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Combustion 911 Blog

FAQ: What is a double solenoid valve?

You’ve probably run into the phrase “double solenoid safety shut-off valve” from time to time, but what does this mean? What makes a double solenoid valve different than a single valve? Are they required by NFPA86? Join us for answers to these questions, and more! What is a double solenoid valve? A solenoid valve uses Read More

FAQ: What is NFPA86?

If you work in combustion, then you’ve almost certainly heard the term NFPA86 before. Many people seem unsure about what exactly NFPA86 is. So, we’ve put together a handy overview to clarify this commonly heard phrase. NFPA NFPA is an organization (NFPA= National Fire Protection Association). Their goal is to reduce the threat of injury Read More

Elektrogas LMV Linear Control Valve

The Elektrogas LMV series are control valves for linear adjustment of gas or air flow in combustion systems. If you need more precise flow control than you can get from a butterfly valve, then you need a linear flow control valve like the Elektrogas LMV. Servomotors drive LMV valves. The Elektrogas MZ3 servomotor provides 3-point Read More

Intern Summer Send Off

At Olsträd Engineering, we pride ourselves on providing the most immersive, highest quality internships in combustion and automation engineering. With our Summer 2022 internship session coming to a close, we wanted to celebrate our interns’ accomplishments and thank them for being our best group yet. What separates Olsträd Engineering’s internships from others is the level Read More

Career Fairs Fall 2022

Autumn is right around the corner! Students will be returning to school, and we’ll be attending more career fairs. We’re seeking out the best and brightest students to join our team as interns. Internships at Olsträd Engineering are exciting, engaging, and hands-on. We’re primarily looking for engineering students with a focus in mechatronics, automation, electrical, Read More

FAQ: What Does a Pressure Reducing Regulator Do?

Ever wondered what a gas pressure regulator is, or why you need it in your system? We’ve put together this FAQ to help answer your questions! What is a gas regulator? A regulator is a valve with the job of regulating system pressure. In industrial combustion, the two types of regulators we see most often Read More

FAQ: What are Needle Valves?

We often get questions about needle valves. So, we’ve put together this handy FAQ to help answer your questions! Needle valves, also called adjusting valves, or fine-adjusting valves, are usually found downstream of the safety shut-off valves (SSOVs) on the burner gas train, though they can also be found on the burner air train. This Read More

FAQ: What Does a Flame Sensor Do?

A flame sensor is part of the safety chain, as required by NFPA86. The safe operation of an industrial furnace or oven requires us to prove flame is present precisely when we want it. Flame sensors are part of flame supervision. The use of flame sensors automates system response, leaving no room for ambiguity and Read More

Interns Outdoors

Kent, Ohio is a scenic city. Our offices are close to downtown, near the Cuyahoga river. With so many parks and amenities nearby, we encourage our employees to take full advantage of them. We keep kayaks on site, and welcome our team to take them out, and enjoy them safely. Recently, we took our interns Read More


The REKO-SIK-NxT-SW by ESA is a sidewall burner in a self-recuperative body utilizing ESA’s NxT technology. A “sidewall” (or “flat flame” or “wall hugging”) burner traditionally uses centrifugal force to achieve a flame that stays close to the refractory wall, avoiding impingement on the work product. The REKO-SIK-NxT-SW works a bit differently, instead dividing the Read More


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