An Excess Flow Valve (EFV) is a mechanical safety device installed inside the outlet of a tapping tee or installed inside a short stick of pipe fused to the outlet of a tapping tee, attached to the gas service line.
GasLOK™ is an excess flow valve – bypass (EFVB) type of excess flow valve that allows a small amount of gas to bypass the valve after it has closed.
GasLOK™ EFV is a self-contained, tamper resistant cartridge, installed on a tapping tee, that does not require additional parts to function and will automatically reset after gas pressure is equalized. GasLOK™ reduces liability and creates a safer environment for the customer and service provider by slowing the release of gas during a line rupture. The EPA Natural Gas Star Program recommends the installation of excess flow valves to reduce methane emissions.
Stick Tapping Tee
Tapping Tee Outlet
Available Series Available Fabricated Options
PE4710 or PE2708
½ CTS, ½ IPS Tapping Tee
½ CTS, ½ IPS Stick
PE4710 or PE2708
½ CTS, ½ IPS Tapping Tee
½ CTS, ½ IPS Stick
PE4710 or PE2708
1 CTS, 1 ¼ CTS, ¾ IPS, 1 IPS, 1 ¼ IPS, 2 IPS Tapping Tee
1 CTS, 1 ¼ CTS, ¾ IPS, 1 IPS, 1 ¼ IPS, 2 IPS Stick
¾ IPS Inserted in Tapping Tee Outlet
¾ IPS Inserted in Tapping Tee Outlet with Electrofusion Reducer ½ CTS or ½ IPS
¾ IPS Steel Service Tee Transition Fitting
Note: Only ¾ IPS tapping tees are available with EFVs inserted into the outlets.
PE4710 or PE2708
½ CTS, ½ IPS Tapping Tee
½ CTS, ½ IPS Stick
PE4710 or PE2708
1 CTS, 1 ¼ CTS, ¾ IPS, 1 IPS, 1 ¼ IPS, 2 IPS Tapping Tee
1 CTS, 1 ¼ CTS, ¾ IPS, 1 IPS, 1 ¼ IPS, 2 IPS Stick
¾ IPS Inserted in Tapping Tee Outlet
¾ IPS Inserted in Tapping Tee Outlet with Electrofusion Reducer ½ CTS or ½ IPS
¾ IPS Steel Service Tee Transition Fitting
Note: Only ¾ IPS tapping tees are available with EFVs inserted into the outlets.
PE4710 or PE2708
1 CTS, 1 ¼ CTS, ¾ IPS, 1 IPS, 1 ¼ IPS, 2 IPS Tapping Tee
1 CTS, 1 ¼ CTS, ¾ IPS, 1 IPS, 1 ¼ IPS, 2 IPS Stick
¾ IPS Inserted in Tapping Tee Outlet
¾ IPS Inserted in Tapping Tee Outlet with Electrofusion Reducer ½ CTS or ½ IPS
¾ IPS Steel Service Tee Transition Fitting
Note: Only ¾ IPS tapping tees are available with EFVs inserted into the outlets.
PE4710 or PE2708
1 CTS, 1 ¼ CTS, ¾ IPS, 1 IPS, 1 ¼ IPS, 2 IPS Tapping Tee
1 CTS, 1 ¼ CTS, ¾ IPS, 1 IPS, 1 ¼ IPS, 2 IPS Stick
¾ IPS Inserted in Tapping Tee Outlet
¾ IPS Inserted in Tapping Tee Outlet with Electrofusion Reducer ½ CTS or ½ IPS
¾ IPS Steel Service Tee Transition Fitting
Note: Only ¾ IPS tapping tees are available with EFVs inserted into the outlets.
