DD Series
Industrial Automatic Gas Shut-off Valve
The DD series are heavy-duty DC 24V electrically-actuated gas shut-off valves for commercial and industrial pipework. High-torque actuators (up to 176.5 N.m) close in 20 seconds or less. F (Flange) type available on all models.
- Closes in 20 seconds or less on gas alarm
- High-torque actuator - up to 176.5 N.m
- DC 24V power supply from compatible controller
- F (Flange) type available on all models
- KGS / KC certified for commercial & industrial use
- Manual reset after shut-off event
DD-706 Specifications
Select a model above to compare specifications.
Flange (F) type is available for all DD series models - compatible with flange-fitted industrial pipework. Specify when ordering.
Built for Commercial & Industrial Scale
≤ 20 Second Shut-off
Full valve closure in 20 seconds or less from alarm signal - fast, reliable containment for commercial and industrial environments.
High-Torque Actuator
98.1-176.5 N.m rated torque handles large-diameter gas valves with positive, repeatable shut-off under full pipe pressure.
KGS / KC Certified
Full KGS and KC certification for commercial and industrial gas safety applications across Korea, including mandatory building safety requirements.
Flange Type Option
F (Flange) type mounting available for all DD series models - compatible with flange-fitted industrial pipe installations without adapters.
GD Series vs DD Series
Both series use the same ball-valve shut-off mechanism - the difference is scale, voltage, and pipe size range.
- DC 12V power supply
- 15A-25A pipe · 1/2"-1"
- Shuts off in ≤ 15 seconds
- 350 g · compact pipe-clamp
- DC 24V power supply
- 32A-65AF pipe · 1-1/4"-2-1/2"
- Shuts off in ≤ 20 seconds
- 3 kg · flange type available
Safety & Installation Warnings
The DD series operates on DC 24V. This differs from the GD series (DC 12V). Verify your controller output voltage before wiring - connecting wrong voltage will permanently damage the actuator.
Commercial and industrial gas line work must be carried out by a licensed gas engineer. Improper installation voids KGS certification and creates a serious safety hazard.
Select the exact model for your pipe diameter: DD-706 (32A/1-1/4"), DD-708 (40A/1-1/2"), DD-710 (50A/2"), DD-713 (65AF/2-1/2"). Incorrect sizing causes mechanical interference or gas leakage.
Immediately ventilate the area, do not operate electrical switches, close the manual gas cock, evacuate all personnel, and call emergency services (119).
DD Series FAQ
Need the DD series for your facility?
Tell us your pipe diameter, DC 24V controller model, and whether you need standard or flange-type fitting - our team will confirm compatibility and provide a quote.