Overview
The Norgren S/666/7 is a manual, mechanical 3/2 valve from Norgren’s established Martonair series. This lever-actuated valve features G1/8 port thread connections, making it a compact, proven solution for directing and regulating compressed air in industrial pneumatic systems. These products are intended for use in industrial compressed air systems only, and are suitable for panel mounting.
Key Features
- Lever-actuated manual control mechanism
- 3/2 function type with G1/8 port sizing
- Compact Martonair series design for space-constrained installations
- Panel mountable configuration for integrated system layouts
- Long-proven, field-tested reliability in industrial air networks
Technical Specifications
- Valve Type: 3/2 Normally Open (mechanically actuated)
- Control Mechanism: Lever (manual actuation)
- Port Connection: G1/8 (ISO 1/8″ female thread)
- Series: Martonair (Norgren)
- Actuation Method: Mechanical (lever-based)
- Mounting: Panel-mountable
- Application: Industrial compressed air systems
- Part Number: S/666/7
Typical Applications
The S/666/7 is widely used in:
- Pneumatic automation circuits requiring manual flow control
- Compressed air distribution networks and manifolds
- Machine control and actuation switching
- Pilot air supply regulation in compound pneumatic systems
- Maintenance and troubleshooting isolation valves
Compatibility & Replacements
Compatible With
- Industrial compressed air systems (ISO 4414 compliant)
- Pneumatic control circuits and manifold systems
- G1/8 female thread pneumatic ports and fittings
- Martonair valve series networks and assemblies
Replaces / Drop-In Replacement For
Verify compatibility with your system integrator before ordering. The S/666/7 is part of Norgren’s S/666 series; confirm that variant numbers match your original component.
Works With
- Standard pneumatic hose and tubing (G1/8 connections)
- ISO 4401 NG6/NG10 sandwich valve stacks (as pilot or branch control)
- Panel mounting brackets and enclosures
- Industrial air compressor distribution networks








