This cap fits the barrels with a 4-inch neck and has an S30 valve for use with the Hambleton bard S30 cylinders. Does not have a pin and cannot be used with the 8g CO2 bulbs. It comes fitted with all seals, including pressure release. It is recommended that you put a little vaseline on the cap's threads, before screwing onto the barrel, to help achieve a gas-tight seal.
Write a review and let shoppers know what you think of this product.