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Jeremias® Venting Accessories

Barometric Exhaust DampersMotorized Exhaust DampersImplosion Relief ValvesPressure Relief ValveCondensing Boiler Exhaust Dampers

Barometric Exhaust Dampers

Exhaust Dampers

For More Information:
Manufacturer's Site
Jeremias-Type-M-oil-Accessory

TYPE MG-1

Gas

A double-acting control for gas-fired furnaces and boilers is widely used for conversion burner installations, gas draft-induced appliance operation with mechanical draft inducers, or sidewall power venters. lt is also recommended for use on gas atmospheric appliances where a draft hood cannot be installed, and can improve combustion stability and draft on many gas atmospheric installations with venting problems.

The MG-1 provides precise, accurate control of drafts at levels higher than permitted by a standard draft diverter, which is a frequent requirement with gas. Because it is double-acting, it opens out to relieve positive vent system pressures as low as .01″. Draft adjustments using weights are simple and accurate from .01” to .1”.

TYPE MG-2

Solid, Oil, Or Gas Commercial/Industrial

This is a series of compact, rugged, heavy-duty controls for use on large residential, commercial, and industrial applications. The Field Type M+MG2 Draft Control provides precise draft regulations for solid fuels, oil, gas, or oil/gas applications requiring only the simplest, on-the-job adjustments depending on which fuel is to be utilized. In a gas installation, the double-acting Type M+MG2 is specified instead of a draft hood to give the appliance the assistance of the chimney. In a duel fuel oil/gas or a gas-fired only application, use the M-MG2 as a double-acting draft control with the optimal Field Thermal Switch accessory.

Use the M+MG2 as a single-acting draft control for oil or solid fuel applications. For any installation with 10″ or larger diameter smoke pipe, specify Jeremias’ standard M+MG2 Draft Control, the unit that can be adapted to any fuel. The moving part (gate) rests on a long, thin, stainless steel knife edge which, in turn, is supported by self-aligning and self-cleaning bearings. When the heavy gauge gate moves, only the knife edge rests on the bearing for minimum friction and maximum sensitivity to draft changes.

Motorized Exhaust Dampers

Exhaust Dampers

For More Information:
Manufacturer's Site
Jeremias-MED-GA

MED-GA

Motor actuated gas vent damper for overpressure applications with wet exhaust conditions (Category IV Appliances).
Reduction of cycle venting losses through boilers and draft hoods.

  • All-stainless steel construction.
  • Heavy duty design.
  • Disc is metallic tight to outer casing.
  • Overload protected motor.
  • Automatic stop.

Purpose:

The damper rod is externally turned by an actuator. The rod is connected to a damper blade that rotates to restrict exhaust flow.

Construction:

All stainless steel construction.
0.03” – 0.06” thick ASTM 316L stainless steel housing.
0.06” thick (14 gauge) ASTM 316L stainless steel blade and stiffener.
0.06” thick (14 gauge) ASTM 316L blade stop (no seal, metal to metal).

Connection / Installation Details:

Connection System: KL coupler system.
Positioning: horizontally or vertically – shaft must remain horizontal.
Also available for appliances with pilot flame.

Classifications:

Temperature: Max. 392°F
Pressure: 0.85” WC
Classifications: ANSI Z21.66-2015, CSA6.14-2015, Class-C330503; Class-C330583

 

MED-HP

Motorized exhaust damper for High Pressure.

  • All-stainless steel construction.
  • Heavy duty design

Purpose:

The damper rod is externally turned by an actuator. The rod is connected to a damper blade that rotates to restrict exhaust flow.

Construction:

All stainless steel construction.
0.08” thick (14 gauge) ASTM 316L stainless steel housing.
0.08” thick (14 gauge) ASTM 316L stainless steel blade and stiffener.
0.08” thick (14 gauge) ASTM 316L blade stop (no seal, metal to metal).
0.87” thick Ø shaft with 0.63” square actuator connection.
Mounting plate is a perfect match for Belimo GMX120-3
Actuator (not included).
Two (2) gas tight up to 5000 Pa (20” WC) graphite packing gaskets.

Connection / Installation Details:

Connection System: 1.5” wide flange1.
Positioning: horizontally or vertically – shaft must remain horizontal.
1Standard System (any connecting means are possible, examples: KL, 0.5” rolled flange, etc.)

Classifications:

Temperature class: T400 ” 400°C (752°F)
Pressure class: H1 5000 Pa (20” WC)
Condensate durability: W dry/wet

Implosion Relief Valves

Relief Valves

For More Information:
Manufacturer's Site
Jeremias-Implosion-Relief-Valves

Relief of negative pressure operation in order to assure no flue gases can escape during standard operation.

Implosion relief valve venting accessories are for use in engine exhaust, heating appliances, and other fuel fired equipment.

During normal operation the spring keeps the cover plate closed, if the combustion air damper is closed at the burner due to a blackout, the chimney cannot draw in air through the boiler. The “missing” air now returns through the implosion damper. This prevents the so-called Joukowsky shock by immediately opening the cover plate. Example, if the flue gases are cut off from the chimney during a sudden appliance shutdown, the negative pressure in the chimney may contract (warp) the connecting breeching.

Connection: Flange or factory welded onto a fitting. May be installed vertically or horizontally.

Pressure Relief Valves

Relief Valves

For More Information:
Manufacturer's Site
Jeremias-Pressure-Relief-Valves

When combustion engines or special gas engines are operating, it is possible that the incompletely combusted fuel mixture gets into the exhaust gas line.

Possible causes: Not tight closing exhaust valves, an incorrect air / fuel ratio, insufficient fuel supply, an incorrect ignition timing or a too rich fuel mixture.

If the unburned fuel mixture ignites because of  the glowing hot catalyst, then this would lead to an explosion in the exhaust system. Therefore, the installation of a pressure relief valve (explosion damper) is recommended, especially for large systems. The PRV allows the explosion pressure resulting from the explosion to escape automatically from the system in seconds, thus preventing damage to the exhaust gas line.

Jeremias pressure relief dampers are made of high-quality 316L stainless steel and can be used up to an exhaust gas temperature of 1112 °F (600 °C). Thanks to the variably adjustable opening pressure, the PRV can be adjusted according to the requirement of respective system.

Condensing Boiler Exhaust Dampers

Relief Valves

For More Information:
Manufacturer's Site
Jeremias-VBD-Damper

The VBD Vent Damper System consists of a single blade damper. It can be used as an on/off damper to prevent airflow though the appliance in an off cycle as well as to maintain a constant negative or positive pressure in the vent exhaust connector.

Construction:

20 Gauge 316L stainless steel housing and blade
½” graphite sealed bearings
Viton seal on damper blade

Connection / Installation Details:

½” flanged connections
Positioning: horizontally or vertically – shaft must remain horizontal

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                      Jim Lubratt

                      President & Chief Executive Officer

                      Jim Lubratt has been president of SVL since 2006. He first joined the company as a sales engineer in 1992 and was made a partner in 2000. He holds a Bachelor of Science in mechanical engineering from Southern Methodist University and first entered the HVAC industry as a marketing engineer for a heat pump manufacturer in Texas.

                      In addition to his role at SVL, Jim is vice president of AQC Industries, LLC, a manufacturer of specialized underground ductwork systems. He is also an investor and board member for Hydromx, Inc., a manufacturer of heat transfer nanofluids, and Crotega, Inc., creators of personal and building security solutions.

                      Jim and his wife, Tracy, met in college and married in 1993. They have three children, two of whom have graduated college in Texas, while their youngest is attending Grand Canyon University in Arizona.

                      Outside of work, Jim places a priority on his faith, family, friends, and fitness. He enjoys helping people-supporting charities, time with his wife and kids, road-biking with friends and efforts to stay physically fit.

                      A message from Jim on the achievements of SVL

                      SVL started in February 1967 by Charlie Schwab and Craig Vollhaber. Schwab-Vollhaber, Inc. (as it was named at the time) steadily grew and, in 1985, welcomed Paul Lubratt as another partner, becoming Schwab-Vollhaber-Lubratt, Inc. SVL’s founders had the determination to build the most talented, customer-focused HVAC representative in the Midwest. Our original drive and passion still shape the company and culture to this day. The achievements of an organization are the results of the combined efforts of every individual. From humble beginnings, SVL founders paved the way to industry success with hard work and determination. “Today, SVL is strongly organized with great people to lead our industry forward as we are challenged with fast-paced changes to reduce our environmental impact,” says Jim. Now, 55+ years later, SVL is under the leadership of two new principals who share the same vision and drive that has propelled SVL throughout the years. Built on a foundation of integrity, Jim Lubratt, and Charlie Vollhaber strive to ensure opportunities for personal growth, improved work environment, and shared life enrichment. The achievements of our organization are the results of the combined efforts of every individual.

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                      Charlie Vollhaber

                      Executive Vice President & Officer

                      Charlie Vollhaber is a third-generation employee at SVL, as a grandson of company co-founder Craig Vollhaber and son of former CEO Todd Vollhaber. Charlie holds a Bachelor of Science in mechanical engineering and an MBA, both from the University of Minnesota. He became an outside salesman for SVL in 2013, was made a partner in 2019, and then executive vice president and officer in 2022.

                      He grew up playing sports, including football, basketball, golf, and track, and enjoys the competitive nature of the HVAC industry. “I like that no two days are ever the same as there are always questions to answer and problems to solve,” he says. “Most of all, I enjoy working with great people and coordinating together on challenging projects to achieve positive results together.”

                      Outside of work, Charlie enjoys spending time with his wife, Lesley, and their three boys. He’s also fond of golfing, traveling, and attending concerts and sporting events. One of his favorite quotes is from the book of Philippians: “Do nothing from selfish ambition or conceit, but in humility count other more significant than yourselves. Let each of you look not only to his own interests, but also to the interests of others.” Because HVAC and construction is such a team effort, he says, “this mindset helps to create positive results in a vast majority of situations.”

                      A message from Charlie on the culture of SVL

                      “At SVL, we strive to cultivate a unique culture that revolves around finding and empowering exceptional individuals. We believe in equipping our team members with the right tools and resources to succeed.

                      As we’ve grown the business, we have deliberately maintained a small firm culture, fostering an environment where collaboration thrives. We encourage open dialogue and promote a sense of comfort among our employees, allowing anyone to ask questions and seek guidance from anyone else, regardless of their level within the organization.

                      We foster a workshop-like atmosphere where everyone’s contribution is valued. Presenting your work to another individual or a group of teammates provides a platform for collaboration, where ideas are shared, dissected, and improved collectively. We firmly believe in the power of mentoring and provide various avenues for both formal and informal guidance. Whether it’s through structured training programs or casual conversations, we encourage team members to discuss a wide range of topics, from work-related successes or issues to everyday personal life topics.

                      In summary, our culture is built on the foundation of attracting exceptional individuals, empowering them with the necessary tools, and fostering a collaborative environment where mentorship and growth thrive. We are committed to creating an atmosphere where every team member feels supported, valued, and encouraged to reach their fullest potential.”

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                      Al Gramse

                      Vice President of SVL Service Corporation

                      Al Gramse has been in the HVAC industry for over 30 years. He began as a service technician.  Then over his career worked in technical support, building automation, then service manager prior to his current role.

                      How did Al end up in the HVAC industry?  “After high school, I took a couple years to figure out what I wanted to do.   Where I was working at the time, a grumpy old coworker, who I didn’t get along with, walked up to me and said ‘What are you doing here?  Go back to school.’”  I said, “For what?”  He said “There’s a tech school down the street.  Go down there and pick something that interests you”. Then he walked away.  That weird interaction, with someone I didn’t get along with, sent me down a 30-year path in the HVAC industry.   Never underestimate the potential of a little encouragement.   Even if it is from a strange source.

                      Al has been with SVL for 15 years and is the head of our SVL Service division. “The people here are some of the best in the industry,” Al says. “A bunch of team-oriented, knowledgeable, go-getters.” His personal mantra is “figure it out,” “Do a little fact-finding on your own. Use your own brain before you use someone else’s. But know when to ask for help.” he prescribes. “It’s amazing what you can accomplish on your own if you dig in a little bit.”

                      Outside of work, Al has lots of outdoor hobbies, including hunting, fishing, and motorcycling, though his favorite pastime is simply hanging out with family.

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                      Jennifer Roach

                      Director of Marketing, Events & Administration

                      More than just a creative director, Jen brings 30 years of marketing and leadership magic to SVL. Her journey began in the trenches of graphic design, quickly evolving into crafting eye-catching campaigns for iconic brands like Target, Gabberts, Gander Mountain and Camping World. As a seasoned director and agency veteran, she honed her skills with recreational vehicle giant Parts Unlimited before leading creative teams at HOM Furniture and, ultimately, landing at SVL during a crucial growth phase.

                      Jen thrives on "servant-leadership," empowering her team and fostering a culture of trust and mutual respect. "It unlocks their potential, fuels creativity, and leads to work we're all proud of," she says. "I want my team to care, collaborate, and push boundaries together."

                      When not shaping impactful campaigns, Jen enjoys weekend adventures with her husband, Scott, and son, Crew. Their lives are a tapestry of shared passions, from bike rides and baking experiments to cheering on Simley High School wrestlers. And with her recently built forever home in Cottage Grove, her free time now includes a new, thrilling chapter: weekend renovation warrior!

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                      Mike Ruff

                      Vice President of Information Technology

                      Mike Ruff, the Vice President of Information Technology at SVL Inc., is a seasoned professional with an impressive 24-year tenure in the IT industry. His journey in the field is marked by extensive experience and expertise in various domains, including serving as a Cloud Architect focusing on Azure Software as a Service (SaaS), Infrastructure as a Service (IaaS), and both B2B and B2C solutions. Mike’s skills extend to being a Security Architect, where he has honed his knowledge in safeguarding digital assets, and he is also proficient in the Microsoft 365 stack, virtualization, routing, switching, and wireless technologies.

                      Beyond his professional roles, Mike is deeply passionate about technology in all its forms, which is evident in his career and personal hobbies. His love for technology is not just limited to his work but also spills over into his leisure activities. In the summertime, Mike enjoys the thrill of riding his motorcycle, embracing the freedom and adventure it brings. When winter arrives, he switches gears to snowboarding, seeking the excitement and challenge of the snowy slopes. These hobbies reflect Mike’s dynamic personality and continuous pursuit of technically engaging and physically exhilarating activities.

                      Mike Ruff's blend of professional expertise and personal passions make him a unique and valuable asset to SVL Inc., embodying a perfect synergy of technical acumen and a zest for life's adventurous aspects.

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