Norgren S/666/40 Inline Valves - 3/2 NC Valve
Part Number: S/666/40
Quick Summary
S/666/40 Inline Valves are compact pneumatic controls used to manage inline processes in packaging and general manufacturing. Engineers often struggle with tight spaces, inconsistent actuation, and maintenance overhead that hampers line uptime. Note: Certification details for this model are not listed here; verify CE conformity, IP rating, and SIL compatibility with your supplier to meet regulatory needs. The S/666/40 leverages a Martonair heritage with a G1/8 port and push-in fittings, enabling quick field installation in dense automation layouts. Its compact footprint and robust performance translate to lower installation costs and improved overall equipment effectiveness in pneumatic systems.
Product Information
Extended Description
S/666/40 Norgren: Long established and well-proven valves | Compact size | May also be used as 2/2 valves
Medium
Compressed air
Operating Temperature
-20 ... 80 °C, -4 ... 176 °F
Operating Pressure
2 ... 10 bar, 29 ... 145 psi
Port Size
G1/8
Actuation
Air pilot / Spring return
Function
NC
Valve operation
3/2
Dimensions - Height
19 mm
Dimensions - Length
75 mm
Dimensions - Width
34 mm
Weight
0.14 kg
Country of Origin
Czechia
Range
S/666
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
T40C1800
Quietaire sintered bronze silencer, G1/8
PA2-0006100
Polyamide tube, Natural, 100m, 6mm/4mm
PA2-0006025C
Polyamide tube, Natural, 25m, 6mm/4mm
M/3314
Tube cutter
The S/666/40 inline valve is designed as a compact pneumatic control that fits tight spaces without compromising performance. Its 75 mm length, 34 mm width and 19 mm height create a low-profile solution ideal for mounting in crowded control panels, assembly lines, or robotic cells, while delivering a reliable 3/2 operation with NC logic. This yields straightforward integration into existing logic schemes and reduces wiring complexity on new lines. Operating pressure of 2 to 10 bar and a temperature range of -20 to 80 °C give operators the flexibility to use the valve across multiple production environments, from automotive to consumer goods, with minimal enclosure changes. Push-in Pneufit C fittings, a 6 mm tubing option, and a dedicated silencer reduce leak points and noise, saving maintenance time and boosting process reliability. The ability to reuse this valve in 2/2 configurations with minimal modification adds long-term value for evolving automation layouts. Overall, the valve supports faster changeovers, lower total cost of ownership, and easier spare-part planning for OEMs and maintenance teams.
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FAQs
The valve uses a G1/8 port and is designed for seamless integration with Pneufit C push-in fittings and 6 mm tubing. Its compact dimensions (75 mm x 34 mm x 19 mm) make it ideal for densely packed control panels and robotic cells, while the included silencer helps maintain a quiet workspace during installation and operation.
The 3/2 NC configuration provides normally closed operation with air pilot and spring return actuation, allowing reliable and repeatable control of downstream actuators. With a 2–10 bar supply range and -20 to 80 °C operating envelope, it supports consistent actuation across typical automation environments and reduces the risk of unintended valve opening.
Yes. The S/666/40 is explicitly noted to be usable as a 2/2 valve in certain configurations, enabling straightforward adaptation to simpler circuit topologies or legacy lines. This versatility helps protect automation investments and simplifies retrofits in packaging lines or general machinery.
Typical regulatory considerations include CE conformity for EU markets, appropriate IP protection for enclosure ingress, and SIL compatibility for safety-critical circuits. Since certification details aren’t listed in the dataset, confirm with the supplier or Norgren for the exact compliance status on this model before deployment in regulated environments.
The compact design, push-in fittings, and standard 6 mm tubing reduce installation time and leakage risk, lowering commissioning and maintenance costs. Its long-proven Martonair lineage supports extended service life, lower spare-parts requirements, and a faster return on investment through reduced downtime and more reliable pneumatic control in high-demand lines.