GAS PRESSURE REGULATOR FOR A PAINTBALL GUN HAVING ADDITIONAL OVERPRESSURE VENT VALVE

摘要

A pressure regulator for dispensing gas from a high pressure supply at a predetermined reduced pressure. The regulator comprises a housing (1A, 1B) having an outlet (5) for said reduced pressure, an inlet (4) for connection to the high pressure supply and a valve (7) and valve seat (8). Springs (6, 13) apply forces to the valve (7) so that in use the valve (7) is balanced at an equilibrium position to pass gas at the predetermined reduced pressure to said outlet (5). A venting orifice (16) downstream of the valve (7) dissipates excessive outlet pressure above the predetermined reduced pressure. The operation of the venting orifice (16) is dependent upon the position of a piston (10). Orifice (21) in housing (1B) is used to recharge the high pressure supply and may include a one way valve. Main valve seat may be made of Polytrichlorofluoroethylene (Kel-f).