GNAD is the manifold version of the NAD diaphragm cylinder valve, with the valves mounted on a sub-plate. It is configured with 2 to 10 stations, with a choice of common or individual supply. A general purpose version for air, inert gas, water and non-corrosive liquids and a GNADV version for low vacuum are available, with an EPM rubber seal.
| Working Fluid | Air, inert gas, water, non-corrosive and non-absorbable liquids (GNAD), low vacuum (GNADV) |
| Actuation | NC, NO, double acting (GNAD1 / GNAD2 / GNAD3) |
| Number of Stations | 2 to 10 stations |
| Air Supply | Common supply (port C pressurization, port A vacuum pump side) / individual supply (port A pressurization, port C vacuum pump side) |
| Fluid Viscosity | 500 mm²/s or less |
| Working Pressure | 0 to 0.5 MPa (secondary pressure 0.4 MPa or less), GNADV 1.3×10² to 5×10⁵ Pa (abs) (secondary pressure 4×10⁵ Pa (abs) or less) |
| Proof Pressure | 1.0 MPa (water pressure) |
| Fluid Temperature | -10 to 50 °C (no freezing) |
| Ambient Temperature | -10 to 50 °C |
| Valve Seat Leakage | 0.12 cm³/min or less (pneumatic pressure), GNADV 1.33×10⁻³ Pa·m³/s He or less |
| Port Size | Rc1/4, Rc3/8 |
| Orifice Size | 7 mm |
| Cv | 0.7 |
| Sub-plate / Body / Seal | Stainless steel / stainless steel / EPM rubber, stainless steel / polypropylene / EPM rubber, aluminum / polypropylene / EPM rubber |
| Pilot Pressure | 0.4 to 0.5 MPa |
| Pilot Port Size | Rc1/8 |
| Mounting Orientation | Unrestricted |