually and generating an additional 840,000 yuan in revenue.The valves also operate in an operating temperature range of-20°C to+150°C,adapting to temperature fluctuations during boiler startup and shutdown.

Related Products

Metso DNA DCS:Distributed Control System,METSO MC2-75-39A 250PSI UNMP0 core control terminal.The DCS sends 4-20mA signals to control valve opening and receives valve feedback data to form a closed-loop control system.Metso MC1-50-28B 150PSI:This is the lower-pressure predecessor to the METSO MC2-75-39A 250PSI UNMP0.With a rated pressure of 150PSI,it’s suitable for low-pressure fluid applications and can be used interchangeably with the MC2 series when upgrading existing systems.

Metso Pneumatic Actuator Repair Kit:This pneumatic actuator repair kit is compatible with the METSO MC2-75-39A 250PSI UNMP0 UNMP0 actuator.It includes seals,springs,and other components for replacement during maintenance.

Metso 4-20mA Positioner:This valve positioner,compatible with the METSO MC2-75-39A 250PSI UNMP0,improves valve positioning accuracy to±0.2%,making it suitable for high-precision control applications.Metso Pressure Transmitter:Installed in the pipelines before and after the METSO MC2-75-39A 250PSI UNMP0,this pressure transmitter measures fluid pressure and transmits the data to the DCS to assist with valve adjustment.

Metso 316 Stainless Steel Flange:Compatible with the flange connections of the METSO MC2-75-39A 250PSI UNMP0,it resists corrosion and ensures a tight seal.

Metso Valve Lubricant:Designed specifically for the METSO MC2-75-39A 250PSI UNMP0,it reduces valve stem friction,extends valve maintenance intervals,and is suitable for temperatures from-20°C to+150°C.

Installation and Maintenance

Pre-installation Preparation:Before installing the METSO MC2-75-39A 250PSI UNMP0,confirm that the pipeline pressure does not exceed 250PSI.The flange specification is ANSI 150#.Avoid using the wrong flange,which may result in a leaky seal!When installing the valve body,pay attention to the flow direction(arrows are marked on the valve body).Do not install it upside down,as this will cause adjustment failure.Connect the pneumatic actuator to clean compressed air(pressure 0.4-0.6MPa).Blow out the air line before connecting to prevent impurities from entering the actuator and causing it to stick.Tools include a flange wrench,torque wrench,and compressed air pressure gauge.A novice can complete the installation in two hours by following the METSO installation manual.

Maintenance Recommendations:Check the valve seal monthly for leaks.Apply soapy water to the flange and valve stem.Any bubbling indicates a leak and should be addressed promptly.Disassemble the actuator every 6-12 months,replace seals,and apply lubricant.Maintenance intervals should be shortened,especially in dusty or corrosive environments.If the valve is not adjusted correctly,

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