Our Team


Meet The

Customer Service Team


 Marek Menger

Marek Menger

CEO / President

As founder and president of Petro-Valve, Inc., Marek Menger built the company from its start-up phase to one that achieved $50 million in revenue. He began the company with $20,000 of his own savings and within a year had driven revenues of more than $3 million. The next year, Marek Menger built a 10,000-square-foot warehouse and office facility in Houston. As the oil and gas industry in Texas faced challenges, Mr. Menger continued to grow Petro-Valve's market share. He secured $10 million in revenue by the end of the company's first decade and shortly thereafter moved the organization into a new facility that was 250 percent larger than the first. By Petro-Valve's 20th anniversary, he had established the company as an authorized stocking distributor for several top manufacturers. The company went on to secure many other such relationships and to enter a new 40,000-square-foot facility.

Currently, Marek Menger utilizes his valve industry expertise in a new venture. Menger Valve, Inc., opened in 2017 with its founder's entrepreneurial experience as its driving force. 




Leslie King-Newton

Corporate Directives Manager

Leslie has worked in the valve industry for 27 years, 18 of those years were spent working with Marek Menger at Petro-Valve. She also has additional experience working with Distributors and Manufacturers like Lockwood, AIV, McJunkin and TWC - The Valve Company (Walworth). 




Cathy Donaldson

Customer Service

Cathy Donaldson has 35+ years of experience in the valve industry. Her work experience started with Petro-Valve, then she spent time working with AIV & McJunkin. Her years of experience in wholesale distribution and projects are a great addition to our customer service team. Our company is happy to have Cathy back home again!




Charea Holz

Customer Service

Charea Holz is an industry veteran with 36 years in the valve industry.  Charea spent 11 years working with Marek Menger at Petro-Valve and then spent time working with Ferguson, Lockwood and Newco/Cameron. Charea’s extensive technical valve knowledge adds additional value to the Menger Valve Team!




Wallis Green

Customer Service

Wallis Green joins Menger Valve with over 40 years of experience in the business. Having worked on both the supply side and the manufacturing side, we are excited to have him on our team!



Mike Burkheiser

Technical Authority Expert

Mike Burkheiser joins Menger Valve with over 40 years of experience in the industry. Mike’s field expertise with Rockwell and Flowserve, has solved customer challenges with both Nordstrom Plug Valves and Ball Valves, as a field technician and solutions provider.  

Menger Valve welcomes Mike as the Technical Valve Lead for Lubricated Plug Valves and Ball Valves.




Denese Rancheran

Customer Service

Denese has been with Menger Valve since February 2018. She previously was employeed with Petro-Valve for 5 years.

She attended school at Santa Monica College in California.




Jesse Castañeda

Customer Service

Jesse joined Menger Valve with 14 years in the valve industry working with Marek at Petro-Valve.  

Hablo Español



Justin Pitman 

Justin Pitman

IT Specialist / Digital Marketing

Justin joins the valve industry with 10 years of experience in Information Technology and Digital Marketing. He graduated from The University of Houston with a Bachelors Degree and a Masters Degree in Business Administration and is excited to put his knowledge and experience to use with Menger Valve!



Cathleen Garcia

Sales Support

Menger Valve Welcomes Cathleen Garcia to our Customer Service Team. Having worked at Petro-Valve with Marek Menger, Cathleen's 10 years of experience will be appreciated by customers and vendors!



Staff Motivation Team



Lucas                                                                 Benito



(713) 636-5500


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