Norgren S/666/108 Inline Valves - Roller/Spring Return
Part Number: S/666/108
Quick Summary
Inline valves like the Norgren S/666/108 provide precise actuation of pneumatic circuits in compact automation manifolds. In busy production environments, limited panel space and frequent setup changes can slow lines and raise maintenance costs. CE marking is common for EU safety, IP ratings vary by configuration to protect against dust and splash, and SIL-capable options address safety-instrumented systems in critical processes. For buyers and engineers, this model delivers a compact footprint, robust materials, and flexible mounting that streamline installation, improve uptime, and reduce total cost of ownership while integrating with standard 6 mm tubing and G1/8 ports.
Product Information
Extended Description
S/666/108 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
Roller / Spring return
Function
NC
Valve operation
3/2
Dimensions - Height
19 mm
Dimensions - Length
75 mm
Dimensions - Width
34 mm
Weight
0.32 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/666/108 inline valve is designed for compact pneumatic control in automation assemblies, delivering a small form factor without sacrificing performance. Feature → Business Impact → Application: The device’s 75 mm length, 34 mm width, and 19 mm height along with a 0.32 kg weight create a space-saving profile that frees panel real estate and simplifies enclosure layouts for packaging lines and small automation cabinets. This translates to faster panel builds and easier serviceability in confined spaces. Feature → Business Impact → Application: Roller actuation with spring return provides a reliable manual override and fail-safe behavior, supporting quick operator intervention and safe shutdown in high-cycle environments. This suits pick-and-place tooling and small cylinder controls where immediate manual control improves line responsiveness. Feature → Business Impact → Application: The 3/2 valve operation with normally closed function ensures a predictable default state, reducing unintended actuation and enabling safer machine startup sequences in medical device packaging, cosmetics filling, and general automation. Feature → Business Impact → Application: G1/8 port size and compatibility with Pneufit C fittings (C02250618, C02470618) plus 6 mm tubing (PA2 series) enable rapid plumbing and modular expansion, minimizing leak points and installation time in new lines or retrofit projects. Feature → Business Impact → Application: Quiet operation via a T40C1800 silencer reduces workplace noise, helping meet local noise regulations and improving operator comfort in assembly lines and automotive sub-assemblies. Feature → Business Impact → Application: The Martonair S/666 range, manufactured in Czechia, offers proven reliability and available variants that can be selected to meet regional compliance and lead-time requirements, beneficial for OEMs and contract manufacturers implementing standardized valve kits across multiple plants. This valve may also be used as a 2/2 valve in suitable configurations, expanding its versatility in low-flow control tasks.
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FAQs
The valve supports standard pneumatic plumbing with 6 mm tubing (PA2 series) and Pneufit C fittings (C02250618, C02470618). This enables rapid field connections, reduces assembly time, and minimizes leak points, making it ideal for retrofit projects and new builds alike.
The valve operates at 2 to 10 bar and functions from -20 to 80 °C. This wide range supports most industrial environments, from cold automation cells to hot production lines, while maintaining reliable 3/2 valve actuation and NC configuration.
Yes, in specific configurations the valve can function as a 2/2 valve. When doing so, confirm that porting and actuation meet the required cycle rate and that the circuit topology aligns with a non-bridging pressurization path to avoid unintended actuation.
Many Norgren products carry CE compliance for EU markets; IP ratings and SIL compatibility depend on configuration and accessories. Always verify the exact variant in the datasheet to ensure alignment with your regulatory requirements and safety system design, particularly for safety-critical or harsh-environment applications.
Compact dimensions and lightweight construction simplify enclosure design and maintenance access. The integrated silencer reduces noise, supporting workplace compliance, while the robust Martonair construction and readily available fittings/tubing options help shorten installation time and improve uptime across multiple plants.