VNA-R/RH is a quick open solenoid valve with main and bypass flow rate adjustment mechanisms that switches gas combustion between low and high. A large gas amount flows when energized and a small amount flows when not energized (no shut off function), and the flow rate can be adjusted freely. Ports are Rp3/4, Rp1, Rp1 1/4 and Rp1 1/2.
| Working Fluid | City gas / natural gas / LPG |
| Valve Structure | Flow rate switching (main + bypass flow rate adjustment mechanism), quick open, no shut off function |
| Working Pressure | VNA-R: 0 to 0.055 MPa (when ΔP is 0.035 MPa or less) / VNA-RH: 0 to 0.1 MPa |
| Flow Rate (main + bypass / bypass only) (natural gas specific gravity 0.65, ΔP = 0.25 kPa, m³/h (ANR)) | -20: 19 / 7.4 | -25: 23 / 6.4 | -32: 42 / 9.3 | -40: 45 / 9.1 (common to R and RH) |
| Cv (main fully open (+), bypass fully open (H)) | -20: 12.8 / -25: 15.5 / -32: 28.3 / -40: 30.3 |
| Flow Rate Conversion Coefficient (multiply flow rate in table) | Natural gas (13A) 1.0, city gas (6B/6C) 1.09, propane 0.63, butane 0.57, butane-air (6A) 0.72 |
| Rated Voltage | 100 VAC (+10/-15%), 200 VAC (+10/-15%) (common to 50 and 60 Hz) |
| Power Consumption (apparent power) | VNA-20-R/25-R: 31 VA / VNA-32-R/40-R and VNA-20-RH/25-RH: 50 VA / VNA-32-RH/40-RH: 82 VA |
| Ambient Temperature | -20 to 60 °C (no freezing) |
| Opening Time / Closing Time | 0.5 s or less / 1.0 s or less |
| Frequency | 30 cycles/min. or less |
| Flow Rate Adjustment | Main flow rate 50 to 100% / bypass flow rate 10 to 100% |
| Mounting Orientation | Vertical direction with the coil on top or horizontal direction with the coil horizontal |
| Connection / Port Size | Screw-in (Rp) / -20: Rp3/4, -25: Rp1, -32: Rp1 1/4, -40: Rp1 1/2 |
| Weight | VNA-R: -20 2.6 kg / -25 2.5 / -32 4.1 / -40 4.0 | VNA-RH: -20 3.0 kg / -25 2.9 / -32 5.1 / -40 5.0 |
| Proof Pressure | VNA-R: 0.1 MPa / VNA-RH: 0.3 MPa |
| Degree of Protection | IPX4 |