340 Series manual lifting valves offer high reliability in terms of robustness and high air flow rates. Available in lever and button versions, 3/2, 5/2 and 5/3 modes, connecting from 1/8 "to 1/2", they have zamak bodies (1/8" and 1/4 "versions) or Yang alumina (1/2" versions). Secure by locking ring nut and hole in valve body.