VGG10.404U Siemens Gas Valve

Overview

The Siemens VGG10.404U is a high-performance, normally closed single-body gas valve designed for commercial and industrial burner applications. Built from die-cast aluminum, this 1.5-inch NPT threaded valve is engineered to work in tandem with Siemens SKP series electro-hydraulic actuators. This modular combination provides critical functions such as safety shut-off, gas pressure regulation, and air-to-gas ratio control, ensuring the safe and efficient operation of gas-fired equipment.

Features

• Contoured valve disc ensures smooth gas release and stable regulating control across various flow rates
• Integrated stainless steel mesh inlet filter (0.8 mm to 0.9 mm) protects the valve seat and downstream components from contamination
• Dual stem guides provide precise disc alignment for consistent, tight shut-off performance
• Modular design allows any SKP series actuator to be mounted while the valve is under pressure
• Equipped with four 1/4-inch NPT pressure taps (two on the inlet and two on the outlet) for easy monitoring
• High close-off pressure rating for enhanced safety in industrial gas trains

Specifications

• Model: VGG10.404U
• Connection Size: 1.5-inch NPT threaded
• Body Material: Die-cast aluminum
• Maximum Operating Pressure: 20 PSI (1.4 bar)
• Close-off Pressure: 75 PSI (5 bar)
• Flow Capacity: Approximately 2,047 CFH (Natural Gas at 1-inch w.c. drop)
• Permissible Gas Temperature: 5 F to 140 F (-15 C to 60 C)
• Approvals: UL listed, FM approved, CSA certified, and IRI approvable
• Weight: Approximately 3.5 lbs to 12 lbs depending on shipping configuration

Applications

• Safety shut-off for commercial and industrial gas burners
• Gas pressure regulation and zero governor systems when paired with SKP25 actuators
• Air-to-gas ratio control for premix or nozzle-mix burners using SKP55 or SKP75 actuators
• Suitable for use with natural gas, propane, butane, air, and other non-corrosive gases
• Integration into complex gas trains for boilers, furnaces, and HVAC heating systems