GasLOK Excess Flow Valve from GF Central Plastics brings peace of mind
The new GasLOK Excess Flow Valve from GF Central Plastics is designed to limit the flow in the event of a line rupture, resetting automatically when the service line is repaired and the pressure is equalized. [Source: GF Piping Systems]
Robust safety device limits flow when needed, resets automatically
Shawnee, Okla.-GF Central Plastics, the leader in transport solutions for the natural gas industry, has introduced GasLOKTM, a robust and reliable excess flow valve for natural gas service lines. This important safety device creates a safer environment for both customer and service provider, allowing key repairs to take place without unnecessary risk.
In the rare case that a natural gas service line experiences a rupture, the flow of gas to residential or commercial customers may build up behind the damaged area, posing a safety hazard. GasLOKTM, a mechanical excess flow valve, provides peace of mind in such an event by limiting flow in response to abnormal pressures.
Available in three fabricated options (stick version, cartridge installed inside the outlet of a tapping tee, or a stick fused to a tapping tee outlet), the GasLOKTM EFV contains a spring and a plunger. Under normal conditions, the spring holds the plunger in the open position, allowing gas to flow. But if service line pressure drops suddenly, the change will cause the spring to collapse and the plunger will significantly reduce the flow of gas. GasLOKTM is the bypass type of excess flow valve (EFVB), meaning that it permits a small amount of gas to pass through in its closed position. Once gas pressures are equalized across the valve, the spring will automatically reset, returning the plunger to the open position.
The GasLOKTM EFV is a self-contained, tamper resistant cartridge that is easy to install on either new or replaced gas service lines, without any need for additional parts or tools. The product is robust and long-lasting, with an expected operational lifespan of 50 years. GasLOKTM has met or exceeded the requirements of D.O.T.192.381, MSS SP-115 and ASTM F1802.
GasLOKTM is manufactured in numerous series to accommodate a wide range of service pressures. To aid in selection, GF provides an online service line protection calculator and, as an industry first, the GasLOKTM Series comparison tool. By providing system parameters, users can easily determine the appropriate GasLOKTM series to use. GF’s extensive manufacturing capabilities ensure that GasLOKTM EFVs can be delivered to meet project schedules.
For more information on both GasLOKTM and the online calculator, please visit gfps.com/gaslok or contact GF Central Plastics at 1-800 654-3872 or at [email protected].
About GF Piping Systems
As the leading flow solutions provider for the safe and sustainable transport of fluids, GF Piping Systems creates connections for life. The division focuses on industry-leading leak-free piping solutions for numerous demanding end-market segments. Its strong focus on customer-centricity and innovation is reflected by its global sales, service, and manufacturing footprint and its award-winning portfolio, including fittings, valves, pipes, automation, fabrication, and jointing technologies.
GF Piping Systems has its own sales companies in 31 countries, which means it is always by its customers’ side. Production sites in 36 locations in America, Europe, and Asia ensure sufficient availability and quick, reliable delivery. In 2022, GF Piping Systems generated sales of CHF 2’160 million and employed 8’085 people. GF Piping Systems is a division of Georg Fischer AG, founded in 1802 and headquartered in Schaffhausen, Switzerland.
