Siemens VGD20.503U - 2" Double Body Gas Valve

The normally closed VG series of modular single and double-body gas valves combined with SKP series electro-hydraulic actuators provide safety shut-off, gas pressure regulation and air/gas ratio control for commercial and industrial gas burners.

Details:

• Stainless steel mesh inlet filter protects the valve seat(s) as well as downstream components
• 1/4" NPT pressure taps on the inlet and outlet
• Dual stem guides ensure precise disc alignment and tight shut-off
• Consist of two safety shut-off valves in series
• The first (inlet) valve has a flat valve disc applicable for safety shut-off function only
• The second(outlet) valve has a contoured valve disc for use with pressure regulating actuators
• A 1" NPT vent connection between the valves
• Requires two threaded mounting flanges
• Each flange includes the necessary installation hardware (bolts, nuts and O-ring)
• Each mounting flange has a 1/4" NPT pressure tap
• The flanges can be pre-mounted onto the pipe, and then bolted onto the VGD20 gas valve body
• This feature eliminates the use of pipe unions and permits the gas valve assembly to be easily removed from a gas train
• The overall dimensions of both the 1-1/2" and 2" AGAxxU flanges are identical
• This permits a 1-1/2" flange to be mounted on a 2" valve body or vice versa