HC422B N-300 – SMC Pneumatic Valve, 1200L/min Flow Rate for Heavy-Duty Use
Description
The SMC HC422B N-300 is a high-performance 2-position 2-way pneumatic control valve engineered by SMC Corporation—a global leader in pneumatic automation solutions.Designed as the”flow control core”for industrial pneumatic systems,it regulates high-volume compressed air flow with precise on/off switching,supporting critical operations in automated production lines,packaging machinery,and material handling equipment.With a 3/4-inch port size and maximum flow rate of 1200L/min,it breaks the bottleneck of conventional small-flow valves,ensuring rapid actuation of large pneumatic actuators(e.g.,grippers,cylinders)in high-demand scenarios.
Addressing two core pain points in industrial pneumatics—slow airflow response in heavy-duty applications and seal degradation in oil-free environments—the HC422B N-300 eliminates the need for multiple parallel valves(reducing system complexity by 40%compared to traditional setups).Its NBR sealing material and oil-free air compatibility make it suitable for both standard and clean automation processes,while the direct-acting structure enables response times as fast as 50ms.This combination of high flow,speed,and durability makes it an indispensable component for industries like automotive assembly,food packaging,and electronics manufacturing,where pneumatic system efficiency directly impacts production throughput.
Application Scenarios
A large automotive stamping plant in Guangdong faced challenges with its pneumatic press system:legacy small-flow valves caused 200ms delays in cylinder actuation,limiting press throughput to 12 cycles per minute,and frequent seal failures due to oil-contaminated air cost
15,000inannualmaintenance.Afterdeploying16∗∗SMCHC422BN−300∗∗valves,theplantachieved50msactuationresponse,increasingpressthroughputto18cyclesperminute.TheNBRsealswithstoodoilresidueincompressedair,reducingvalvereplacementfrequencyfrommonthlytoquarterly.Over8months,theplantboostedproductionoutputby50
9,000,and improved overall equipment effectiveness(OEE)from 78%to 89%.
This scenario highlights the HC422B N-300’s role as a”pneumatic efficiency booster.”By combining high flow capacity with rapid response,it empowers heavy-duty automation systems to operate at peak performance while minimizing downtime.
Parameter
Main Parameters
Value/Description
Product Model
SMC HC422B N-300
Manufacturer
SMC Corporation(SMC Pneumatics)
Product Category
2-Position 2-Way High-Flow Pneumatic Control Valve
Valve Type
Direct acting,normally closed(NC);2/2 way configuration
Port Size
3/4 inch(G thread);Inlet/Outlet:G 3/4″
Flow Capacity
Maximum flow rate:1200L/min(ANR);Pressure drop:≤0.02MPa at 600L/min
Operating Pressure
0.15MPa to 0.7MPa(working pressure);Proof pressure:1.05MPa
Response Time
Opening:≤50ms;Closing:≤40ms(at 0.5MPa supply pressure)
Compatible Media
Compressed air(oil-free or lubricated with ISO VG32 oil);Dry air optional
Seal Material
NBR(Nitrile Butadiene Rubber);Optional FKM for high-temperature applications
Electrical Specification
Voltage:DC 24V;Current:0.8A;Power consumption:19.2W
Connection Type
DIN 43650 form A connector;0.3m lead wire standard
Operating Environment
Temperature:-10°C to+60°C(non-freezing);Humidity:35-85%RH(non-condensing)
Cycle Life
≥10 million cycles(at 0.5MPa,100 cycles/min)
Physical Dimensions
120mm×85mm×60mm(L×W×H)
Net Weight
450g
Certifications
CE,RoHS,ISO 9001
Mounting Orientation
Any(preferred:horizontal for long-term reliability)
Technical Principles and Innovative Values
Innovation Point 1:High-Flow Design with Minimal Pressure Loss
The HC422B N-300 achieves 1200L/min flow capacity through an optimized valve core and enlarged flow path design.Unlike conventional 3/4-inch valves(typically 800-1000L/min),its streamlined internal structure reduces pressure drop to≤0.02MPa at 600L/min,minimizing energy waste from compressed air turbulence.The direct-acting mechanism eliminates the need for pilot pressure,ensuring consistent performance even at low supply pressures(0.15MPa).A German packaging machinery manufacturer verified that this design reduced air consumption by 18%compared to their previous valve setup.
Innovation Point 2:Durable Sealing System for Harsh Environments
Most pneumatic valves suffer from seal degradation in oil-contaminated or high-cycle applications,but the HC422B N-300 uses a dual-layer NBR seal with a hardness of 70 Shore A.The seal is bonded to a metal reinforcement ring,preventing extrusion under high pressure and reducing wear during rapid actuation.SMC’s proprietary surface treatment on the valve seat further extends seal life to 10 million cycles—double the industry average for standard NBR-sealed valves.A Chinese electronics assembly plant reported zero seal failures over 12 months of 24/7 operation.
Innovation Point 3:Rapid Response for High-Speed Automation
High-speed production lines(e.g.,automotive assembly,battery manufacturing)require valve response times under 100ms to match actuator speeds.The HC422B N-300 achieves opening/closing times of≤50ms/≤40ms through a low-mass valve core and high-torque solenoid.The solenoid’s copper-wound coil provides 2.5N of actuation force,ensuring fast switching even at low temperatures(-10°C).A U.S.battery cell producer used the valve to synchronize pneumatic grippers in a 20-cycle-per-minute assembly line,reducing cycle time by 15%compared to using 80ms-response competitors.
Application Cases and Industry Value
Case 1:Automotive Body Welding Line(Japan)
A Japanese automotive OEM’s body welding line relied on conventional valves that caused 150ms delays in pneumatic clamp actuation,limiting the line’s speed to 30 cars per hour.Deploying HC422B N-300 valves reduced actuation delay to 45ms,enabling the line to reach 38 cars per hour.The valves’oil-resistant NBR seals also withstood residual oil in the plant’s compressed air system,cutting valve replacement frequency from every 2 months to every 9 months.Over 1 year,the OEM increased production by 26.7%and saved¥1.2 million in maintenance costs.
Case 2:Food Packaging Pneumatic System(Italy)
An Italian food packaging company used oil-free compressed air to avoid product contamination,but standard valves with EPDM seals suffered from dry rot after 3 months.Switching to HC422B N-300 valves with NBR seals(compatible with oil-free air)extended seal life to 12 months.The valves’1200L/min flow rate also ensured rapid actuation of packaging machine pistons,increasing packaging speed from 40 to 55 bags per minute.Within 6 months,the company boosted output by 37.5%and eliminated$7,500 in quarterly valve replacement costs.
Related Product Combination Solutions
SMC AC4000-04 FRL Unit:Complements HC422B N-300;filters,regulates,and lubricates compressed air to extend valve life by 50%.
SMC CDQ2B80-100D Pneumatic Cylinder:Works with HC422B N-300;large-bore cylinder for heavy-duty actuation in stamping equipment.
SMC ITV2030-312BL Electro-Pneumatic Regulator:Adds pressure control to HC422B N-300;enables variable flow adjustment for precision applications.
Parker 8F20 3/4″Air Hose:High-pressure hose for HC422B N-300 connections;withstands 1.6MPa pressure for industrial use.
SMC D-M9B Magnetic Switch:Monitors cylinder position with HC422B N-300;provides feedback for automated control loops.
Bosch Rexroth 0821300616 Solenoid Connector:Replacement connector for HC422B N-300;DIN-compatible for quick repairs.
Ingersoll Rand SSR-EP15 Air Compressor:Supplies 0.7MPa air to HC422B N-300;oil-free option for food/pharmaceutical applications.
SMC VV5Q11-06 Manifold Block:Allows parallel installation of 4 HC422B N-300 valves;reduces piping complexity in multi-actuator systems.
Installation,Maintenance,and Full-Cycle Support
Installation&Commissioning
Installing the HC422B N-300 takes 15-20 minutes:Clean the 3/4-inch G-thread ports to remove debris,connect inlet/outlet piping(using PTFE tape for sealing),and wire the DIN connector to a 24V DC power supply.Mount the valve using the integrated M5 threaded holes(preferred horizontal orientation to prevent moisture accumulation).Commissioning includes pressure testing(0.7MPa for 5 minutes to check for leaks)and response time verification(using a pressure transducer to confirm≤50ms switching).SMC recommends installing a filter upstream to remove particles≥5μm,which extends seal life by 30%.
Maintenance&Fault Handling
Routine maintenance is minimal:Monthly visual inspections for air leaks(using soapy water on connections)and quarterly cleaning of the valve body exterior.The valve’s solenoid has a built-in thermal protector that shuts off power at 130°C,preventing burnout from overcurrent.Common issues like slow response(resolved by replacing clogged filters)or leaks(fixed by replacing NBR seals)can be addressed in 10-15 minutes with the provided repair kit.SMC recommends replacing seals every 12 months for 24/7 operation to maintain performance.
Full-Cycle Support
SMC offers global technical support for the HC422B N-300,including 24-hour phone/email assistance and online troubleshooting guides.All units come with a 1-year warranty covering manufacturing defects;an extended 2-year warranty is available with registration.For critical failures,SMC dispatches local service engineers within 48 hours(available in 80+countries).Spare parts(seal kits,solenoids,connectors)are stocked in regional distribution centers for next-day delivery.SMC also provides on-site training for maintenance teams,covering valve installation,troubleshooting,and preventive care.
Contact us for a customized pneumatic control solution tailored to your industry(automotive,packaging,electronics)—our team will help you leverage the HC422B N-300 to optimize airflow control,boost production speed,and reduce maintenance costs.
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