Norgren M/21/11 Inline Valves - 3/2 Pneumatic Valve
Part Number: M/21/11
Quick Summary
Norgren M/21/11 Inline Valves control air flow in compact automated pneumatic circuits. Engineers often struggle with high actuation forces and limited sensitivity in crowded lines. This Martonair valve supports CE compliance and robust durability for standard industrial environments, with options aligned to IP-rated protections across the family. The design combines very low pilot pressure, a light body, and a true 3/2 operation to deliver reliable, repeatable actuation. By integrating with Pneufit C fittings and 6 mm tubing, you gain faster installation and reduced leak paths, translating to lower maintenance costs and higher line throughput. In practice, technicians appreciate the exhaust port protection and nitrile seals that resist common factory lubricants.
Product Information
Extended Description
M/21/11 Norgren: Light, compact body | Very low pilot pressure | Air bleed principle | Exhaust port protected by filter disc | Low operating force – highly sensitive
Medium
Compressed air
Operating Temperature
5 ... 80 °C, 41 ... 176 °F
Operating Pressure
4 ... 10 bar, 58 ... 145 psi
Valve operation
3/2
Materials - Body
Zinc alloy
Materials - Piston
Steel
Materials - Seals
Nitrile rubber
Range
M/21
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
PA2-0006100
Polyamide tube, Natural, 100m, 6mm/4mm
PA2-0006025C
Polyamide tube, Natural, 25m, 6mm/4mm
M/3314
Tube cutter
Feature: Inline valve with a light, compact zinc alloy body and a steel piston delivers robust performance in tight spaces. Impact: Enables high-density mounting and lower overall system weight, supporting compact automation layouts and easier installation in confined panels. Application: Ideal for end-of-arm tooling, inline cylinder control, and small-pilot pneumatic networks. Feature: Very low pilot pressure combined with an air bleed principle provides highly sensitive actuation. Impact: Reduces energy consumption and improves response times in fast-cycling lines. Application: Suitable for precise position control in pick-and-place or synchronous conveyor applications. Feature: Exhaust port protected by a filter disc minimizes contamination reaching the valve internals. Impact: Extends service intervals and reduces maintenance cost in dirty factory environments. Application: Beneficial in packaging and food-and-beverage lines where dust and particulates are common. Feature: Materials - Body, Piston, and Seals (Zinc alloy, Steel, Nitrile rubber) deliver durability and chemical resistance. Impact: Improves lifecycle performance and resilience against lubricants typically used in automation environments. Application: Fits long-running production lines with minimal replacement parts. Feature: Range M/21 and Series Martonair with compatible fittings and tubing (Pneufit C, 6 mm tubing, G1/8 fittings; PA2-0006100 and PA2-0006025C). Impact: Simplifies installation, reduces leak paths, and speeds system integration. Application: Petrochemical, packaging, and general automation where fast, reliable pneumatic control is required. Feature: Valve operation 3/2 with a proven build for inline control across 4–10 bar and 5–80 °C environments. Impact: Supports broad process windows and high-repeatability in standard industrial settings. Application: Used for cylinder actuation, venting, and sequential control in compact machines.
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FAQs
The M/21/11 uses standard Pneufit C push-in fittings for quick, secure tube connections and is compatible with 6 mm tubing (PA2-0006100) and related 4 mm sizing. Optional 90° swivel elbows and straight adaptors are available (C02250618 and C02470618) to simplify routing in tight panels and complex layouts. This reduces installation time and leak potential while enabling straightforward field maintenance.
Key specs include a 3/2 valve operation, medium: compressed air, operating pressure from 4 to 10 bar (58 to 145 psi), and operating temperature from 5 to 80 °C (41 to 176 °F). The design features a low pilot pressure with an air bleed, enabling sensitive actuation and reduced energy consumption on high-cycle applications.
Yes. The M/21/11 is built for reliable, repetitive operation in automated environments. Its light, compact body reduces inertia, while the low actuation force and air bleed help achieve faster response times. Coupled with robust nitrile seals and a protected exhaust, the valve supports high-cycle throughput with lower wear and maintenance demands compared with heavier, higher-force alternatives.
Maintenance focus should include inspecting the exhaust port filter disc for clogging, checking seals for signs of wear or chemical attack, and verifying that fittings remain tight. The nitrile seals and zinc alloy body are durable but should be monitored in aggressive environments. Regular checks of tube connections (6 mm) and Pneufit C fittings help prevent leaks and maintain performance.
The M/21/11 reduces operating energy due to low pilot pressure and efficient actuation, cutting running costs in continuous cycles. Its compact form saves panel space and speeds installation, lowering labor costs. Durable materials and protected exhaust lower maintenance frequency, while compatibility with standard fittings reduces spare parts expense and downtime in production lines.