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1140 North 129th East Ave.
Tulsa , OK 74116
United States

Residential, Commercial & Industrial

Hubbell Gas Connectors & Accessories, headquartered in Tulsa, Oklahoma with locations California, Wisconsin and Illinois. We engineer and manufacture, with a commitment to providing our customers the highest quality products at the best value.

GasBreaker a part of Hubbell Gas Connectors & Accessories has served the natural gas industry since 1970. In 1974, GasBreaker EFVs became the premier Excess Flow Valves used on gas service lines to protect homes and businesses. Since their introduction millions of GasBreaker EFVs have been sold (More than 5 times as many valves as all US competitors combined) and installed worldwide, providing tens of billions of field service hours. Today the GasBreaker Excess Flow Valve is known as "The EFV of Choice.”

  • Accommodates pressures from 5 psi to 1000 psi (Depending on Series of EFV) 
  • Flow Ranges from 350,000 to 16,000,000 BTU 
  • Meet DOT 192.381 and MSS-SP-115 for excess flow valves for use in natural gas system 
  • Meet ASTM F 1802-97 Performance testing of EFVs 
  • Meet ASTM F 2138-01 Standard Specifications for EFVs 
  • Compatible with fittings and piping materials from most manufacturers
Click here to view our catalog

GasBreaker...manufacturers of Excess Flow Valves.



Performance Charts
Click a UMAC EFV Series from the menu below for pressure, flow, trip and reset characteristics of that series:


SERIES 350viewdownload
SERIES 400viewdownload
SERIES 550viewdownload
SERIES 700viewdownload
SERIES 800viewdownload
SERIES 1100viewdownload
SERIES 1800viewdownload
SERIES 2600viewdownload
SERIES 5500viewdownload
SERIES 10000viewdownload
Propane (LPG)viewdownload


Sizing Chart

To use our online Commercial Application sizing chart, click here.

Click Here for Valve Assembly Guide

Performace Charts

Click Here for Model Guide

Visit our website:
GasBreaker | 1140 North 129th East Ave.  Tulsa , OK 74116 United States | 800x-558x-1373
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