How to Rebuild a Fire Nozzle Ball Shutoff Valve | Fix Leaks & Replace Valve Seats (TFT Service)

Is your fire nozzle ball valve leaking through the waterway or around the handle? In this service guide, Doug Heller from the Task Force Tips service team demonstrates how to diagnose and repair common issues with TFT stainless steel ball shutoff valves. This includes replacing the rear valve seat, performing a full rebuild, and adding or removing a pistol grip. The procedures shown in this video apply to several TFT valve models, including: • F140 / J140 series • F100 series • D75 series While the valve sizes differ, the service procedure is the same across these models. This video covers both quick field fixes and complete rebuild procedures so firefighters and maintenance personnel can restore proper shutoff performance. Common issues this video helps resolve: • Water leaking through the valve even when closed • Water leaking from the handle trunnion area • Worn or damaged valve seats • Coupling leaks caused by worn O-rings • Rebuilding the valve after long-term service One unique feature of these TFT valves is the quick-change rear valve seat, which can often solve leakage issues without a full rebuild. In many cases, replacing the rear seat and hose gasket restores proper shutoff. Repair Kits for This Valve You can find the correct rebuild kits for your valve here: F140 / J140 Valve Kits https://tft.com/product-category/tool... F100 Valve Kits https://tft.com/shop/?_sf_s=F100 D75 Valve Kits https://tft.com/shop/?_sf_s=d75 These kits may include components such as: • Replacement valve seats • O-rings and sealing components • Handle repair components • Roll pins • Repair mandrel and drill bit (handle repair kits) What You’ll Learn in This Video • How to diagnose leaking ball shutoff valves • How to replace the quick-change rear valve seat • When a full valve rebuild is required • How to remove the coupling and ball assembly • How to clean and inspect the stainless steel ball • How to reinstall trunnions and align the ball • How to drill the handle and install roll pins • How to reinstall the coupling and ball bearing race • How to add or remove a pistol grip on the valve After completing any service work, the valve should always be flow tested and pressure tested before returning to service. Tools Referenced • 1/8" Allen wrench • Two 5/16" Allen wrenches • Flat punch • Ball peen hammer • No. 22 drill bit • Repair mandrel (included in handle repair kits) • Molykote 112 silicone grease • Red and blue Loctite Need Help? If you have questions after servicing your nozzle valve, the TFT service team can help. Email: [email protected] Phone: (800) 348-2686 Chapters 0:00 Introduction – Ball Shutoff Valve Service 0:03 Who This Video Is For 0:11 Applies to F140, J140, F100 and D75 Valves 0:28 Buy Your Kit at TFT.com 2:19 Tools You'll Need 3:34 Disengaging Handle From Ball Valve 5:58 Removing Handle From Valve 7:53 Cleaning Inside Valve Body 10:34 Reattaching Handle to Valve 15:11 Engaging Handle With Valve 18:36 Installing Coupling Back on Valve 20:12 Installing Ball Bearings 20:25 Installing Set Screw 21:21 Installing Rear Valve Seat 21:42 Installing Hose Gasket 21:54 Valve Ready for Testing 22:00 Adding or Removing a Pistol Grip