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Fits Crosman 1322/77 magnum valve angle port, large volume max dia transfer port
Fits Crosman 1322/77 magnum valve angle port, large volume max dia transfer port
Fits Crosman 1322/77 magnum valve angle port, large volume max dia transfer port
Fits Crosman 1322/77 magnum valve angle port, large volume max dia transfer port

Fits Crosman 1322/77 magnum valve angle port, large volume max dia transfer port

$ 15.31

Availability: 31 in stock
  • Modified Item: No
  • Custom Bundle: No
  • Non-Domestic Product: No
  • Item must be returned within: 30 Days
  • Refund will be given as: Money Back
  • MPN: Does Not Apply
  • Brand: Crosman
  • Return shipping will be paid by: Seller
  • All returns accepted: Returns Accepted
  • Condition: New other (see details)
  • Restocking Fee: No

    Description

    These are new Crosman valves for the 1377 and 1322 models.
    I disassemble them and machine 0.1" from the male thread and I bevel the inside diameter.
    I remove the corresponding female threads from the other half of the valve with a boring bar and I slightly increase the diameter there.
    I then angle the exhaust port to  approx 25 degrees on a milling machine. This allows the air to exhaust from the valve more quickly.
    I enlarge the transfer port from 0.14" to 0.155". This is as large as you can go with the factory transfer port. These are also new Crosman parts.
    This is your best choice if you want to upgrade your power without going to a flat top valve and piston. You can achieve maximum power without needing a flat top valve and piston, just pump a couple more strokes to get max power.
    These changes increase the volume of air that your valve will hold and allow for faster transfer of air from the valve which should help increase power/velocity with additional pump strokes.
    These parts will probably make your gun louder.
    I do not provide installation instructions as there are many excellent videos on line that will explain it better than I could.
    See my other items.