Using high-quality materials to create TVA11 trigger valve and replace TVA11 parts Model Is TVA11 N52FN N62FN N79RH N79WW N80SB N88RH N88WW N90PT N90RHN Coil Nailers Repair Parts If the trigger is stuck, the gun is not firing, or there is air leakage, it may be due to a faulty trigger component that needs to be inspected or maintained. Suggest regular maintenance to ensure long-lasting durability