Norgren M/855 Flow Control Valve - G1 Port Uni-directional
Part Number: M/855
Quick Summary
Norgren M/855 flow control valve delivers reliable uni-directional regulation for compressed air feeds in demanding industrial lines. Engineers struggle with pressure drift and needle loosening that lead to unstable downstream operations. The datasheet does not list formal certifications, but the unit is built for rugged reliability and long service life in automation systems. Key design features include a captive regulating needle that won’t blow out when the adjustment is unscrewed, a calibrated adjustable knob with lock, and wall-mount suitability for flexible layouts. Aluminium body and NBR seat seals enable robust performance across the specified range while minimizing weight and installation footprint. Design heritage from Martonair and IMI Norgren ensures compatibility with common pneumatic circuits, delivering reliable flow control in automation.
Product Information
Extended Description
M/855 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
Flow
2152 l/m, 76 scfm
Materials - Body
Aluminium
Materials - Seat Seal
NBR
Dimensions - Height
171 mm
Dimensions - Length
52 mm
Dimensions - Width
257 mm
Weight
3.5 kg
Country of Origin
China
Range
M/800
Series
Martonair
Brand
IMI Norgren
Feature: Captive regulating needle that won’t blow out when unscrewed → Business Impact: Protects seals and reduces maintenance downtime → Application: Line-mounted regulators in harsh factory air networks. Feature: Calibrated adjusting knob with lock → Business Impact: Delivers repeatable setpoints and audit-friendly validation → Application: Critical for precise pressure control in packaging and assembly lines. Feature: Wall-mount capability → Business Impact: Frees space and simplifies retrofits → Application: Flexible deployment in tight automation cells or near control panels. Feature: Wide operating pressure range 0.3–16 bar → Business Impact: Supports diverse air systems without extra hardware → Application: Multi-zone distribution and consolidated pneumatic networks. Feature: 2152 L/min flow capacity → Business Impact: Maintains fast actuation and stable cycles → Application: High-demand lines in manufacturing and process automation. Feature: Aluminium body and NBR seat seals → Business Impact: Reduces weight while preserving sealing integrity → Application: Robust operation in temperature swings and dusty environments.
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FAQs
Yes. The M/855 features a G1 port designed for compatible compressed air piping and traditional line-mounted regulator configurations. It is well suited for retrofits and new builds in automation lines where robust, leak-tight connections are essential. Ensure correct torque on the port fittings and verify that the regulator upstream pressure matches the device’s operating range to maintain stable regulation.
Key specs include an operating range of 0.3–16 bar, a maximum flow of 2152 L/min, an operating temperature of -20 to 80 °C, and a G1 port size. The aluminium body and NBR seat seal support durable, weight-conscious design suitable for harsh factory environments. These figures guide system architecture for predictable actuation and energy efficiency.
The valve is ideal for line-mounted pneumatic regulation in automation and packaging lines where reliable, repeatable pressure control is needed. Its wall-mount capability supports flexible installations in constrained spaces, while the captive needle and lockable knob enable stable process control and simplified validation in multi-zone distributed systems.
Certification details are not listed in the provided data. For formal declarations such as CE or SIL, consult the official datasheet linked in the downloads section or contact IMI Norgren technical support to confirm current certifications and compliance for your region and application.
The captive regulating needle and lockable knob reduce maintenance events and drift over time, while the aluminium body minimizes weight and simplifies handling. These features contribute to longer service intervals, lower downtime, and improved energy efficiency in continuous operations, delivering a favorable return on investment in busy manufacturing environments.