Description: This listing complies with eBay's air gun guidelines found here and I will only sell and ship air guns to buyers in jurisdictions where permitted by applicable laws - http://pages.ebay.com/help/policies/firearms-weapons-knives.html THESE SCREWS ONLY FIT DISCOVERY MODELS. We have other custom valve screws listed that fit 22XX, Maximus, Fortitude, Marauder Pistol, 1720T and 1701P. They are direct-fit for Discovery models with no modifications needed unless you are using one of our custom rifle groups or casings made of aluminum or brass or a pistol trigger frame, then you will need to file the bottom valve-screw shorter for the trigger group to mount over it, or you can leave an original factory screw in that position if using 2600 PSI or less. These screws are designed by Magnum Airpower and custom manufactured, they are not available from any other source. They safely raise the operating pressure to 3000 PSI. They are 410 stainless steel heat treated to meet metric class 12.9 with a specified hardness of HRc 39-43. The approximate tensile strength is 185,000 PSI. The head diameter is .3155", the head height is .0975" and the thread size is 8-32 x 3/16". The second photo shows just one of these screws holding a Discovery valve with 3300 PSI in the tube. The pressure on the gauge is clearly visible in the photo. This is the strongest screw set that exists for Discovery models. DO NOT PRESSURIZE A TUBE WITH ONLY ONE SCREW AS SHOWN IN THE PHOTOS, A LETHAL ACCIDENT COULD OCCUR. THAT DEMONSTRATION WAS DONE IN A CONTROLLED ENVIRONMENT WITH PREPARATIONS THAT MADE IT SAFE. ALL THREE SCREWS MUST BE USED TO HANDLE THIS PRESSURE SAFELY. These screws can handle much higher pressure than the fill adapter can, the safe pressure limit is based on what the fill adapter can handle with a minimum 3:1 safety ratio which is 3000 PSI. These screws fit a T25 driver, one 1" T25 hex bit is included. They are designed to fit the threaded holes very snug when fully-installed. The last 1/64 of an inch requires a little extra force to get the screw head snug against the valve. Do not over-tighten, they should be hand-tight flush against the valve-body with no gap between the head and valve but no more torque than that is needed, be careful not to strip-out the threads in the valve, they are sometimes partially stripped from the factory to begin with. Message if you have any questions, making modifications to your airgun can be dangerous if not done correctly. Empty all air or CO2 pressure from your gun before installing these screws or a fatal injury could occur. Except for the original valve screws, the Discovery PCP tube assembly is as strong as the ones on similar Crosman/Benjamin 3000 PSI models like the Marauder Pistol and 1701P. All are made with the same passivated 1020 DOM steel tubing. All of the other pressure-containing components are as strong, the stainless steel Discovery fill adapter is actually stronger than the aluminum one original to the PCP pistols. It's safe to use more pressure in the Discovery when the valve-screws are correctly upgraded. We have destructively tested this screw design beyond the claims confirmed in the photos.
Price: 13.7 USD
Location: West Hatfield, Massachusetts
End Time: 2023-12-07T06:07:10.000Z
Shipping Cost: 10.2 USD
Product Images
Item Specifics
Restocking Fee: No
Return shipping will be paid by: Buyer
All returns accepted: Returns Accepted
Item must be returned within: 14 Days
Refund will be given as: Money Back
Modified Item: No
Country/Region of Manufacture: United States
Custom Bundle: No
MPN: Does Not Apply
Brand: MAGNUM AIRPOWER LLC
