4040007 Genuine Bromic Adjustable Gas Cock with 1.27mm Screw-In Injector and Nut, Gas Appliance Control Valve

4040007 is a genuine Bromic gas cock, an adjustable valve that comes with a 1.27mm screw-in injector and its nut. The gas cock controls flow to the burner, and the injector measures the gas through a precise 1.27mm orifice so the flame burns correctly. Our records don't list the Bromic models it suits, so match the part number and injector size with your old part before you buy.

Gas cock and injector problems to look out for

The gas cock opens and closes the gas supply to a burner and lets the flame be set, while the injector at its outlet controls how much gas enters the burner. A stiff, sticking or loose valve makes the flame hard to control or shut off, and a worn spindle seal can leak. A partly blocked or damaged injector gives a small, lazy, yellow or lifting flame, slow heating, or a burner that struggles to stay alight. Injector size is matched to the gas type and burner, so the 1.27mm size matters.

Part details

• Genuine Bromic part number 4040007
• Adjustable gas cock
• 1.27mm screw-in injector
• Nut included
• Must be installed by a licensed gas fitter

Who should fit it

Any work on a gas valve or injector must be done by a licensed gas fitter. They'll isolate the gas, fit the cock and injector with the supplied nut, confirm the injector size suits the gas type the appliance runs on, then leak test and check the flame before handing it back. Never fit a different injector size to make a burner run hotter.

Questions about this part

Does the 1.27mm injector suit natural gas or LPG?

Our records give the injector size, 1.27mm, but not the gas type it's set up for. Your gas fitter should check the appliance's data plate and the specified injector size for your gas type before installing it.