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Combustion 911 Blog

Employee Spotlight: Sutherland McKelvey

We recently sat down with sales engineer Sutherland McKelvey to get to know a little more about him, and his experience at Olsträd Engineering so far. What is your background in engineering? “I was part of a 5 year degree program in Mechanical Engineering at The University of Akron, but wound up taking some exploratory Read More

Elektrogas Proof of Closure FAQ pt 2

Welcome to round two of our proof of closure FAQ! Q: Do I need “Proof of Closure?” A: Proof of Closure (POC) is required by NFPA86 if the burner capacity is 400K BTU/Hr or more; in these cases, proof of closure is required on one valve in series, while visual indication is required on both. Read More

FAQ: How do you wire devices with metric electrical connections?

Conduit For many years, the use of rigid or liquid-tight conduit was the standard for running wires to field devices, such as safety shut-off valves, pressure switches, and flame safety devices. Rigid conduit is thin walled metal tubing that helps to protect wires from mechanical damage and some environmental factors. Liquid-tight conduit is flexible and Read More

Elektrogas VMRNA Automatic Vent Valve

The Elektrogas VMRNA is a normally-open vent valve for industrial combustion systems. Because the valve is open when de-energized, VMRNA can be thought of as the opposite of a safety shut-off valve (closed when de-energized). How they work A reverse-acting solenoid valve, VMRNA is normally open. That means you must apply power to close the Read More

New Combustion Pressure Switch Accessories!

We’re excited to announce our all-new accessories for the C911-P combustion pressure switch are in stock and available now! What’s new? The electrical connection for the C911-P is M18x1.5. This might be an unusual size for some of you, so we are now stocking a cable gland that may be purchased separately if needed (pictured Read More

Meet the New Automation Systems Manager

Mechatronics engineer Jenna Glasure was recently promoted to the role of Automation Systems Manager. Jenna started with Olsträd Engineering as an intern, and has thrived in her time with us, growing as a leader. We’re excited to see what she achieves! We had the opportunity to ask her some questions about this new role and Read More

How to: Attach S Actuators to VF Valves

It’s easy to mate an Elektrogas S actuator with a VF butterfly valve. Here’s how it’s done: Identifying the Parts To begin, let’s gather and identify the necessary parts. S actuators ship with the parts shown above. 1) The solenoid actuator 2) A connection ring3) Two screws4) A cork gasket Butterfly valve VF ships alone. Read More

Custom Control Panels

Olsträd Engineering offers high quality custom panels for combustion and process control. We have long experience with relay logic, PLC-based solutions utilizing advanced HMI, and automation. Each panel is designed according to your needs, taking into account like spares and the best technology available. Our control panels are cost-effective, simple to operate, and easy to Read More

FAQ: What is a Package Burner?

A package burner is an industrial burner with its own dedicated blower. The standard scope of supply includes everything you need to safely run the burner: blower, air valve, air pressure switches, gas manifold (with filter, pressure reducing regulator, safety shut-off valves, gas pressure switches, etc.), ignition transformer, and flame safety. You are responsible for Read More

FAQ: What’s an Air Valve?

The term “air valve” can refer to several distinct pieces of equipment. Combustion requires heat, fuel, and oxygen, and we usually see oxygen provided as a component of ambient air (the air we breathe). The type and quantity of air valves on a system is determined by the application and the control scheme. We might Read More


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