About TMCo

Our Founder

H. Wayne Carroll, 1935-2017

We are profoundly saddened by the passing on May 7, 2017 of our founder, Chairman and CEO, H. Wayne Carroll.

Wayne was a husband, father, grandfather, mentor, friend, visionary and servant of Christ. Wayne was a man with a great entrepreneurial spirit, an easy smile and laugh and an ability to relate to people of all walks of life. He saw opportunity where others perceived obstacles. He embraced challenge where others might retreat in fear. He would not accept defeat and would praise God for all.

An oil and gas industry veteran with 40+ years of management experience, Wayne learned the industry from the ground up beginning with his 20+ year stint with Daniel Industries where he held a number of management positions. Wayne brought that experience and insight to multiple entrepreneurial ventures, including serving as co-founder and Vice President of Flow Automation, founder and President of Premier Instruments, Inc. and culminating in his founding and serving as Chairman, President and CEO of TMCo, Inc.

Wayne was a leader.  He built TMCo around three core building blocks, Great Products, Great People and Great Service. He surrounded himself with a strong management team, put in place a durable plan to carry on his vision and leaves TMCo a market leader, financially strong and well equipped to continue to provide our customers with industry leading products and unparalleled support. In Wayne’s honor we, the TMCo team, will continue to execute the plan to carry on Wayne’s vision, and we will give all praise and glory to God, our Father.

TMCo Inc.


TMCo Operating, LLC is a Delaware Limited Liability Company specializing in the manufacture of orifice fittings for the measurement of natural gas. The company was founded in September 2003 and has manufacturing facilities in Wewoka, Oklahoma; and sales and administrative offices in Houston, Texas. TMCo has a world wide network of sales representatives. TMCo is ISO 2001 certified and our products are CRN approved and conform to all applicable industry standards.


Our current product line consists of the SURE SHOT® Dual Chamber orifice fitting in 2”, 3”, 4”, 6”, 8”, 10”, 12”, 16” sizes and SURE SHOT® Single Chamber orifice fitting in 2”, 3”, 4” and 6” sizes and are available in 150, 300 and 600 ANSI ratings. Compared to other orifice fittings on the market, the “Sure-Shot” is simpler, safer and more economical to operate. The SURE SHOT® orifice fitting design meets or exceeds the guideline specifications, under the AGA3/API 14.3 & ISO 5167 standards for manufacturing custody transfer differential products for both the domestic and international market.

Our facility in Wewoka, Oklahoma, has grown to over 75,000 sq. ft. This facility houses all necessary machinery and equipment to support manufacturing of the Sure Shot Dual and Single chamber orifice fitting products. With our skilled work force in Oklahoma we manage all product assembly, testing and quality control functions, as well as warehousing and inventory control.

TMCo Operating, LLC has over 100,000 Sure Shot Dual and Single Chamber Orifice Fittings installed worldwide!


Thank you for your interest in employment with TMCo Operating, LLC Employees in every position are empowered and encouraged to tap into their creativity and entrepreneurial spirit to strengthen our company. Their ideas, ingenuity and work ethic fuel our success. If you join our team we are confident that you will find TMCo Operating, LLC a dynamic and rewarding place in which to work. We consider the employees of TMCo to be our most valuable resource.

Job opportunities for applicants who are skilled in production, fabrication and sales can be found in three locations with TMCo Operating, LLC. If you are interested in one of our job openings, please submit resume and completed job application one of three ways:

  1. Email [email protected]
  2. Fax (405) 257-9374
  3. or Mail to:

TMCo Operating, LLC
Attn: Human Resources
108 W. Cedar St.
P.O. Box 1517
Wewoka, OK 74884

Please Note: Due to the large number of applications we receive, we regret that we are not able to personally respond to all applicants. If you are selected for an interview, we will contact you as soon as possible.

TMCo, Inc. participates in E-Verify and is an equal opportunity employer.

Download the TMCo Application for Employment