1: The high pressure range is easy to shoot from 5mpa to 15 mpa(About 750psi to 2200psi, NOT Constant Valve. Suits low requirement players.
2: We have different valve stems, 8mm 9mm and 10mm(OD /conect barrel), please choose the right zise when you install it, if you need other size, please contact me.
3: Player suggestions: 4.0mm inner hole - 4.5mm(.177 cal) barrel; 4.5mm inner hole - 5.0mm(.20 cal) and 5.5mm(.22 cal) barrel; 5.5mm inner hole - 6.35mm(.25 cal) and 7.62mm(.30 cal) barrel.
4: We have factory, if you need lots of valve and want to use your logo, please contact us.
