Editorial Review TeeJet 4688 GunJet Trigger ValveTop quality hand valves for use with spray nozzles, extensions and handles to suit your application needs. The "typical hand valve assembly" includes: 4727 handle, 4688 valve, 4673-8 curved extension with swivel body, TeeJet cap and a flat spray tip. With trigger lock. Maximum flow rate of 2 gpm (7.6 l/min). Maximum operating pressure of 250 psi (17 bar). 1/4" NPT (F) inlet connection and a 11/16"-16 (M) outlet connection. Use with TeeJet and ConeJet tips, adjustable ConeJets or MulteeJet tips. Constructed of brass.