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

Siemens VGD20.503U Double Body Gas Valve, 2" NPT

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ManufacturerSiemens

Part numberVGD20.503U

Connection Size 2-inch NPT (requires AGF flanges)

Vent Connection 1-inch NPT

Max Operating Pressure 10-20 psi

Max Back Pressure 2 psi

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CAGE: 9NK75

Two safety shut-off valves in series Stainless steel mesh inlet filter Dual stem guides for precise alignment Flat disc for safety shut-off Contoured disc for pressure regulation 1" NPT vent connection

Product description

The Siemens VGD20.503U is a 2-inch double-body gas valve engineered for safety shut-off, gas pressure regulation, and air-gas ratio control in commercial and industrial gas burner systems. This valve body houses two safety shut-off valves in series, offering a compact and reliable solution for gas train applications. It is designed to work seamlessly with Siemens SKP series electro-hydraulic actuators.

Primarily used in industrial and commercial gas-fired combustion plants, the VGD20.503U ensures safe and efficient operation of burners. Its robust design and UL, FM, CSA approvals make it a trusted choice for critical applications requiring precise gas flow management and safety compliance.

Stanlo Automation, a veteran-owned surplus parts distributor, proudly offers the Siemens VGD20.503U. We provide access to quality industrial components, ensuring your critical systems are supported by dependable surplus parts.

Technical specifications

Connection Size	2-inch NPT (requires AGF flanges)
Vent Connection	1-inch NPT
Max Operating Pressure	10-20 psi
Max Back Pressure	2 psi
Permissible Temp	-10°C to 60°C
Approvals	UL, FM, CSA, IRI

Common applications

Industrial gas burner systems

Commercial combustion plants

Gas trains

Forced draft burners

Safety shut-off

Pressure regulation

Compatible systems

Siemens SKP series actuators Gas trains for forced draft burners

Also known as

Siemens VGD20.503U Gas Valve Siemens Double Solenoid Gas Valve

Replaces / compatible with

This double gas valve is designed for integration into gas trains and requires compatible Siemens AGF series mounting flanges for installation. Always confirm compatibility with your actuator and piping.

Technical note

Expert tip

The VGD20.503U requires two threaded mounting flanges (AGF series) for installation, which eliminate the need for pipe unions and simplify removal.

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Frequently asked questions

What is the pressure rating for the Siemens VGD20.503U gas valve?

The Siemens VGD20.503U gas valve has a maximum operating pressure that ranges from 10 to 20 psi, depending on the specific application and agency listings. It also has a maximum back pressure of 2 psi.