| 摘要 |
The autocharging, self regulating, stepdown pressure, precision pulse discharge gas valve, automatically primes and accurately controls the ballistic pressure delivery of pneumatically precharged, high pressure air pistols and rifles. Movement of a trigger releases valve 3 to cause pressurized air from firing chamber 4 to be released via port 5 to push a projectile along the barrel. On release of pressure from chamber 4 dual diameter piston of a regulator valve moves towards release valve 3 to allow simultaneous charging of chamber 4 from an intermediate chamber and opening of throttle valve 7 to permit air from the high pressure chamber to re-charge the intermediate chamber. When the pressure in chamber 4 reaches a pre-set level piston 6 reverses its movement to close the valves. This process is repeatable as long as the chamber 8 is at a higher pressure than the required firing pressure. The valve comprises component parts which screw together to form the complete valve, allowing ease of disassembly for servicing and replacement of worn or damaged parts. The valve can be adjusted to give a range of ballistic pressures to suit projectile size, range and muzzle velocity requirements. <IMAGE> |
