DUNGS DMV-D 507/11 Double Solenoid Valve

Overview

The DUNGS DMV-D 507/11 is a double solenoid gas valve that combines two independent, normally closed automatic shut-off valves inside a single compact aluminium housing, replacing what previously required two separate single-stage valves mounted in series. Both valve stages, V1 and V2, are fast opening and fast closing, and the DMV-D 507/11 provides adjustable main gas volume control at V1, allowing the commissioning engineer to set flow precisely for the connected burner or industrial heating appliance. Certified as an automatic shut-off valve to EN 161 Class A Group 2, the DMV-D…/11 series is the standard safety element specified inside gas burner safety trains across process heating, boiler plant, and commercial kitchen installations.

As the official authorized partner and exclusive regional representative for DUNGS, Seven Star LLC proudly supplies the DMV-D 507/11 double solenoid valve to facility engineers, EPC contractors, and OEM burner manufacturers across the Sultanate of Oman and the wider GCC. Every unit shipped from our Muscat-based instrumentation division is genuine DUNGS factory stock, complete with manufacturer warranty, CE type-examination documentation, and full local technical support — giving plant operators in Oman the same safety assurance and traceability expected on European and North American gas trains.

Operating Principle of the DUNGS DMV-D

Internally, the DUNGS DMV-D houses two independent single-stage solenoid actuators seated on a shared aluminium body, each acting on its own double-seat valve disc. When the burner control system issues a start command, both solenoids energize and lift their respective valve discs off the seat within less than one second, opening a full, unrestricted gas path to the burner head. On any safety trip, ignition failure, or normal shutdown command, de-energizing the coils allows spring force to snap both valve discs closed in under one second, independently of one another — a critical redundancy feature, since either valve alone is capable of providing a leak-tight shut-off to EN 161 Class A even if the other stage fails to close.

Gas volume through the train is fine-tuned mechanically at the main volume restrictor on valve V1, letting commissioning technicians set the burner’s full-rate firing flow without needing a separate manual gas cock. Because the shut-off elements are solenoid-actuated poppet valves rather than throttling devices, the DMV-D 507/11 introduces minimal pressure drop across the open valve while still delivering the double-block safety architecture that EN 676 and EN 12952 burner safety codes require, with no moving parts exposed to the gas stream beyond the seat and disc assembly itself.

Engineering Design of the DUNGS DMV-D 507/11

The DUNGS DMV-D 507/11 is built around a lightweight, non-ferrous-metal-free aluminium and steel housing rated for natural gas, propane, butane, air, and other inert gases containing up to 0.1 vol.% H&sub2;S, dry. The valve accepts threaded Rp connections from 1/2″ through 1″ (Rp 1/2, Rp 3/4, Rp 1, and their combinations via a bolt-on flange ordered separately), and the solenoid assembly can be mounted vertically upright through to lying horizontally, giving installers flexibility inside constrained gas train enclosures. A sieve is fitted internally upstream of both valve stages, and DUNGS additionally recommends an upstream gas filter to protect the complete train from particulate fouling.

Electrically, the DMV-D 507/11 is available in 110 VAC, 220–240 VAC, and 24 VDC coil variants at 45 VA rated power, terminated through a DIN EN 175301-803 plug connector with an IP 54 enclosure rating suitable for indoor plant-room and outdoor skid environments alike. Measuring and ignition gas connections (G 1/8 and G 1/2 to ISO 228) are provided on both sides of the body, upstream of V1, between V1 and V2, and downstream of V2, allowing pressure switches, valve proving systems, and a mountable K01/1 closed-position signal contact to be added without additional machining. The valve operates continuously at 100% duty cycle across an ambient range of −15 °C to +60 °C.

Key Features

Specifying the DUNGS DMV-D 507/11 for a new or retrofit gas train gives engineers a compact, code-compliant safety solution. The DUNGS DMV-D 507/11 double solenoid valve delivers the following features for demanding gas train duty:

• Integrates two independent EN 161 Class A Group 2 automatic shut-off valves in a single, compact aluminium fitting.
• Fast opening and fast closing on both V1 and V2 stages, each completing in under one second for rapid, reliable safety response.
• Adjustable main gas volume restrictor at V1 allows precise commissioning of burner firing rate without a separate manual valve.
• Maximum operating pressure of 500 mbar (50 kPa), suitable for the vast majority of low-pressure industrial and commercial gas trains.
• Threaded Rp connections from 1/2″ to 1″ with flanges ordered to match the connected pipework.
• Internal sieve protects both valve stages, with provision for an upstream gas filter on the complete train.
• Multiple measuring, ignition gas, and pressure-switch connection ports built into the body for full train instrumentation.
• IP 54 rated DIN plug connection supports 100% continuous duty cycle in 110 VAC, 220–240 VAC, or 24 VDC coil configurations.

Industrial Applications

The DUNGS DMV-D double solenoid valve is specified wherever a gas-fired appliance requires two safety shut-off valves in series inside its burner management system — industrial process heating lines, packaged and cast-iron sectional boilers, commercial kitchen gas manifolds, hot water generators, and OEM burner skids destined for hotels, hospitals, and light industrial plant. Its compact double-valve architecture is especially valued on retrofit projects where panel space is limited, letting operators upgrade an ageing single-valve train to modern double-block-and-bleed safety standards without reworking the entire manifold.

As the officially authorized partner for DUNGS, Seven Star LLC distributes the DMV-D 507/11 to district cooling plants, commercial HVAC contractors, RO desalination utilities, hospitality groups, and hospital facilities engineering teams throughout Muscat, and to industrial customers operating inside the Sohar and Salalah economic free zones. Whether the requirement is a single replacement valve for an existing gas train or a full bill of materials for a new burner safety package, our instrumentation division in Oman keeps DUNGS gas valves, filters, and pressure switches in regional stock to minimize plant downtime across the GCC.

Technical Specifications

Engineers specifying the DUNGS DMV-D 507/11 for a burner safety train should reference the table below, which summarizes the core technical specifications of the DUNGS DMV-D 507/11 double solenoid valve as documented in the manufacturer’s technical datasheet.

Request a Quote for DUNGS DMV-D 507/11 Double Solenoid Valve

Seven Star LLC maintains the DUNGS DMV-D 507/11 double solenoid valve, matching flanges, and gas train accessories in regional warehouse stock for rapid dispatch across Oman and the GCC. Order the DUNGS DMV-D 507/11 with confidence knowing every unit is genuine, factory-warranted DUNGS stock. Contact our instrumentation division for a formal RFQ, full technical datasheet, or engineering support in specifying the correct DMV-D variant, voltage, and connection size for your burner safety train. As the authorized partner for DUNGS in Oman and the GCC, Seven Star LLC guarantees genuine factory-warranted product, calibration traceability, and local technical backup on every order.

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