VNR is an NO type (closed when energized) solenoid relief valve for the gas relief line of industrial combustion equipment. It is used for city gas, natural gas and LPG, with Rp1/2, Rp3/4, Rp1, Rp1 1/4 and Rp1 1/2 ports, and the working pressure is up to 20 kPa.
| Working Fluid | City gas / natural gas / LPG |
| Actuation | NO (closed when energized) |
| Working Pressure | 0 to 20 kPa |
| Flow Rate (natural gas specific gravity 0.65, ΔP = 0.25 kPa, m³/h (ANR)) | VNR-15: 5.8 / -20: 11.7 / -25: 12.7 / -32: 16.6 / -40: 17.2 |
| Cv | -15: 3.8 / -20: 7.8 / -25: 8.4 / -32: 11.0 / -40: 11.4 |
| 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) | VNR-15, 20 and 25: 31 VA / VNR-32 and 40: 50 VA |
| Ambient Temperature | -20 to 60 °C (no freezing) |
| Closing Time / Opening Time | 1.0 s or less / approx. 0.5 s |
| Frequency | 30 cycles/min. or less |
| Mounting Orientation | Vertical direction with the coil up or horizontal direction with the coil horizontal |
| Connection / Port Size | Screw-in (Rp) / -15: Rp1/2, -20: Rp3/4, -25: Rp1, -32: Rp1 1/4, -40: Rp1 1/2 |
| Weight | -15: 1.6 kg / -20: 2.3 / -25: 2.2 / -32: 3.4 / -40: 3.3 kg |
| Proof Pressure | 0.1 MPa |
| Degree of Protection | IPX4 |