Norgren M/839 Valve - Heavy Duty, Uni-directional, G1/2
Part Number: M/839
Quick Summary
Norgren M/839 valve provides precise flow control for compressed-air systems in industrial applications. Engineers often struggle with needle stability under high pressure and the risk of accidental blow-out when regulators are loosened for service. In regulated environments, CE conformity and IP-rated configurations are common requirements, with SIL safety options specified for critical circuits—verify the datasheet for exact certifications. This valve combines a line-mountable design with a captive regulating needle that won’t blow out when unscrewed and a calibrated, lockable adjusting knob for repeatable settings. The brass body and robust construction support long service life, enabling reliable, low-maintenance operation in demanding factories.
Product Information
Extended Description
M/839 Norgren: Line mounted general purpose regulators | Captive regulating needle will not blow out when unscrewed | Calibrated adjusting knob, can be locked | Suitable for wall mounting | High operating pressure
Medium
Compressed air
Operating Temperature
-20 ... 80 °C, -4 ... 176 °F
Operating Pressure
0.3 ... 16 bar, 4 ... 232 psi
Port Size
G1/2
Flow
708 l/m, 25 scfm
Materials - Body
Brass
Materials - Seat Seal
NBR
Dimensions - Height
96 mm
Dimensions - Length
28 mm
Dimensions - Width
148 mm
Weight
0.6 kg
Country of Origin
China
Range
M/800
Series
Martonair
Brand
IMI Norgren
C02250618
Pneufit C Push-in fitting, Adaptor, Straight, External/Internal hex, 6mm, G1/8
C02470618
Pneufit C Push-in fitting, Adaptor, 90° Swivel elbow, 6mm, G1/8
PA2-0012025C
Polyamide tube, Natural, 25m, 12mm/9mm
M/3314
Tube cutter
PA2-0012100
Polyamide tube, Natural, 100m, 12mm/9mm
Feature: Brass body with NBR seals provides durable, leak-tight performance in challenging shop-floor conditions. Benefit: Reduces maintenance cycles and extends component life, lowering total cost of ownership. Application: Ideal for line-mounted regulators in packaging and automation lines where reliability is critical. Feature: Captive regulating needle prevents blow-out if unscrewed and a lockable, calibrated knob enables repeatable setpoints. Benefit: Safer adjustments, consistent output, and faster changeovers with less process variation. Application: Useful during routine maintenance and line reconfigurations in high-availability systems. Feature: G1/2 port size and a flow capacity of 708 L/min (25 scfm). Benefit: Seamless integration with standard pneumatic hardware and minimal pressure drop, boosting overall cycle efficiency. Application: Common in tooling machines and conveyor systems requiring steady air flow. Feature: Wall-mount and line-mount versatility with compatible Pneufit C fittings. Benefit: Flexible installation options reduce cabinet space needs and simplify retrofits. Application: Suitable for compact automation installations and retrofit projects. Feature: Operating range -20 to 80 °C and high operating pressure tolerance. Benefit: Broad environmental compatibility reduces selection risk across factories. Application: Harsh workshop environments and outdoor installations where temperature swings occur.
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FAQs
The M/839 uses a G1/2 port and is designed to work with Pneufit C push-in fittings (examples C02250618 and C02470618). This ensures fast, leak-tight assemblies with common 6 mm tubing, simplifying integration into existing pneumatic circuits and reducing installation time.
Operating pressure ranges from 0.3 to 16 bar (4 to 232 psi) with a flow capacity of 708 L/min (25 scfm). The medium is compressed air, and the operating temperature spans -20 to 80 °C. These specs support stable regulation and consistent actuator performance in demanding environments.
Yes. The valve is designed for both line mounting and wall mounting, offering installation flexibility in tight spaces. Its compact footprint (96 mm height, 28 mm length, 148 mm width) combined with a robust brass body makes it suitable for factory floors, control panels, and retrofit projects.
The body is brass with NBR seat seals, providing good corrosion resistance and reliable sealing under high pressure. A captive regulating needle prevents blow-out if loosened, and the calibrated knob can be locked to maintain a chosen setting, supporting repeatable operations and reducing adjustment errors in batch processes.
Durable brass construction, a lockable knob, and a captive needle reduce downtime and re-adjustment needs, delivering lower maintenance costs and faster commissioning. In practice, this translates to improved uptime, more stable process control, and a favorable return on investment for pneumatics-heavy lines in manufacturing environments.