Safety solenoid valves for air and gas, fast opening and fast closing type
DN8 … DN150
The VMR type valve is a fast opening single-stage solenoid valve, normally closed (open when energized). This type of device is suitable for air or gas blocking and releasing controls, required in gas power burners, atmospheric gas boilers, industrial kilns and others gas consuming appliances.
Function and Application
The VMR type valve is a safety shutting device using auxiliary power supply. When it is de-energized, the spring pushes on the seal disc, keeping the gas passage closed. Now, the inlet chamber is under the gas line pressure which forces on the disc, increasing the closing function and improving the seal. When the coil is powered the valve opens rapidly, against the strength of the spring and gas pressure. The flow may be adjusted using the regulating screw on the top (see the installation and service instructions). If the power supply is shut off, the valve rapidly closes, interrupting the gas flow
Specification
| Connections | Internal threaded ISO 7-1 from Rp1/4 to Rp2½ |
| ANSI-ASME B1.20 from 1/4”NPT to 2”½NPT | |
| Flanged ISO 7005 PN16 from DN40 to DN150 | |
| ANSI-ASA-ASME B16.5 class 150 from 2” to 6” | |
| Voltage ratings | 230 VAC 50/60 Hz |
| 120 VAC 50/60 Hz | |
| 110 VAC 50/60 Hz | |
| 24 VAC/DC | |
| 12 VAC/DC | |
| Voltage tolerance | -15% to +10% |
| Temperature | -15°C to +60°C (+5°F to +140°F) |
| Max. operating pressure | 200 mbar (3 psig) |
| 360 mbar (5 psig) | |
| 500 mbar (7 psig) | |
| 6 bar * (90 psig) | |
| Body test pressure | 1 bar (15 psig) |
| 9 bar * (130 psig) | |
| Closing time | < 1 second |
| Opening time | < 1 second |
| Gas strainer | 600 µm (0.02 in) (except brass models and 6 bar) |
| Enclosure | IP54 (NEMA 3), optional IP65 with cable (NEMA 4) |
| Cable gland | M20x1,5 for terminal box |
| PG 9 for ISO plug | |
| Wires cross-section | 2,5 mm2 max. (AWG 12) for terminal board |
| 1,5 mm2 max. (AWG 14) for ISO plug | |
| Electrical safety | Class I (EN 60335-1) |
| Coil winding insulation | Class H (200°C, 392°F) |
| Coil thermal resistance | Class F (155°C, 311°F) |